Search

PurposeWe determined over-the-counter magnifier usage rates by patients who newly presented for vision rehabilitation services, and sought to elucidate whether patients' ratings of over-the-counter magnifiers were associated with vision rehabilitation management strategies.MethodsRetrospective records reviews of 274 new vision rehabilitation patients seen between 2021-2023 were completed by three optometric providers at an ophthalmic academic center, college of optometry, and private practice.ResultsOver half (58%) of patients tried an over-the-counter magnifier. Older age was significantly associated with trying over-the-counter magnifiers (OR:1.04; p

PurposeAn evidence basis is lacking but needed to compare reading ability outcomes after magnification device training remotely via telerehabilitation versus in office.MethodsA multicenter randomized controlled trial at academic centers and vision rehabilitation private practices randomized 61 visually impaired adults to telerehabilitation or in-office training 1 to 4 months after dispensing new portable electronic, hand-held, or stand optical magnifiers. Telerehabilitation included loaner equipment for Zoom videoconferencing with remote control access software. Using a multilevel regression model, changes in Activity Inventory responses using Rasch analysis estimated reading ability in dimensionless log odds units (logits) (0.14-logit change corresponds with ability change expected from a one-line change in visual acuity).ResultsAcross 47 participants who completed the trial, reading ability with new magnifiers improved significantly by 0.61 logits on average (95% confidence interval [CI], 0.36-0.86; P < 0.001) from baseline to 1 month, and by an additional 0.44 logits on average (95% CI, 0.19-0.69; P < 0.001) from 1 to 4months (i.e., after magnifier training), with very similar significant findings for both telerehabilitation (n = 29; mean improvement = 0.44 logits; 95% CI, 0.08-0.80; P = 0.018) and in-office training (n = 18; mean improvement = 0.43 logits; 95% CI, 0.15-0.71; P = .003), and no significant difference between randomized groups across both follow-ups (95% CI, -0.43 to 0.61; P = .73). Vision, demographics, and health factors were nonsignificantly related to reading ability changes from 1 to 4 months.ConclusionsReading ability improved after the provision of newly dispensed magnifiers, with further improvements following additional magnifier training via either telerehabilitation or in-office usual care.Translational relevanceThese findings provide support for the use of telerehabilitation to enhance reading ability with newly prescribed magnifiers as an alternative modality of care delivery.

This prospective, single-centre cohort study aimed to evaluate the impact of a portable vision reading device, OrCam Read, on vision-related quality-of-life and independent functional status in patients with low vision due to stroke or brain tumours. Six patients with poor visual acuity or visual field defects due to a stroke or a brain tumour were enrolled at a U.S. Ophthalmology Department. Participants were trained to use OrCam Read and given a loaner device for the 1 month duration of the study. Various assessments, including daily function tests, the National Eye Institute Visual Function Questionnaire-25, and the 10-item neuro-ophthalmic supplement, were administered at the first and last visits. Patients experience with the device was evaluated with weekly telephone and end-of-study satisfaction surveys. The main outcome measures were the patient satisfaction with OrCam and the mean assessment scores between enrolment and final visits. The intervention with OrCam significantly improved patients ability to complete daily tasks and participants reported good satisfaction with the device. The results also show non-significant improvement with distant activities, dependency, and role difficulties. Our findings demonstrate the feasibility of studying vision-related quality-of-life using a portable vision device in this patient population and pave the way for a larger study to validate the results of this study.

Clinical relevance: Reading performance is important for evaluating near vision and predicting and prescribing near-vision correction. There is a significant gap in the literature on Arabic reading performance and its associated effects. Background: Normative data from control participants serve as the baseline for future studies involving groups with specific characteristics. This study aimed to assess baseline measures of Arabic reading performance. Methods: In total, 428 normally sighted adults aged 19–83 years read the Balsam Alabdulkader – Leat chart to measure their reading performance. The participants were divided into five age groups. The outcome measures were the maximum reading speed in standard-length words per minute, critical print size, reading acuity, and reading accessibility index. Results: The average reading performance measures were as follows: 171 ± 27 standard-length words per minute for maximum reading speed, 0.01 logarithm of the minimum angle of resolution for critical print size, −0.17 logarithm of the minimum angle of resolution for reading acuity, and 1.02 for the accessibility index. There were significant differences among the age groups, indicating a dependency on age and showing a plateau for the young adult group and a decline with age. The accessibility index had an almost perfect correlation with maximum reading speed and a weak but significant relationship with reading acuity and critical print size. Conclusion: Arabic exhibits an age-dependent trend in reading speed. However, owing to differences in orthography, visual demands, and reading strategies, the magnitude of the decrease and increase differs, potentially accounting for the variations between languages, especially when compared to English. This study serves as a foundation for future studies on Arabic reading performance. Future studies should examine the reading performance in patients with low vision, study the effects of common diseases on reading ability, evaluate the effectiveness of reading devices, and assess improvements in vision rehabilitation. [ABSTRACT FROM AUTHOR]

Background Methods Results Conclusion The certificate of vision impairment has an important role in enabling access to support for people with vision impairment (VI) and the provision of epidemiological data regarding sight loss. However, the rates of certification may not accurately reflect the number of people living with certifiable VI.Observational data from a national primary care low vision rehabilitation service between 1 April 2021 and 31 March 2022 were analysed. Descriptive statistics were used to describe the certification status of patients with certifiable VI. For patients with age‐related macular degeneration (AMD) and best‐corrected visual acuity of 6/60 or worse, logistic regression was undertaken to assess the effects of patient characteristics on certification status.For patients with AMD and certifiable levels of visual acuity, 41.00% (n = 426) were not certified. The reported certification was 60.09% (n = 256) and 58.24% (n = 357) for neovascular AMD and atrophic AMD, respectively. Existing patients of the service were 3.87 times more likely to be certified than new patients (OR 3.87, 95% CI 2.7–5.4). Increasing age (OR 1.02, 95% CI 1.004–1.038) and decreasing visual acuity (OR 0.62, 95% CI 0.50–0.78) were associated with an increased likelihood of certification.A significant number of patients live with certifiable vision impairment but do not access certification. Policy changes in Wales now enable patients with bilateral atrophic AMD to access certification within the primary care setting. Given the unmet need, consideration should be given to primary care certification in the rest of the UK, and in Wales, the potential to expand the scope of conditions. [ABSTRACT FROM AUTHOR]

As the number of social media users continues to increase globally, it is important to explore the experiences of different segments of users. While research on social media use by people with vision impairment is growing, lacking is research in this area in Nigeria. This qualitative study describes the lived experiences and perceptions of social media use among Nigerian adults with vision impairment, using a transcendental approach. Findings showed that people with vision impairment experienced a reduction in social connectedness due to their vision impairment, but those who used social media were able to enhance social connectedness, increase social interaction, develop social relationships and expand their social networks. Participants described social media as a good medium for learning and education as it enabled ready access to information. Results indicated that supporting adults with vision impairment experiencing reduced social connectedness to engage with social media could help improve their social well-being. [ABSTRACT FROM AUTHOR]

O presente relato de caso identificou a maculopatia média aguda paracentral como a causa de baixa de acuidade visual severa e irreversível após cirurgia de catarata. Existem fatores de risco bem estabelecidos para o desenvolvimento da maculopatia média aguda paracentral que devem ser conhecidos pelos cirurgiões de catarata. Nesse contexto cirúrgico, precauções extras no tocante a procedimentos anestésicos, pressão intraocular e alguns outros aspectos da cirurgia devem ser consideradas. A maculopatia média aguda paracentral é descrita como um sinal clínico observado no exame de tomografia de coerência óptica por domínio espectral e se trata, provavelmente, da evidência de um evento isquêmico no tecido vascular retiniano. Esse diagnóstico deve ser cogitado nos casos de perda de acuidade visual súbita no pós-operatório imediato associada com exame fundoscópico normal, como evidenciado no caso apresentado. [ABSTRACT FROM AUTHOR]

The accuracy of satellite-based positioning systems is poor in indoor environments and around built environments. Reading and following visual cues still remain the most common mechanism for providing and receiving wayfinding information in such spaces. This reliance on visual function for wayfinding puts individuals who are blind or visually impaired (BVI) at a great disadvantage, and there remains a great need to provide a low-cost, easy-to-use, and reliable wayfinding system within indoor and outdoor spaces that complements existing satellite-based systems. This paper presents the design, implementation, and evaluation of an initial prototype wayfinding system and smartphone application called CityGuide that can be used by BVI individuals to navigate their surroundings beyond what is possible with just a GPS-based system. CityGuide enables an individual to query and get turn-by-turn shortest route directions from an indoor location to an outdoor location. CityGuide leverages recently developed Bluetooth Low Energy (BLE) indoor wayfinding solutions in conjunction with satellite signals to provide a seamless indoor–outdoor navigation and wayfinding system that guides a BVI individual to their desired destination through the shortest route. Evaluations of CityGuide with BVI human subjects within an unfamiliar university campus scenario demonstrated its potential to be effective compared to other popularly used apps. [ABSTRACT FROM AUTHOR]

BACKGROUND: Vision loss increases with age and is thus more likely to happen later in one's career. With more individuals working beyond typical retirement age, the possibility of experiencing vision loss while working has increased. OBJECTIVE: The purpose of this study was to investigate how developing vision loss during midlife affects employment and retirement. METHOD: Using longitudinal Health and Retirement Study data, we identified a sample of 167 workers, 44 to 64 years old, who developed vision loss and a matched comparison sample of 800 workers who did not. We explored job retention and retirement differences between the groups and differences between people with vision loss who retained jobs versus those who did not. RESULTS: Vision loss was associated with leaving the labor force, although there was a clear trend over time of increasing likelihood of job retention. Occupational category was associated with job retention and people who continued working had more favorable financial situations. Retirees with vision loss were more likely to report involuntary retirement and dissatisfaction with retirement. CONCLUSIONS: The decreasing likelihood of leaving the labor market after vision loss is an encouraging finding of this study. Workers who left the labor force after vision loss were more likely to be in precarious financial positions, and retirees did not have positive experiences with retirement. Assisting workers with vision loss to remain in the labor force is of vital importance, and increasing awareness and usage of free services for this population may reduce involuntary retirement and its negative consequences. [ABSTRACT FROM AUTHOR]

Background: Research and monitoring of human resources available for vision rehabilitation services has been a neglected area of work in the past. This study aims to offer an overview of the vision rehabilitation workforce available in Italy, in order to profile the distribution and number of human resources for vision rehabilitation. Methods: Data on the available vision rehabilitation professionals were collected from the yearly report on the state of implementation of policies relating to the prevention of blindness, education and vision rehabilitation, according to a law which was passed by the Italian Ministry of Health, Department of Health Prevention. The report presents a review of all professional workers dealing with low vision rehabilitation centers in Italy between January 2005 and December 2019. Data on the distribution and type of services of government-supported low vision centers across the country were also obtained and examined. Results: Of the 289 low vision rehabilitation workers in 2019, 28% were ophthalmologists, 31% orthoptists, 19% psychologists, 17% nurses and 5% social workers. The health workforce densities across the Italian regions ranged from 1.62 to 0.12 per 100.000. The density of vision rehabilitation workers showed a no growing trend from 2006 to 2015. During the study period, it was found a weak but statistically significant association of workforce density with the number of government-supported low vision centers across the Italian territory (r2 = 0.3, p < 0.05). The vision rehabilitation workforce was not associated with the number of low vision patients who accessed to a vision rehabilitation center (r2 = 0.05, p < 0.0001). Discussion: A critical review has identified the following national situation: need-based shortages of workers in the vision rehabilitation service sector, as well as deficiencies in data sources. Based on our results, we would recommend increasing the development of human resources trained and dedicated to vision rehabilitation and improve data collection and analysis; provide structural enhancements, across all service levels. These considerations may contribute to the enhancement of policy decisions in order to guarantee an adequate vision rehabilitation workforce and meet national rehabilitation needs. Furthermore, this analysis should be used as a lesson learned by other countries, as low-income ones, in order to develop vision rehabilitation services. [ABSTRACT FROM AUTHOR]

Objective: This study aims to explore the effect of Internet + E-Coach chronic disease system intervention on fasting blood glucose (FPG), 2-hour postprandial blood glucose(2hPG), fasting serum insulin (FINS), triglyceride (TG), alanine transaminase (ALT) and quality of life in patients with chronic diabetic retinopathy. Methods: 208 patients with chronic diabetic retinopathy who were treated in the hospital from March 2021 to March 2023 are chosen and separated into two groups by random number Table 104 patients in the control group received routine continuous intervention, and the research group received Internet + E-Coach chronic disease system intervention. The cognition of disease related knowledge, blood related indicators inflammatory factor levels and improvement of life quality between the two groups before intervention, 6 and 12 months after intervention were compared. Results: Before the intervention, the comparison between the two groups in disease related knowledge scores, blood glucose, blood lipid, liver function indicators, inflammatory factor, and low vision quality of life scale (CLVQOL) scores was with P > 0.05. After 6 and 12 months of intervention, the research group had significantly higher scores for basic blood glucose intervention, healthy diet, reasonable exercise, and correct medication use compared to the control group (P < 0.05). FPG, 2hPG, TG and ALT in the research group were lower than those in the control group. FINS were higher in the control group, with P < 0.05. Interleukin-6 (IL-6), tumor necrosis factor (TNF-α), and hypersensitive C-reactive protein (Hs-CRP) in the research group were obviously lower than those in the control group (P < 0.05). The scores of far vision, movement and light perception, adjustment ability, reading and fine work, and daily living ability in the research group were higher than those in the control group, with P < 0.05. Conclusion: The intervention of Internet + E-Coach chronic disease system can improve the knowledge of chronic diabetic retinopathy patients about their own condition, stabilize the levels of blood sugar, blood lipid and liver function indicators, reduce the inflammatory reaction of the body, and improve the quality of life. [ABSTRACT FROM AUTHOR]

The editorial "Neuromodulation technology: advances in optics and acoustics" published in Frontiers in Cellular Neuroscience discusses the transformative potential of neuromodulation technologies in treating neurological disorders and advancing neuroscience research. The article highlights recent innovations in optical and acoustic methods that offer minimally invasive neuromodulation with higher spatial and temporal resolution. It also explores the use of optical tools like retinal prostheses and optogenetics, as well as acoustic modulation through sonogenetics, to manipulate neural activity for therapeutic and research purposes. The integration of these technologies shows promise for more effective treatments and deeper insights into brain function, although challenges in research translation and regulatory processes remain. [Extracted from the article]

Background: While general self-efficacy is known to relate to achievement in many areas, it has rarely been evaluated in individuals with low vision. Here we explore the psychometric properties and targeting of the New General Self Efficacy Scale (NGSES) using Rasch analysis in data collected from older adult clinical trial participants with low vision. Methods: Participants (n = 121) completed pre-intervention telephone questionnaires (i.e., NGSES, Activity Inventory (AI), Beck Depression Inventory (BDI), SF-36, and the Telephone Interview for Cognitive Status (TICS). Rasch analysis using the Method of Successive Dichotomizations (MSD) was applied to NGSES, AI, and BDI datasets to estimate person and item measures, and ordered rating category thresholds. NGSES infit mean square statistics and standard errors were analyzed to test whether data fit Rasch model requirements, and targeting was assessed by comparing distributions of person and item measures. Multiple linear regression evaluated the influence of participant characteristics on NGSES person measures. Results: There was a significant difference (p = 0.01) in the distributions of NGSES person measures (mean = 0.85, range -2.1-3.2) and item measures (mean = 0, range -1.0-0.72). Infit mean square statistics and standard errors for item and person measures conformed to expectations of the Rasch model. Greater NGSES person measure was related to lower BDI person measure (β = -0.48, p < 0.0005, 95% CI -0.67—-0.28) and higher AI person measure (β = 0.11, p = 0.047, 95% CI 0.0013 – 0.22) after controlling for cognitive status (TICS). Other variables including SF-36, visual acuity, and patient demographics were not related to NGSES person measure. Conclusions: While NGSES person measures estimated from a low vision patient population conformed to basic Rasch model requirements, the significant differences in the person and item measure distributions indicate poor NGSES targeting, specifically a ceiling effect. Therefore, there is limited discrimination between persons at the upper end of the scale. While further work can evaluate how self-efficacy may be associated with other factors in the low vision patient population, the ceiling effect found in this study cautions interpretation of NGSES results for those with high general self-efficacy. Trial registration: Pre-registered on clinicaltrials.gov, identifier NCT04926974. [ABSTRACT FROM AUTHOR]

This study conducted a longitudinal inquiry into how reflection and reflexivity influenced the development of ideal multilingual selves (IMS). The Dominant Language Constellations (DLC) was adopted to understand the operationalisation and development of IMS and how students’ reflection and reflexivity at different cognitive levels influenced the maintenance or development of their IMS. Five rounds of interviews and two rounds of written journals were collected from nine Chinese learners of German over 28 months. Findings suggested that most participants reflected on their multilingual experiences at lower cognitive levels, which could hardly maintain the vision of being multilingual longitudinally. In comparison, learners who continued to strengthen their IMS tended to demonstrate higher levels of reflection on multilingual experiences. They were also likely to activate more languages, including their first languages (L1s), in their DLCs during the reflective and reflexive process and identify the meaning of being multilingual for constructing their future selves. This research emphasised the significance of different levels of reflections and reflexivity in influencing the development of IMS and underscored the role of a holistic view of language in evoking higher-level reflective and reflexive thinking during LOTE learning. [ABSTRACT FROM AUTHOR]

Calcium is involved in vision processes in the retina and implicated in various pathologies, including glaucoma. Rod cells rely on store-operated calcium entry (SOCE) to safeguard against the prolonged lowering of intracellular calcium ion concentrations. Zebrafish that lacked the endoplasmic reticulum Ca2+ sensor Stim2 (stim2 knockout [KO]) exhibited impaired vision and lower light perception-related gene expression. We sought to understand mechanisms that are responsible for vision impairment in stim2 KO zebrafish. The single-cell RNA (scRNA) sequencing of neuronal cells from brains of 5 days postfertilization larvae distinguished 27 cell clusters, 10 of which exhibited distinct gene expression patterns, including amacrine and γ-aminobutyric acid (GABA)ergic retinal interneurons and GABAergic optic tectum cells. Five clusters exhibited significant changes in cell proportions between stim2 KO and controls, including GABAergic diencephalon and optic tectum cells. Transmission electron microscopy of stim2 KO zebrafish revealed decreases in width of the inner plexiform layer, ganglion cells, and their dendrites numbers (a hallmark of glaucoma). GABAergic neuron densities in the inner nuclear layer, including amacrine cells, as well as photoreceptors significantly decreased in stim2 KO zebrafish. Our study suggests a novel role for Stim2 in the regulation of neuronal insulin expression and GABAergic-dependent vision causing glaucoma-like retinal pathology. [ABSTRACT FROM AUTHOR]

Purpose: Many older dogs (Canis lupus familiaris) develop cognitive impairment. Dog owners often describe impairments in multiple sensory functions, yet the relationships between sensory and cognitive function in older dogs is not well understood. Methods: We performed assessments of dog vision and hearing, both clinically (n = 91, electroretinography and brainstem auditory evoked potential) and via validated questionnaire (n = 238). We determined prevalence of sole and dual hearing/vision impairments in younger (<8 years) and older (≥8 years) dogs. Impairment cutoffs were determined using data from young dogs. We assessed the relationships between questionnaire-assessed vision and/or hearing impairments and cognitive impairment using logistic regression. Results: Younger and older dog groups had similar distributions of sex and purebred/mixed breed status. Sex had no relationship to prevalence of sensory impairments. Older dogs had higher prevalence of hearing, vision, and dual sensory impairments, assessed both clinically and by questionnaire (P<0.001), and cognitive impairment assessed by questionnaire (P<0.001). Dogs had higher prevalence of reported cognitive impairment when owners reported dual vision and hearing impairments (79–94%, versus 25–27% in dogs with no sensory impairments), which was most consistent in dogs aged ≥8 years. In these older dogs, dual vision/hearing impairments were associated with a significantly increased risk of cognitive impairment (1.8–2.0 odds ratio). Conclusion: Dogs aged ≥8 years are at higher risk for dual hearing/vision impairments and associated cognitive impairments. The causal relationship between these impairments is not defined, but clinical consideration of these multimorbidity risks should be made in older dogs. [ABSTRACT FROM AUTHOR]

Predicting the consequences of the agent's actions on its environment is a pivotal challenge in robotic learning, which plays a key role in developing higher cognitive skills for intelligent robots. While current methods have predominantly relied on vision and motion data to generate the predicted videos, more comprehensive sensory perception is required for complex physical interactions such as contact-rich manipulation or highly dynamic tasks. In this work, we investigate the interdependence between vision and tactile sensation in the scenario of dynamic robotic interaction. A multi-modal fusion mechanism is introduced to the action-conditioned video prediction model to forecast future scenes, which enriches the single-modality prototype with a compressed latent representation of multiple sensory inputs. Additionally, to accomplish the interactive setting, we built a robotic interaction system that is equipped with both web cameras and vision-based tactile sensors to collect the dataset of vision-tactile sequences and the corresponding robot action data. Finally, through a series of qualitative and quantitative comparative study of different prediction architecture and tasks, we present insightful analysis of the cross-modality influence between vision, tactile and action, revealing the asymmetrical impact that exists between the sensations when contributing to interpreting the environment information. This opens possibilities for more adaptive and efficient robotic control in complex environments, with implications for dexterous manipulation and human-robot interaction. [ABSTRACT FROM AUTHOR]

From an architectural perspective, the purpose of this paper is to explore the dynamic relations between individuals and the environments using the concept of affordance. In three different cases of architectural research, the concept of affordance is used as an analytical tool – yet demonstrating different scopes and outcomes. A post-occupancy evaluation of an office space in transformation; a lighting assessment and intervention in low vision rehabilitation situated in private home environments; and an urban event at an architecture festival involving the intervention of a sound- and scentscape. The three cases show that the concept of affordance can embrace and operationalize the human perception of the environment, pointing at descriptive, prescriptive, and exploratory possibilities in relation to architectural design and research. The concept of affordance enables rich descriptions and explorations of qualities of architecture, related to multisensorial, emotional, and social interactional aspects of humans and their environments. [ABSTRACT FROM AUTHOR]

This study investigated the design processes for developing eye training materials for children with low vision (CLV) using computer game applications based on eye movement tracking to enhance their vision skills. The primary aim was to create interactive eye training materials tailored to improve CLV’s vision abilities. Employing a design-based research methodology, the study followed four distinct phases: analysis, development, evaluation and testing, and documentation and reflection. Initially, a game-based eye training program was developed. This program was then tested with CLV to gather relevant data for refining the design of eye-gaze games. Data were meticulously collected from a diverse group of stakeholders, including parents, special education teachers, ophthalmologists, and expert faculty members, using various methods such as interviews, focus group meetings, usability testing, and direct observations. The results provided critical insights into the design processes required to create a practical and usable game-based eye training program for CLV. These findings highlighted that children with low vision could benefit significantly from eye-tracking technology, using it to enhance their scanning, focusing, and tracking skills. Overall, the study suggests that eye-tracking technology offers a promising tool for developing vision-improving interventions for children with low vision, thus contributing valuable knowledge to the field of vision rehabilitation. [ABSTRACT FROM AUTHOR]

Governments have been investing considerable resources into making their services to citizens available through the Internet. However, people face barriers when accessing these e-services. Barriers affect people with disabilities to a greater extent. Taking into account the accessibility-in-use in addition to the required standards while designing these services would mitigate some of these issues. In this work, five e-services from the Spanish government were selected from among the most used ones and tested with fifteen participants, of whom ten participants belong to the group of people with low vision. Different qualitative and quantitative measures were analyzed to determine whether participants with low vision had more difficulties performing the tasks and to identify the design issues required to achieve improvement. The results highlighted some issues to be incorporated into the complexity and cognitive accessibility evaluations of e-services to anticipate difficulties (e.g., error prompting/prevention mechanisms). In addition, contributions to existing accessibility standards are proposed to be considered in the design of the e-services. [ABSTRACT FROM AUTHOR]

Purpose: This study aimed to vet the measurement properties of Brief-BESTest scores in children, adolescents, and youth with visual impairment and blindness (YVI). Methods: A cross-sectional sample of YVI (N = 101) completed the Brief-BESTest, a modified version of the Y-Balance Test, the 360-degree turn test, bipedal quiet stance, and Activity-Specific Balance Confidence Scales. Thirty-seven YVI completed test-retest of the Brief-BESTest using a one-year interval. Using classical test theory, various forms of total and item-level Brief-BESTest score reliability and validity were investigated in YVI. Results: All inter-rater reliability coefficients were ≥.80. When considering the eight items of the Brief-BESTest, 27 of the 28 possible correlations were statistically significant (p<.05). Various internal consistency and item difficulty results were strong. When taking total Brief-BESTest scores and their association with the complementary balance tasks/metrics into account, 11 of 13 associations were statistically significant (p<.05) providing strong convergent validity evidence. Being multimorbid and degree of vision significantly predicted total Brief-BESTest scores (p<.001) suggesting construct (i.e. known groups) validity. Numerous test-retest results (e.g. coefficients, limits of agreement) following the one-year interval were indicative of score stability. Conclusion: Practitioners and researchers should have confidence in, and consider adopting, the Brief-BESTest to examine multidimensional balance in YVI. IMPLICATIONS FOR REHABILITATION: Rehabilitation, motor, and health professionals should view the Brief-BESTest as the preeminent clinical balance assessment for children, adolescents, and youth with visual impairment and blindness (YVI). Brief-BESTest scores may be used to investigate multidimensional balance, provide 'systems-based' balance profiles, and inform targeted balance interventions in YVI. Practitioners and researchers may now investigate Brief-BESTest scores alongside pertinent health- or movement-relevant outcomes of interest (e.g., gait, mobility, falls). [ABSTRACT FROM AUTHOR]

Purpose: This paper aims to evaluate the accessibility of digital information systems as a key usability attribute in information retrieval by users with visual impairment (VI), to inform development of accessible information systems. Design/methodology/approach: This study used a cross-sectional survey design based on the quantitative research paradigm. Data was collected from 117 students with visual impairments from selected public universities in Kenya, using a semi-structured questionnaire adapted from Web Content Accessibility Guidelines. Findings: This study revealed that gender did not influence screen reader compatibility, alternative format preferences, perceptions of accessible content or digital library navigability. Instead, type of visual impairment, prior assistive technology (AT) training and digital library use frequency significantly impacted these attributes. Blind students reported positive experiences, favouring alternative formats, and expressed positive views on accessible content while those with low vision faced more challenges. Prior training in assistive technology and frequent digital library use resulted in higher screen reader compatibility and better navigability. Increased digital library use was linked to access to alternative content for those with prior assistive technology training. Research limitations/implications: This study contributes to the existing literature on accessibility of digital information systems for users with visual impairments. Further research is needed to explore other factors that may influence the accessibility of digital systems, such as the design of user interfaces as well as an evaluation of accessibility of digital systems for other categories of disabilities such as hearing impairment, physical impairment, autism and intellectual disability, among others. Practical implications: The findings of this study have practical implications for the design and development of digital systems such as digital libraries. Developers can leverage findings of this study to enhance compatibility of digital platforms with screen readers and provide alternative formats and accessible content. User-centred design principles can be used to create interfaces that are easy to navigate and friendly to users with visual impairments. Training programmes on assistive technology should be provided to users to enhance their skills and confidence in using digital systems. Originality/value: This study contributes towards design and creation of navigable systems that are compatible with screen readers. The study also points out the importance of creating more inclusive and usable digital environments for persons with visual impairments. [ABSTRACT FROM AUTHOR]

This article discusses the importance of ensuring quality in education and fostering inclusive approaches for learners with special needs. It emphasizes the need for educators to focus on high standards, personalized evaluation, and the well-being and outcomes of learners. Inclusive education is highlighted as a means of promoting equality and empowerment, rejecting the use of special schools or classrooms to separate students with disabilities. The article also explores the challenges and strategies in creating inclusive learning environments, such as the need for teacher training programs to strike a better balance between theory and practice, the importance of neurodiversity-affirming practices in higher education, and the significance of digital accessibility. The integration of AI technologies and continuous reflection on inclusive practices are also emphasized as vital components in creating equitable educational environments. [Extracted from the article]

Side-scan sonar (SSS) images present unique challenges to computer vision due to their lower resolution, smaller targets, and fewer features. Although the mainstream backbone networks have shown promising results on traditional vision tasks, they utilize traditional convolution to reduce the dimensionality of feature maps, which may cause information loss for small targets and decrease performance in SSS images. To address this problem, based on the yolov8 network, we proposed a new underwater target detection model based on upsampling and downsampling. Firstly, we introduced a new general downsampling module called shallow robust feature downsampling (SRFD) and a receptive field convolution (RFCAConv) in the backbone network. Thereby multiple feature maps extracted by different downsampling techniques can be fused to create a more robust feature map with a complementary set of features. Additionally, an ultra-lightweight and efficient dynamic upsampling module (Dysample) is introduced to improve the accuracy of the feature pyramid network (FPN) in fusing different levels of features. On the underwater shipwreck dataset, our improved model's mAP50 increased by 4.4% compared to the baseline model. [ABSTRACT FROM AUTHOR]

In the current labor market, assistive technology (AT) is vital to employment for people with blindness or low vision (B/LV), yet we know little about their AT use in the workplace. The purpose of this descriptive study was to increase our knowledge in this area. Participants were 314 employed people with B/LV who completed an online or phone survey about AT used on the job and perceived skill level, satisfaction, and challenges experienced with their workplace AT. Two researchers utilized content analysis to code open-ended responses and descriptive statistics were used to analyze quantitative data. Self-perceived skill levels were moderately high to high for each AT. Satisfaction with AT was generally high, but 15% or more participants expressed dissatisfaction with their AT for five tasks. Dissatisfaction with AT for some work tasks differed noticeably by type of AT being used to accomplish the task. Accessing certain software, websites, or digital documents was the most common challenge experienced, mentioned by 59.1% participants, representing an ongoing problem in the technological workplace environment for people with B/LV. In addition to websites, specific areas that present access or utilization challenges are slide presentation software, PDFs, spreadsheets, virtual meeting software, and printed material. [ABSTRACT FROM AUTHOR]

Objective: To evaluate the effectiveness of a low-vision service by using three tools and to identify the specific outcomes obtained from each instrument. Materials and Methods: Patients consecutively visiting the low-vision clinic at Siriraj Hospital, Bangkok, Thailand, were enrolled. The impact of the prescribed rehabilitation on patient quality of life was measured using three tools: the Low-Vision Quality-Of-Life Questionnaire (LVQOL); the generic EuroQol Five-Dimensional Questionnaire (EQ-5D); and the World Health Organization International Classification of Functioning, Disability, and Health (WHO-ICF). Results: Out of the 104 patients recruited, 76 patients (mean age, 53 ± 16.2 years) completed the questionnaires before and after rehabilitation, which was assessed after 5.8 ± 2.0 months. Post-rehabilitation, the time of followup, patients had significant improvements in the mean scores of both the LVQOL scores and mean EQ-5D scores compared to before rehabilitation (P < 0.001), with Cohen's effect sizes of 0.85 and 0.67, respectively. Subgroup analyses by age, severity, and cause of visual impairment also showed significant improvements in the LVQOL (P < 0.05), but not the EQ-5D score in the blindness severity subgroup. The ICF scores also showed significant improvement in most domains, including seeing functions, mobility across different locations, transportation use, meal preparation, economic self-sufficiency, community life, and recreational activities (P < 0.01). Conclusion: Patients with low vision experienced significant improvements following vision rehabilitation, especially in terms of seeing functions and mobility. Evaluation by different questionnaire types could provide additional information. The WHO-ICF was effective in assessing each domain related to activity performance and participation. [ABSTRACT FROM AUTHOR]

Purpose: Accurate objective assessment of visual acuity is crucial, particularly in cases of suspected malingering, or when the patient's inability to cooperate makes standard psychophysical acuity tests unreliable. The P300 component of the event-related potentials offers a potential solution and even allows for the use of standard optotypes like the Landolt C. However, low-vision patients with large eccentric visual field defects often struggle to locate the Landolt C gap quickly enough for a P300 to be reliably produced. Methods: Addressing this challenge, we introduce a novel optotype (the "FreiBurger") with a critical detail that extends through the optotype's center. Two experiments, with 16 and 12 participants, respectively, were conducted. In the first, psychophysical acuity estimates were obtained with both the FreiBurger and the Landolt C. In the second, we tested the performance of the FreiBurger, relative to the Landolt C, in eliciting a P300 with undegraded vision, simulated low vision, and in a simulated combination of low vision and visual field constriction. Results: Comparable psychophysical acuity values (average difference 0.03 logMAR) were obtained for both optotypes. In the P300 recordings, both optotypes produced similar P300 responses under conditions of undegraded vision and low vision. However, with the combination of low vision and constricted visual field, the P300 could only be reliably obtained with the FreiBurger, while the amplitude was drastically reduced with the Landolt C (9.1 µV vs. 2.2 µV; p < 0.0005). Conclusion: The new optotype extends the applicability of P300-based acuity estimation to the frequently encountered combination of low vision and constricted visual field, where Landolt C optotypes fail. Although impairments were simulated in the present study, we assume that the advantages of the new optotype will also manifest in patients with such impairments. We furthermore expect the advantages to apply to time-sensitive psychophysical examinations as well. [ABSTRACT FROM AUTHOR]

The visual approach is the most accident-prone phase of a flight, especially in low-visibility conditions. This preliminary study aimed to examine the effects of flight experience on pilots' decision-making and visual scanning pattern in low-visibility approaches. Twenty pilots were separated into two groups based on their flight experience and completed the high- and low-visibility approaches in balanced order using a high-fidelity flight simulator. Pilots' mental workload and visual scanning patterns were recorded via an eye tracker. The results showed that, compared to less flight-experienced pilots (20%, 3/15), experienced pilots (80%, 4/5) were more likely to make go-around decisions in the low-visibility approaches. Furthermore, they exhibited a more flexible and adaptable visual scanning pattern by quickly shifting their attention, as evidenced by decreased fixations and increased saccades. These findings suggest that the integration of visual scanning strategy and training solution with a marginally meteorological approach may enhance decision-making safety for novice pilots. PRACTITIONER SUMMARY: This study investigates the 'expertise effects' in visual scanning pattern, mental workload and decision-making among pilots with different levels of flight experience in a modern flight simulator. For safer decision-making, less flight-experienced pilots should enlarge their visual scanning span in a more unburdened manner, especially in low-visibility approaches. [ABSTRACT FROM AUTHOR]

Reconstruction-free image compression for machine vision aims to perform machine vision tasks directly on compressed-domain representations instead of reconstructed images. Existing reports have validated the feasibility of compressed-domain machine vision. However, we observe that when using recently learned compression models, the performance gap between compressed-domain and pixel-domain vision tasks is still large due to the lack of some natural inductive biases in pixel-domain convolutional neural networks. In this article, we attempt to address this problem by transferring knowledge from the pixel domain to the compressed domain. A knowledge transfer loss defined at both output level and feature level is proposed to narrow the gap between the compressed domain and the pixel domain. In addition, we modify neural networks for pixel-domain vision tasks to better suit compressed-domain inputs. Experimental results on several machine vision tasks show that the proposed method improves the accuracy of compressed-domain vision tasks significantly, which even outperforms learning on reconstructed images while avoiding the computational cost of image reconstruction. [ABSTRACT FROM AUTHOR]

Background: Instrumental activities of daily living (IADL) are typically self-reported ability to perform complex tasks vital for independent living. There is a need for a complementary objective, performance-based approach especially in tracking outcomes in visual rehabilitation for patients with irreversible vision impairment ("low vision"). Our goals are: (1) To describe the validity of timed performance of instrumental activities of daily living (timed IADL or TIADL) tasks in individuals with irreversible vision impairment, by examining its association with visual function (visual acuity, contrast sensitivity, visual field), (2) To explore the correlation between TIADL and self-reported IADL. Methods: Twenty TIADL tasks were administered to 88 patients (median age 63.3 years, IQR 37.4–78.0) recruited from the UAB Department of Ophthalmology, Callahan Eye Hospital Clinics. An average Z-score incorporating time and accuracy of task completion was constructed. Minor accuracy errors were penalized 1 standard deviation from their calculated Z-score and major accuracy errors were assigned maximum allotted time. Linear regression was used to analyze the association between TIADL score and measured visual acuity (Early Treatment Diabetic Retinopathy Study, ETDRS chart), contrast sensitivity (Pelli-Robson), and binocular visual field (Esterman) with an unadjusted model and an adjusted model accounting for age, comorbidities, and depression scale (Center for Epidemiological Studies Depression, CES-D). Pearson correlation was used to estimate the correlation between TIADL and IADL. Results: Increased time to task completion was associated with decreased visual function. Each decreased line of ETDRS read was associated with an increase of 0.002 (95% CI 0.001, 0.002) Z-score (P < 0.01). A decreased ability to discern each Pelli-Robson letter was associated with an increase of 0.26 (95% CI 0.19, 0.33) Z-score (P < 0.01). For each less Esterman target identified, there was an increase of 0.01 (95% CI 0.003, 0.02) Z-score. Self-reported IADL and TIADL were correlated for reading tasks such as newspapers, nutrients on food can, and microwave timer (P < 0.05). Conclusions: Longer time to perform TIADL is associated with decreased visual acuity, contrast sensitivity, and binocular visual field. TIADL and self-reported IADL are significantly correlated for reading tasks providing an accurate, complementary outcome measure in clinical practice and research. [ABSTRACT FROM AUTHOR]

The primary causes of low vision in children include genetic factors, congenital anomalies, and perinatal issues. The visual rehabilitation for these children is a complex and crucial process that involves comprehensive assessments and interventions, particularly focusing on functional vision evaluation and rehabilitation. The rehabilitation of children with low vision encompasses not only vision training but also the use of appropriate optical and non-optical aids, improvement of functional vision, and enhancement of the environment and related service facilities. Preventing, early screening, and evaluating low vision in children are also of paramount importance. This includes perinatal screenings, systematic eye health services, and comprehensive visual function assessments. Currently, the visual rehabilitation of children with low vision faces several challenges, including difficulties in early diagnosis and intervention, challenges within the educational system, a lack of specialized rehabilitation institutions and professionals, and a limited variety and quality of assistive products. In the future, it is necessary to further improve the rehabilitation service network and institution development, strengthen the training of professionals, and increase policy investment to enhance the effectiveness of visual rehabilitation and the quality of life for children with low vision. [ABSTRACT FROM AUTHOR]

AbstractPurposeMethodsResultsConclusionsTo identify risk factors for vision recovery in indirect traumatic optic neuropathy (TON) and to analyze the outcomes associated with surgical treatment for TON.Between 2020 and 2023, a total of 105 patients diagnosed with traumatic optic neuropathy (TON) at Shanghai Ninth People’s Hospital and Shanghai Minhang Hospital were included in a retrospective study. These individuals underwent optic nerve decompression surgery as part of their treatment. To collect comprehensive data, both preoperative and postoperative information was gathered. For analytical purposes, only those patients who had a minimum of one month follow-up post-treatment were considered. The statistical analysis incorporated the use of median values, odds ratios (OR), and 95% confidence intervals (CI) to interpret the data. Any p-values less than 0.05 were deemed to indicate statistical significance, underlining the rigorous criteria set for this study.A total of 105 patients, with a mean age of 31.8 ± 14.9 years, met the inclusion criteria; 89.5% (94) were men, and 10.5% (11) were women. The median time to seek medical attention after injury was 4 days (range: 1 to 15 days). Prognostic factors associated with visual acuity (VA) improvement included a gradual VA loss pattern (OR: 2.22, 95% CI: 0.91–5.67, p = 0.045), while canal fractures (OR: 0.31, 95% CI: 0.095–0.933, p = 0.019) significantly correlated with poor VA outcomes.This study suggested that surgical interventions benefit TON patients with low vision. Gradual VA loss, rather than sudden loss after injury, may be a potential prognostic factor for favorable VA outcomes, while canal fractures, as detected on computed tomography (CT) imaging—especially complex canal fractures, are associated with poor VA outcomes. In the future, more definitive prospective treatment trials are required to identify optimal treatment strategies for TON. [ABSTRACT FROM AUTHOR]

Biologically inspired artificial vision research has led to innovative robotic vision systems with low optical aberration, wide field of view, and compact form factor. However, challenges persist in object detection and recognition against complex backgrounds and varied lighting. Inspired by the feline eye, which features a vertically elongated pupil and tapetum lucidum, this study introduces an artificial vision system designed for superior object detection and recognition in a monocular framework. Using a slit-like elliptical aperture and a patterned metal reflector beneath a hemispherical silicon photodiode array, the system reduces excessive light and enhances photosensitivity. This design achieves clear focus under bright light and enhanced sensitivity in dim conditions. Theoretical and experimental analyses demonstrate the system's ability to filter redundant information and detect camouflaged objects in diverse lighting, representing a substantial advancement in monocular camera technology and the potential of biomimicry in optical innovations. [ABSTRACT FROM AUTHOR]

ImportanceObjectiveDesignSettingParticipantsIntervention(s) or Exposure(s)Main Outcome(s) and Measure(s)ResultsConclusions and Relevance\nKEY POINTSAlström syndrome is a rare genetic disorder characterized by retinopathy and has life-threatening complications. Alström syndrome is frequently misdiagnosed or confused with other early childhood disorders with retinopathy.  Understanding the spectrum of ocular manifestations of Alström syndrome is essential for ophthalmologists to recognize the cause and institute-appropriate care for this disorder that requires multidisciplinary attention.To quantify and summarize the common ocular findings of Alström syndromeCase series, clinical exam data obtained from 2015 to 2023Semiannual multidisciplinary Alström syndrome clinics (2015–2023) at the Greater Baltimore Medical Center (GBMC), organized by Alström Syndrome International (ASI)Forty-eight patients (38 children, 10 adults) with a known diagnosis of Alström syndrome participated in the semiannual multidisciplinary Alström syndrome clinics. Patients apply to be seen and are accepted based on need and capacity.Not applicableClinical ocular findingsParticipants in this study had a median age of 8 years (15 months to 42 years). Visual acuity and progression of vision loss varied. The youngest patient who was legally blind was 2 years old. The oldest patient who maintained useful vision was 7 years old. All patients 8 years old or older were legally blind. Nystagmus (94%, 45 of 48) and photophobia (73%, 35 of 48) were the most common first presenting ocular symptoms in childhood. Retinal vascular attenuation (91%, 40 of 44) and retinal internal limiting membrane changes (68%, 30 of 44) were the most commonly documented retinal findings in both children and adults followed by optic nerve (ON) pallor and retinal pigment epithelium (RPE) mottling. Less than half of the children had ON pallor (38%, 14 of 37) and RPEmottling (38%, 14 of 37), while all adults had these two findings (100%, 7 of 7). Retinal pigment clumps were not common in children (11%, 4 of 37), while common in adults (86%, 6 of 7).Knowledge of these ocular findings is key to promptly recognize Alström syndrome. The ocular phenotype of Alström syndrome is largely dependent on age, suggesting that low vision interventions and potential gene-based therapeutics should target children with this disorder.Question: What are the common ocular findings in Alström syndrome?Findings: In this case series study that included 48 patients with Alström syndrome, common ocular findings were retinal vascular attenuation and retinal internal limiting membrane changes documented in both children and adults. Optic nerve (ON) pallor and retinal pigment epithelium (RPE) mottling were relatively less common.Meaning: Knowledge of these clinical findings is essential to recognize this potentially vision- and life-threatening condition and to guide the optimal timing for receiving gene-based treatment in the future. [ABSTRACT FROM AUTHOR]

Introduction: Surveys conducted in schools for blind students have become useful alternatives to population-based surveys in generating data on childhood blindness and low vision. This survey determined the prevalence of low vision, causes of visual impairment, and the proportion of students requiring low vision devices and provided the low vision devices required. Methods: The study was conducted in three schools for blind students in two states of north-central Nigeria. The standard examination protocol of the World Health Organization's Prevention of Blindness and Low Vision for Children (WHO, 2005) was used to interview and assess participants. The causes of visual impairment were categorized using the definitions in the coding instruments (WHO, 1988). Results: The study examined 170 eyes of 85 students between 7 and 49 years of age with a male-to-female ratio of 1.4:1. Of the 83 (97.6%) students with visual impairments, 59 (69.4%) of them had low vision. The major anatomical sites of vision loss by eyes were the whole globe (n = 84, 55.3%), followed by the lens (n = 23, 15.1%) and the retina (n = 21, 13.8%). Overall, the leading causes of visual impairment in eyes were glaucoma (n = 52, 34.2%), retinitis pigmentosa (n = 21, 13.8%), phthisis bulbi (n = 16, 10.5%), cataract (n = 14, 9.2%), and keratoconus (n = 10, 6.6%). A total of 37 (43.5%) students were prescribed optical low vision devices, and 28 (32.9%) received nonoptical low vision devices. Discussion: A large number of the students in this study had low vision. They were prescribed and provided the low vision devices required. The causes of visual impairment were a mix of the patterns seen in both developing and developed countries. The finding of glaucoma as a more important cause of vision loss calls for improved efforts in screening, early detection, and treatment of glaucoma among children. Implications for Practitioners: Routine comprehensive visual assessment, refraction, and low vision assessment before enrollment will guard against improper school placements and enhance optimization of vision for those with low vision. [ABSTRACT FROM AUTHOR]

Background: Low Vision is an end-stage condition that cannot be cured. The best treatment for low vision is the early detection. However, there is still no integrated low vision data in health services, the lack of public knowledge about low vision, the low rate of case discovery, and the lack of optimal referral and treatment mechanisms for low vision are problems that must be addressed at this time. Purpose: This study aims to detect early low vision determinant factors using a self-assessment application. Methods: This study is analytical and quantitative research. Respondents for this research were from five selected populations in East Java who filled out the e-SIGALON application from September to December 2023. The respondents were suspected as having low vision if they had score of 6 or higher. The variables were analyzed using logistic binary regression, the validity and reliability test was also performed. Results: From 446 respondents, there were 237 people (53.14%) suspected of low vision but only 66 people came to referral hospital. The low vision suspect showed 12 of the 15 statistically significant questions (p<0.05). The most common was sitting very close to the television/monitor (48.43%), followed by having difficulties in seeing objects in dim light (44.17%) and difficulties in doing the things they want to do (40.13%). Conclusion: The e-SIGALON application can be a solution in managing low vision. Through this application, people can easily find out and recognize whether they have low vision or not. [ABSTRACT FROM AUTHOR]

BACKGROUND: A substantial gap in employment rates has been documented between people with and without visual impairments, but most employment-related research for people with visual impairments has focused on employment at one time point. OBJECTIVE: The purpose of this study was to examine longitudinal employment trajectories by visual impairment and investigate factors associated with trajectories for people with visual impairments. METHODS: The data source was the 2014 Panel of the Survey of Income and Program Participation. Participants were 816 adults with visual impairments and a matched comparison group of 816 adults without visual impairments. We used group-based trajectory modeling to estimate employment trajectories, identify predictors of trajectory group membership, and explore the impact of health on employment trajectories. RESULTS: Visual impairment was associated with a lower probability of membership in the Rising, Declining, and High employment trajectory groups compared to the Low group. Predictors of trajectory group membership included disability benefit receipt, non-visual disabilities, gender, race, age, and education. Fair or poor health was associated with decreases in all four trajectories over time. CONCLUSION: Visual impairment is a risk factor for not working across multiple years. Disability benefit receipt was the strongest predictor of trajectory group membership for this population. [ABSTRACT FROM AUTHOR]

Objective To report a case of successful rescue of right eye blindness induced by hyaluronic acid (HA) filler rhinoplasty using super-selective intra-artery thrombolytic therapy (IAT) of the ophthalmic artery, and explore the characteristics, safety, and efficacy of super-selective ophthalmic artery IAT in treating ophthalmic artery embolism caused by HA through a review of the literature. Methods In July 2023, Qingdao Eighth People's Hospital successfully treated a case of blindness caused by central retinal artery embolism due to HA with super-selective IAT of the ophthalmic artery, and the patient's vision returned to normal. A search was conducted in the database using the following keywords: cosmetic filler injection, hyaluronic acid (HA), soft tissue augmentation, blindness OR ophthalmoplegia, visual impairment OR retinal artery occlusion OR ophthalmic artery occlusion, hyaluronidase, intra-arterial thrombolytic therapy. The time limit for the search was from January 2010 to July 2023. The statistics included researchers, patient conditions, patient complication information, treatment information, and treatment outcomes. Results A total of 10 studies were included, with 6 from Chinese teams and 4 from Korean teams. These studies encompassed 114 patients including 1 case from the present study. All patients experienced vision loss or even blindness and received super-selective IAT of the ophthalmic artery. The thrombolytic agents used were hyaluronidase (93 cases) or urokinase (1 case), or a combination of both (17 cases). Currently, there is no unified protocol for the optimal dosage, dilution concentration, and treatment duration. When analysing the time of the first super-selective ophthalmic artery IAT treatment, the visual acuity before consultation, and the results of visual acuity improvement for patients with improved vision, it was found that the visual acuity improvement was not significantly correlated with whether or not the first super-selective ophthalmic artery IAT was performed within the time window (P>0.05), but significantly correlated with the extent of the patients' impaired visual acuity at the time of the super-selective ophthalmic artery IAT (P<0.05). Conclusion Super-selective IAT of the ophthalmic artery, using hyaluronidase and urokinase, can recanalize ophthalmic artery and its branches that have been embolized due to HA facial fillers, thereby restoring blood flow and improving impaired vision. However, the effect is limited. As an effective treatment for thrombolysis of HA-related intra-arterial embolism, super-selective ophthalmic artery IAT is still worth actively trying. [ABSTRACT FROM AUTHOR]

Background: Idiopathic intracranial hypertension (IIH) is a condition where intracranial pressure is raised in the absence of both abnormal neuroimaging and abnormal cerebrospinal fluid composition. We evaluate the clinical and ophthalmological parameters that could influence short term poor outcome of vision in IIH patients. Methods: A total of 18 IIH patients admitted to the department of Neurology, Zagazig University were included in this prospective cohort study. Complete clinical evaluation and ophthalmological assessment were done and included visual acuity, papilledema grading, field of vision, contrast sensitivity and color vision. Short term visual outcome was assessed after 3 months guided by visual field results and was correlated with clinical and ophthalmological parameters. Results: Visual acuity impairment from the onset was significant among patients with higher degrees of headache (p = 0.008), patients with impaired contrast sensitivity (p = 0.027 and 0.003 for RTand LT eye respectively) and patients with higher levels of serum cholesterol (p = 0.006). Short term visual outcome was assessed after 3 months and good prognosis was significantly correlated with young age (p = 0.004) and shunt operation (p = 0.038). Conclusion: Young age and early intervention by lumboperitoneal shunt were significant factors for good outcome of vision in IIH. Doctors should recognize that in order to preserve vision and lower morbidity. [ABSTRACT FROM AUTHOR]

Clinical Relevance: The support of students with a vision impairment throughout education could be enhanced by assessing the functional reading ability of the individual. This visual assessment could inform educators of individualised student needs and potentially improve the academic achievement for these students. Background: Support for children with a vision impairment within a classroom is typically based on clinical findings of distance visual acuity and visual fields. Therefore, determining optimal print size for reading is essential to ensure best academic outcomes. Secondary aims were to investigate the possible impact of underlying pathology on reading ability. Methods: Forty-seven participants were recruited from a state-wide support service for children with a vision impairment in South Australia. Three visual acuity groups were formed based on World Health Organisation definitions of mild, moderate, and severe vision impairment. Correlation between clinical measures of distance visual acuity using the Freiburg Visual Acuity Test, were compared with reading acuity and critical print size (smallest font before reading speed reduced) using Minnesota low vision reading chart (MNREAD). Results: No significant correlations were found for mild (0.20–0.49 logMAR) and severe (1.00–1.52 logMAR) vision impairment groups between distance visual acuity and reading acuity read (p =.64, CI [−.585,.395]/p =.82, CI [−.48,.58]) or critical print size (p =.78, CI [−.57,.45]/p =.43, CI [−.34,.68]. A significant correlation was found for the moderate vision impairment group: 0.50–0.99 logMAR for minimum reading acuity (p <.001, CI [.44,.91]) and critical print size (p =.03, CI [.05,.80]). Conclusions: Standard clinical measures of distance visual acuity are an unpredictable estimate of reading ability in children with mild and severe vision impairment. Additional measures of functional near reading ability could provide a more meaningful indicator of reading ability and help provide optimum support to students through education. [ABSTRACT FROM AUTHOR]

In the field of human-computer interaction, deformable user interfaces are gaining more attention. Gestures performed by bending the deformable device are commonly investigated in the literature. These bend gestures' inherent tactile and kinaesthetic feedback and their association with spatial directions benefit both blind and low vision (BLV) and sighted users. Bend gestures are naturally associated with two descriptors of bend, which are location and direction. One potential opportunity to extend this gesture space is to investigate additional descriptors of bend gestures without introducing new locations. In this context, size and angle are the two common additional descriptors of bend gestures. In this work, we conducted two (preliminary and main) studies to investigate BLV and sighted users' performance and preference for multiple magnitude levels of size and angle of bend on a smartphone-sized deformable prototype. Finally, we discuss the results and propose user group-specific design recommendations. [ABSTRACT FROM AUTHOR]

Abstract: 50 % of brain-damaged patients present with impaired neurovisual functions. This article presents Neuro Vision Training (NVT), the main functions of a new, AI-based software. These enable the diagnosis and therapy of neurovisual functions utilizing rapid eye movements (REM, saccades), slow eye movements, sensitivity in the visual field (contrast, color, movement), visual exploration, reading, visual multitasking, and working memory. NVT can be used by therapists in a clinic or therapy office as well as by patients at home. It enables hybrid therapy (practice and home) of neurovisual disorders and achieves a higher therapy intensity. At the same time, it mitigates the shortage of specialists, especially in rural areas. Numerous application examples demonstrate the benefits of the program in neurovisual rehabilitation. [ABSTRACT FROM AUTHOR]

The transmission of color experience has become a central concern in the development of devices for blind and visually impaired individuals. Several techniques have been implemented, taking into consideration other sensory modalities, in an attempt to find the most suitable solution to intersemiotically translate this visual information. The primary objective of this paper is to investigate various approaches to convey chromatic information for individuals with low vision or blindness and emphasize the importance of multi‐modal integration and cross‐modal interaction among different senses. This research brings together a wide variety of strategies utilized to translate color codes, such as patterns, temperatures, scents, music, and vibrations, with the aim of uncovering the advantages and disadvantages of each technique. A review of the existing literature suggests that interaction between multiple sensory channels is more effective in compensating for lack of vision. As a particularly relevant case study, attention will be paid to the enjoyment of art by people with visual impairments. [ABSTRACT FROM AUTHOR]

Purpose: Despite the benefits of vision rehabilitation services (VRS) for uveitis patients, limited literature has examined issues in VRS access within uveitis. We surveyed American Uveitis Society members regarding VRS referral practices, criteria, and barriers. Methods: Survey responses were collected from November 2022 to January 2023. Analysis summarized responses and compared response patterns of frequently-referring and infrequently-referring providers through Fisher's exact tests and logistic regression. Results: Most of the 33 respondents completed 1 to 5 monthly referrals using criteria of visual acuity loss, visual field loss, and difficulty performing vision-related activities. Key referral barriers included cost of services and insufficient patient-provider communication regarding vision loss. The practice of speaking to patients about vision loss during clinic visits was correlated with higher VRS referral rates (P = 0.047). Conclusions: Greater patient-provider communication about vision loss may represent an opportunity to increase access to VRS. [ABSTRACT FROM AUTHOR]

Objective: Low-vision quality-of-life (LVQOL) questionnaire was recently translated to Persian. Its model fit and construct validity were assessed by exploratory and confirmatory analysis for adults with visual impairment, before. In this study, we aimed to test the reliability of the Persian LVQOL questionnaire based on Rasch analysis. Methods: Overall, 100 low-vision patients and 100 demographic statue-matched control subjects were participated for evaluating reliability aspects. All the participants were asked to complete the Persian LVQOL questionnaire. The low-vision group was asked to fill out the LVQOL 3 months after rehabilitation to determine how rehabilitation changed the quality of life. Rasch analyses of the survey items were conducted using WINSTEPS. Results: All items fitted the Rasch model. Point-measure correlations values varied from.13 to.70, providing a preliminary indication of adequate construct validity. All factor loadings found more than.4. infit values for all other participants were in the acceptable range. All items obtained infit and outfit MSQ values of < 2.0. Patients' abilities relative to the item difficulty were analyzed. Item difficulty was estimated and item characteristic curves were included. Sufficient unidimensionality, hierarchical order, and equal interval scaring were obtained. Conclusion: The Persian LVQOL questionnaire was reliable enough and it will be valuable in both clinical practice and research. [ABSTRACT FROM AUTHOR]

Most of the vision quality assessment questionnaires are in English. None of the low-vision-related quality-of-life questionnaires have been translated or developed in Persian. It will help Persian optometrists and ophthalmologists to assess improvement of visual function and quality of life during their low-vision rehabilitation programs. In this study, we aimed to translate the low-vision quality-of-life (LVQOL) questionnaire in Persian language and apply exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) to assess the construct validity and fit model. Translation and cultural adjustment of the English language LVQOL questionnaire to Persian was undertaken. Overall, 100 low-vision patients were participated to validate and model the assessment questionnaire by both EFA and CFA methods. Complementary EFA and CFA results provide detailed information about item and scale performance of the Persian LVQOL. EFA showed Items 15, 16, and 21 which had factor loadings lower than 0.3. The modified model had the comparative fit index (CFI) and root mean square error of approximation (RMSEA) of 0.89 and 0.06, respectively. The translation, adjustment, and fit analysis of the LVQOL questionnaire into Persian were successful and it will be valuable in both clinical practice and research. [ABSTRACT FROM AUTHOR]

Sometimes even with the best efforts by the eye care worker (ECW), patients cannot be stopped from losing vision even in the best of centers anywhere in the world. However, in developing countries, most vision loss happens in rural and suburban areas away from where ECWs are majorly located due to poor facilities, adverse living conditions, and poverty. Once irreversible blindness happens, rehabilitation should follow. However, the numbers of those who are not referred for rehabilitation by far outstrips those who are, for various reasons. To find out why this is so, 150 ECWs with 1:2 M:F ratio were contacted through Google links sent through WhatsApp groups. Glaucoma was statistically the commonest cause of irreversible blindness (χ2 = 66.17, p -value <.0001) mostly from late presentation (n = 146 of 150 responses, 97.7%). When patients go blind, most (n = 132, 87.4%) of the ECW advise them to go to a blind school (81.2%). Only about a quarter of the respondents properly ensure that they go. A third admitted (n = 78, 39%) that knowing the patients personally improved their willingness to refer. Many do not think the government is doing enough to help the blind (n = 118, 78.7%). Even though many ECWs have given sensitization talks on blindness (124 of 164 responses), very few focus on what happens after blindness occurs (42.4% of respondents). A third of the ECW admitted to not doing enough for the blind in their practice (n = 51, 34%). Majority have, however, heard about The Lens Eye Clinic (TLEC) rehab center, one of the foremost rehabilitation centers for the blind in Nigeria (n = 103, 68.7%). ECW should ensure those who live in rural areas have poor socioeconomic background, less educated, female, elderly, or born blind should have regular screening and awareness programs in the areas of practice to catch the condition on time with provision made for early counseling and support services. [ABSTRACT FROM AUTHOR]

The prevalence of low vision is expected to increase at the national and international levels, given the aging population and the association between the prevalence of ocular disease(s) and increasing age. Thus, it is important to establish knowledge of the distribution, adequacy, and quality of available low vision rehabilitation services nationally and internationally. This will in turn help prioritize eyecare plans and initiatives, and thus deliver effective services. This cross-sectional study enumerated and surveyed all local government and information regarding the geographic location of each participating entity, entity affiliation, availability and types of low vision rehabilitation services, types of providers, and referral patterns were determined. The results of the current study showed that only 4% of the entities provided low vision rehabilitation services and most (75%) were located in the central region. Additionally, the majority of the services (95%) were basic optometric rehabilitation services whereas other services were either rarely offered or not offered at all. Overall, the current low vision rehabilitation services in Saudi Arabia are inadequate to meet the increasing prevalence of the low vision population. Thus, careful planning of eyecare services is required to meet this demand. [ABSTRACT FROM AUTHOR]