Search

Poor eye-health knowledge and health literacy are pervasive, contributing to worse outcomes. This study aims to examine short- and long-term eye-health knowledge retention following eye-health education interventions in adults. Vision Detroit was an outreach vision screening program that integrated a 5-Point Teaching Intervention (5PTI), at a Southwest Community Center (SW-CC) from 2015–2017. The 5PTI consists of eye-health learning points developed to verbally educate patients. During vision screenings, eye-health knowledge tests were administered before and after 5PTI (Test 1 and Test 2, respectively). In 2016, Community Eye-Health Education Interventions (CHEI) were initiated at the SW-CC. During CHEI, bilingual healthcare students taught voluntary SW-CC members the 5PTI learning points, regardless of participant interest to attend future screenings. CHEI sessions occurred on separate dates prior to vision screening events. Test 1 and Test 2 scores were compared for all participants. Test 1 scores were compared for those who underwent CHEI prior to vision screening (CHEI positive) versus those who did not (CHEI negative). Two-hundred-seventeen adult patients met inclusion criteria, with 75.8% women, 82.6% Hispanic, mean age 50.4 ± 16.2 years, 74.6% had high school or less education, and 49.2% had health insurance. Test 1 to Test 2 scores improved after 5PTI (71.2 ± 26.4% vs. 97.2 ± 9.9%, p <.00001). Forty-eight participants attended CHEI and subsequent vision screening. Test 1 scores were higher among those CHEI positive versus CHEI negative (81.1 ± 2.1% vs. 68.3 ± 3.4%, p =.0027). Simple eye-health education interventions, delivered during vision screenings and via community-based education, can improve eye-health knowledge. [ABSTRACT FROM AUTHOR]

Cataract surgery is the most common surgery performed in the European Union (EU) annually. Analysis of Google Trends (GT) data could give European eye care providers useful information regarding interest in cataract surgery and potential barriers making patients unwilling to undergo surgery. Data were collected using GT for cataract surgery and the two most related queries, for each of 14 included countries from January 2004 to December 2018. Case volumes were extracted from the Eurostat report for the calendar years 2004–2018. The most related queries analysis demonstrated surgery outcomes, founding issues and understanding of the disease as potential factors for patients considering cataract surgery. Trend analysis showed that the total search volumes for "cataract surgery" gradually increased over the study period. Also, for "cataract", "after cataract surgery", "cataract surgery NHF" rising trends were revealed. Trends found for "cataract surgery price" and "cataract surgery complications" were inconclusive. Univariate linear regression analysis demonstrated statistically significant correlations between average annual search volumes of "cataract surgery" and the annual volume of cataract surgeries performed in included countries, according to Eurostat data (R2 = 0.889, p = <.001). In addition, univariate linear regression analyses revealed similar, statistically significant correlation for each the most related queries. To the knowledge of the authors, this is the first and the only analysis of GT data in the ophthalmology literature to date. This study highlights this potentially powerful data set for European eye care providers. [ABSTRACT FROM AUTHOR]

Epidemiological information is expected to be used to develop key aspects of eye care such as to control and minimise the impact of diseases, to allocate resources, to monitor public health actions, to determine the best treatment options and to forecast the consequence of diseases in populations. Epidemiological studies are expected to provide information about the prevalence and/or incidence of eye diseases or conditions. To determine prevalence is necessary to perform a cross-sectional screening of the population at risk to ascertain the number of cases. The aim of this review is to describe and evaluate capture-recapture methods (or models) to ascertaining the number of individuals with a disease (e.g. diabetic retinopathy) or condition (e.g. vision impairment) in the population. The review covers the fundamental aspects of capture-recapture methods that would enable non-experts in epidemiology to use it in ophthalmic studies. The review provides information about theoretical aspects of the method with examples of studies in ophthalmology in which it has been used. We also provide a problem/solution approach for limitations arising from the lists obtained from registers or other reliable sources. We concluded that capture-recapture models can be considered reliable to estimate the total number of cases with eye conditions using incomplete information from registers. Accordingly, the method may be used to maintain updated epidemiological information about eye conditions helping to tackle the lack of surveillance information in many regions of the globe. [ABSTRACT FROM AUTHOR]

Purpose: To investigate the distribution of cataract surgery performed by ophthalmologists in China. Methods: A cross-sectional study was designed to investigate nationwide ophthalmological resources and capacity for cataract surgery in China⁠—The 2014 China National Eye Care Capacity and Resource Survey. Data analyzed in this report included regional distribution, urban-rural comparison, levels and types of medical institutions, and cataract surgery types and volume per surgeon. In China, only ophthalmologists at or above the level of attending are eligible to perform cataract surgery independently, so the ability of cataract surgery for ophthalmologists at or above the level of attending is analyzed in the current study. Descriptive statistics were used. Results: 36,333 ophthalmologists were included in this survey, which is an average of 1.33 ophthalmologists to every 50,000 population. Of the surgeons in this survey, 23,412 (50.22%) were attending or more senior ophthalmologists and were mainly distributed in eastern urban areas. Annual average cataract surgeries per ophthalmologist in China were 259 in 2017, less than 300 cases. Conclusion: The average number of ophthalmologists per population in China has achieved the goal of WHO's Vision 2020; however, these surgeons are concentrated in urban areas. Further, the ability of cataract surgery among ophthalmologists is unbalanced. The annual average cataract surgeries performed by ophthalmologists are insufficient, which is an important factor resulting in the current situation in China that ophthalmic service capacity has not met the requirements for eliminating cataract blindness. [ABSTRACT FROM AUTHOR]

Purpose: To evaluate current delivery of glaucoma care in Botswana; in particular, the service infrastructure available and glaucoma-related workload. Methods: A multi-center cross-sectional study was undertaken comprising government eye care institutions and ophthalmic personnel across Botswana. Data on human resources, equipment types and numbers, diagnostic criteria routinely used, treatments routinely provided, and new and repeat glaucoma consultations were obtained through quantitative and qualitative surveys. Results: In 27 government eye care institutions there were two general ophthalmologists, neither of whom had a subspecialty interest in glaucoma, 64 ophthalmic nurses, two optometrists, one low vision therapist, one refractionist, and two equipment technicians. Only 8.5% of available ophthalmic human resources were taken up with provision of glaucoma care. About 1/3 of hospitals did not have tonometers, most primary hospitals lacked slit lamp biomicroscopes and most hospitals lacked sensitive diagnostic equipment. A diagnosis of glaucoma was made by either an ophthalmic nurse or an ophthalmologist, but only 10% of institutions could meet recommendations for follow-up assessment. Topical glaucoma medications were prescribed by almost all hospital clinics, usually by ophthalmic nurses. Drug choices were largely determined by local availability. Glaucoma surgery accounted for 0.8% of total eye operations. Glaucoma patients took up 8.5% of total clinic visits. The total number of glaucoma visits was highest in the two hospitals with ophthalmologists. New glaucoma cases took up 10.3% of total glaucoma visits. Conclusion: This study highlights the challenges faced in caring for glaucoma patients in Botswana; in particular, lack of professional human resources, equipment and availability of effective treatments. [ABSTRACT FROM AUTHOR]

Purpose: To determine barriers to seeking eye care services in Timor-Leste in 2010, and compare this to similar analyses undertaken 5 years previously. Methods: An interview-based questionnaire used in a 2005 survey was re-administered as part of a population-based cross-sectional survey of adults selected by multistage random sampling from those aged ≥40 years in Timor-Leste in 2010. Results: The participation rate for the 2010 survey was 89.5% ( n = 2014). The sex-age-domicile-adjusted prevalence of a history of at least one previous or current ophthalmic problem in the population aged ≥40 years was 92.6% (95% confidence interval [CI], 91.4-93.7%). Of these, 75.4% (95% CI 73.4-77.3%) had not consulted a care provider. In multivariate analysis, rural domicile, illiteracy and subsistence farming were associated with having not sought care for an eye problem. The most frequently cited reasons were 'service too far away' (36.3%), 'no time/other priorities' (21.7%) and 'unaware of eye care service' (20.7%). More people reported a history of an eye problem in 2010 than in 2005, but the proportion seeking care was no different. Social barriers became more prevalent for urban dwellers in 2010, while attitudinal barriers decreased. For rural residents, social and service-related barriers increased and awareness and attitudinal barriers decreased. Conclusion: Barriers to eye health service use in Timor-Leste are not universal or static. Monitoring the extent and nature of barriers, as well as the prevalence and causes of vision impairment, will help plan appropriate interventions for vulnerable groups. [ABSTRACT FROM AUTHOR]

Purpose: To describe the trend of Acanthamoeba keratitis case reports following an outbreak and the recall of a multipurpose contact lens disinfection solution. Acanthamoeba keratitis is a serious eye infection caused by the free-living amoeba Acanthamoeba that primarily affects contact lens users. Methods: A convenience sample of 13 ophthalmology centers and laboratories in the USA, provided annual numbers of Acanthamoeba keratitis cases diagnosed between 1999-2009 and monthly numbers of cases diagnosed between 2007-2009. Data on ophthalmic preparations of anti- Acanthamoeba therapies were collected from a national compounding pharmacy. Results: Data from sentinel site ophthalmology centers and laboratories revealed that the yearly number of cases gradually increased from 22 in 1999 to 43 in 2003, with a marked increase beginning in 2004 (93 cases) that continued through 2007 (170 cases; p < 0.0001). The outbreak identified from these sentinel sites resulted in the recall of a contact lens disinfecting solution. There was a statistically significant (p ≤ 0.0001) decrease in monthly cases reported from 28 cases in June 2007 (following the recall) to seven cases in June 2008, followed by an increase (p = 0.0004) in reported cases thereafter; cases have remained higher than pre-outbreak levels. A similar trend was seen in prescriptions for Acanthamoeba keratitis chemotherapy. Cases were significantly more likely to be reported during summer than during other seasons. Conclusion: The persistently elevated number of reported cases supports the need to understand the risk factors and environmental exposures associated with Acanthamoeba keratitis. Further prevention efforts are needed to reduce the number of cases occurring among contact lens wearers. [ABSTRACT FROM AUTHOR]

Purpose: Current knowledge of ethnic variability in the epidemiology of major eye diseases in Asia is limited. This report summarizes the rationale and study design of the Singapore Indian Chinese Cohort (SICC) Eye Study, a population-based study of ethnic South Asian (Indians) and East Asian (Chinese) older adults in Singapore. Methods: The SICC examined a population-based cross-sectional sample of 3,300 ethnic Indians and 3,300 ethnic Chinese aged 40–80+ years residing in the South-Western part of Singapore. Results: From two lists of 12,000 names of each ethnic group provided by the Ministry of Home Affairs, age-stratified random sampling was used to select 6,350 names in each group, with a target sample size of 3,300. Invitations were sent to attend a central clinic using letters, telephone calls and home visits. Examination procedures included interviews, measurement of blood pressure, anthropometry, presenting and best-corrected visual acuity, subjective refraction, ocular biometry, Goldmann applanation tonometry, slit-lamp biomicroscopy, optic disc imaging and digital photography of the lens and retina, using a standardized protocol. Selected participants underwent gonioscopic examination, visual field testing, and anterior and posterior segment optical coherence tomography. Blood, tear, and urine samples were collected for biochemical analyses, and stored for genetic and proteomic studies. Conclusions: In conjunction with the Singapore Malay Eye Study, the SICC study will permit an in-depth evaluation of the prevalence, risk factors, and impact of major eye diseases in Chinese, Indians and Malays, three distinct Asian ethnic groups, whose combined numbers represent half the world’s population. [ABSTRACT FROM AUTHOR]

Background: Cataract surgery is the most frequently performed ophthalmic procedure worldwide. While benefits gained from cataract surgery outweigh surgical risks, there have been concerns that older persons may have an increased risk of developing age-related macular degeneration (AMD) after cataract surgery. Objective: The Australian Prospective Study of Cataract Surgery and Age-Related Macular Degeneration Study aims to assess the risk of AMD in a large cohort of older patients following cataract surgery. The current report describes the study rationale, design and methodology. Design: Longitudinal studyParticipants: Approximately 2000 cataract surgical patients aged 65 years or older are being recruited from both public and private sources in western Sydney, Australia.Methods: At study visits, participants are interviewed using standardized questionnaires to obtain information on demographic, medical, and ocular conditions and AMD risk factors, together with data on general health and vision-related quality of life. Eye examinations include visual acuity, intraocular pressure, keratometry and A-scan measurements, plus lens and retinal photography, following pupil dilatation. Retinal photographs taken before cataract surgery, and at 1, 6, 12, and 24 months after surgery are graded for early and late AMD lesions, using the Wisconsin age-related maculopathy grading system. The 1-month post-operative retinal photographs supplement the baseline macular assessment for cases in which cataract occludes a clear view of the macula pre-operatively. It is intended that study participants will be followed for up to five years post-operatively to clarify the question of whether aphakic or pseudophakic, compared to phakic eyes, have a greater risk of developing AMD. [ABSTRACT FROM AUTHOR]

Objective/Purpose: This survey was conducted to determine the effect on activities of daily living of persons who report that they have received vision rehabilitation. Design/Methodology: This study used a clinical sample to gather information from 417 patients. Of the 417, 105 reported receiving vision rehabilitation. The efficacy of rehabilitation was assessed by asking 20 questions about their activities of daily living prior to and after their rehabilitation. A retrospective pretest (post-then-pre) design was used. Paired t tests were conducted to evaluate the effect of rehabilitation. Results: A significant difference was found for 13 of 20 questions. Difficulty reading ordinary prints in newspapers showed a large effect size (p = 0.0005). Difficulty reading the small print in a telephone book showed a large effect size (p = 0.0005). Difficulty doing work or hobbies that require one to see up close showed a moderate effect size (p = 0.0005). Difficulty finding something on a crowded shelf showed a moderate effect size (p = 0.0005). Difficulty figuring out whether bills received are accurate showed a moderate effect size (p = 0.0005). Difficulty shaving, styling one's hair, or putting on makeup showed a small effect size (p = 0.016). Difficulties seeing and enjoying programs on television showed a moderate effect size (p = 0.0005). Conclusion: Patients with low vision who report having received vision rehabilitation show significant improvements in activities of daily living or specific types of functioning after rehabilitation. Improvement in both near and distance vision activities and in social activities indicates daily functioning was improved and that barriers to activities of daily living were removed. [ABSTRACT FROM AUTHOR]

Purpose: To determine if a community screening with Frequency Doubling Technology perimetry (FDT) results in a high proportion of follow-up with an eye care provider and the factors associated with follow-up. Design:Cross-sectional study. Setting: Telephone survey Methods: We conducted a telephone survey of participants with abnormal results 3-6 months after the community screening. Results: We were able to interview 121 participants (57% of 212 eligible subjects). Sixty-nine percent (83 of 121) of participants visited an eye care provider after the screening. Patients were more likely to attain an eye exam if they were female, older, or had an educational level of high school or more (p < 0.05). Of those participants who did not visit an eye care provider, 41% (18/38) did not believe the results of the test, 21% (8/38) reported not having insurance or an eye care provider, 11% (4/38) did not have time for an eye exam, and 11% (4/38) reported not knowing they needed to see an eye care provider. Conclusion: A community screening program with FDT encouraged more than two thirds of participants with abnormal results to seek an eye exam. The most common reason not to attain an eye exam was failing to recognize the importance of an abnormal test result. [ABSTRACT FROM AUTHOR]

Purpose: Evisceration is an alternative treatment modality to enucleation for many end-stage eye diseases. No study has addressed the indications for evisceration of eyes in Saudi Arabia. The aim of this study was to determine the current clinical indications for evisceration in patients at a tertiary eye care center and attempt clinicopathological correlation. Methods: Clinical records of patients who had undergone evisceration at a tertiary eye care center over a 4-year period were reviewed retrospectively. The patients' demographic data and clinical indications for evisceration were studied, and the results from histopathological findings were correlated with the clinical diagnosis. Results: Evisceration of the eyes was performed in 187 patients. Males outnumbered females in a ratio of 1.3:1 (105 males and 82 females). Blind painful eye was the primary presenting symptom in 117 (62.6%) patients and unsightly eye in 38 (20.3%) patients. Clinical indications for evisceration included endophthalmitis in 85 (45.5%), phthisis bulbi in 38 (20.3%), traumatic injury in 36 (19.2%), and glaucoma in 14 (7.5%) patients. Sixty-three patients (33.7%) had prior history of cataract surgery, penetrating keratoplasty, glaucoma surgery, or retina surgery. Clinicopathological correlation was 100% in cases with definite clinical diagnosis of endophthalmitis. Conclusion: Blind painful eye, endophthalmitis, phthisis bulbi, severe traumatic injury, and glaucoma were the major indications for eviscerations in a tertiary eye care center. [ABSTRACT FROM AUTHOR]