12 results on '"Guy S. Negretti"'
Search Results
2. Survival analysis following enucleation for uveal melanoma
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Sarega Gurudas, Sobha Sivaprasad, Beatrice Gallo, Guy S. Negretti, Bertil Damato, Amit K. Arora, and Mandeep S. Sagoo
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Oncology ,medicine.medical_specialty ,education.field_of_study ,Monosomy ,medicine.diagnostic_test ,business.industry ,Mortality rate ,Enucleation ,Population ,medicine.disease ,Ophthalmology ,Fine-needle aspiration ,Internal medicine ,Biopsy ,medicine ,Cumulative incidence ,education ,business ,Survival analysis - Abstract
OBJECTIVES To determine survival outcomes following enucleation for uveal melanoma. To compare these outcomes with the 8th edition AJCC classification and determine the influence of cytogenetics, using Fluorescent in situ Hybridisation (FISH), on survival. To determine whether failure to gain sufficient sample for cytogenetics using Fine Needle Aspiration Biopsy (FNAB) correlates with survival. SUBJECTS/METHODS All patients undergoing primary enucleation for uveal melanoma at Moorfields Eye Hospital between 2012 and 2015 were included. Clinical, pathological, cytological and survival data were analysed for all patients. RESULTS In total, 155 subjects were included. Mean age at enucleation was 65.9 years (SD 14.13). 88 (56.8%) patients died at a mean of three (SD 1.9) years following enucleation. Of these, 52 (33.5%) died from metastatic melanoma, 16 (10.3%) from other causes and 20 (12.9%) causes of death were unknown. Cumulative incidence analysis demonstrated AJCC grade, chromosome 8q gain and monosomy three all predict metastatic mortality. The greatest 5-year mortality rate (62%, SD10.1%) was in those with both chromosome abnormalities and AJCC stage III (Stage IV patients excluded due to low numbers). Largest basal diameter and chromosome status, both independently (p = 0.02 and p
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- 2021
3. The natural history of conjunctival naevi in children and adolescents
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Victoria M L Cohen, Sahar Parvizi, Mandeep S. Sagoo, Guy S. Negretti, Kelsey A. Roelofs, and Bertil Damato
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Adult ,medicine.medical_specialty ,Skin Neoplasms ,Adolescent ,Conjunctival Neoplasms ,Article ,Eye cancer ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Interquartile range ,Biopsy ,medicine ,Humans ,Eye manifestations ,Child ,Melanoma ,Nevus, Pigmented ,medicine.diagnostic_test ,business.industry ,Outcome measures ,Mean age ,Dermatology ,Adolescent population ,Ocular oncology ,Natural history ,Ophthalmology ,030221 ophthalmology & optometry ,business ,Conjunctiva ,Conjunctival Melanoma ,030217 neurology & neurosurgery - Abstract
Objective The objective of this study is to characterise the natural history of conjunctival naevi in a paediatric and adolescent population. Methods All children and adolescents referred to Moorfields Ocular Oncology Service for evaluation between January 2015 and 2020 were included. Exclusion criteria included age >20 years old and lack of anterior segment photographs. A total of 77 patients were included with a mean age of 12 years (standard deviation: 3.9; range, 4-20). The main outcome measures were: number of conjunctival naevi that grew, changed in pigmentation, required excisional biopsy, or were histologically malignant. If there was growth, the percentage increase in size was measured. Results At their first visit, 13% of patients (10/77) were discharged to local follow-up and 10% (8/77) proceeded to excisional biopsy, four further patients underwent excisional biopsy after a period of follow-up. On histopathological assessment, 92% (11/12) of lesions were benign conjunctival naevi. One patient, who had suspicious clinical features at presentation, had conjunctival melanoma. Fifty-nine patients were followed over a median of 1.1 years (interquartile range: 1.54; range, 3 months to 4 years). Eight per cent (5/59) of conjunctival naevi enlarged in diameter by a mean percentage increase in size of 2%, whereas 5% (3/59) showed increased pigmentation and 8.5% (5/59) showed decreased pigmentation. Conclusions Growth of conjunctival naevi in children is infrequent (8%) and the large majority of those excised are benign. Because of a lack of evidence, these patients are often followed for years in ophthalmic practice. This series demonstrates that prolonged follow-up may not be necessary.
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- 2020
4. Long-term visual outcomes after ruthenium plaque brachytherapy for posterior choroidal melanoma
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Roderick F J, O'Day, Kelsey A, Roelofs, Guy S, Negretti, Gordon, Hay, Amit K, Arora, Ian, Stoker, Bertil E, Damato, Mandeep S, Sagoo, and Victoria M L, Cohen
- Abstract
To assess the long-term visual outcomes in patients with posteriorly located choroidal melanoma treated with ruthenium plaque brachytherapy between January 2013 and December 2015.A retrospective review was conducted on consecutive patients treated with ruthenium plaque brachytherapy for post-equatorial choroidal melanoma with available Snellen visual acuity before and after treatment, and the development and treatment of radiation complications.There were 219 patients with posterior choroidal melanoma treated with ruthenium plaque brachytherapy. Median follow up was 56.5 months, range 12-81 months. Final visual acuity was ≥6/12 in 97 (44.3%) patients, 6/12 to 6/60 in 57 (26.0%),6/60 in 55 (25.1%) and 10 (4.6%) eyes were enucleated. Radiation maculopathy was the most common radiation complication encountered, occurring in 53 (24.2%) patients. Of these, final visual acuity was 6/12 in 10 patients (18.9%), 6/12 to 6/60 in 26 (49.1%),6/60 in 16 (30.2%) and 1 eye (1.9%) was enucleated. Twenty-five (47%) with radiation maculopathy were treated with intravitreal anti-angiogenic therapy, 27 (51%) were monitored and one (2%) was treated with scatter photocoagulation. Eyes treated with intravitreal anti-angiogenic therapy had better final vision than those observed or treated with retinal laser (chi-square, p = 0.04). On multivariate analysis, close proximity to the optic nerve and fovea, and large or notched plaque type was associated with final vision worse than 6/12.Most patients treated with ruthenium plaque brachytherapy for posterior choroidal melanoma retain 6/60 vision, with almost half retaining 6/12 vision at long term follow up.
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- 2021
5. Adjuvant External Beam Radiotherapy Following Enucleation of Eyes With Extraocular Extension From Uveal Melanoma
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Bertil Damato, P. Nicholas Plowman, Mandeep S. Sagoo, Victoria M L Cohen, Amit K. Arora, Guy S. Negretti, Kelsey A. Roelofs, Roderick O'Day, and Gordon Hay
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Uveal Neoplasms ,medicine.medical_specialty ,medicine.medical_treatment ,Enucleation ,Eye Enucleation ,03 medical and health sciences ,0302 clinical medicine ,Median follow-up ,Interquartile range ,medicine ,Humans ,External beam radiotherapy ,Melanoma ,Survival analysis ,Aged ,Retrospective Studies ,Aged, 80 and over ,business.industry ,Retrospective cohort study ,General Medicine ,Middle Aged ,Surgery ,Radiation therapy ,Ophthalmology ,030221 ophthalmology & optometry ,Radiotherapy, Adjuvant ,business - Abstract
Purpose To report local disease control and all-cause mortality in patients with extraocular extension (EOE) of uveal melanoma undergoing enucleation followed by observation or external beam radiotherapy (EBRT). Methods Charts of patients enucleated between January 1, 1997 and December 31, 2019, with histopathological evidence of EOE of uveal melanoma were reviewed. Results The cohort comprised 51 patients with a mean age of 67 ± 15 years, 22 (43%) of whom underwent adjuvant postenucleation EBRT. Risk factors for metastasis included presence of epithelioid cells (29/45; 88%), closed loops (20/43; 47%), monosomy 3 (16/25; 64%), and gain of 8q (20/22; 91%). Patients undergoing EBRT had more extensive EOE (median: 5.1 mm vs. 2.6 mm, p = 0.008) and surgical excision was less likely to be histologically complete (2/20; 10% vs. 14/25; 56%, p = 0.002). Local side effects following EBRT were seen in 64% (14/22). At latest follow up, 59% of patients (30/51) were alive, with a median follow up of 1.8 years (interquartile range: 2.9; range: 0.1-6.5]. By Kaplan-Meier survival analysis, the 5- and 10-year overall survival rates were 56% and 12%, respectively. There was no difference in all-cause mortality between those receiving adjuvant EBRT and those who were observed (log rank, p = 0.273). No cases of orbital recurrence were documented. Conclusions Orbital EBRT causes significant morbidity. Cases with relatively small EOE undergoing enucleation can be safely observed, without adjuvant EBRT. Multicenter studies are required to better assess the role of EBRT when EOE is more extensive.
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- 2020
6. Vitrectomy for endophthalmitis: 5-year study of outcomes and complications
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Guy S. Negretti, Carlos Pavesio, WengOnn Chan, and Mahiul Muhammed Khan Muqit
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medicine.medical_specialty ,retina ,Visual acuity ,medicine.medical_treatment ,Vitrectomy ,treatment surgery ,03 medical and health sciences ,0302 clinical medicine ,Endophthalmitis ,lcsh:Ophthalmology ,medicine ,Trabeculectomy ,Macular hole ,Evisceration (ophthalmology) ,Original Research ,business.industry ,Retinal detachment ,Phacoemulsification ,medicine.disease ,infection ,Surgery ,Ophthalmology ,lcsh:RE1-994 ,inflammation ,030221 ophthalmology & optometry ,medicine.symptom ,business ,030217 neurology & neurosurgery - Abstract
Background/AimsTo analyse the complications and outcomes of vitrectomy surgery for endophthalmitis.MethodsThis was a retrospective case series. All cases that underwent 23-gauge vitrectomy surgery for endophthalmitis at a tertiary centre between 1 February 2013 and 1 February 2018 were included. Main outcome measures were as follows: visual acuity (VA) at final visit and post-vitrectomy complications.Results33 patients were included in the study with 20 men and 13 women, average age 63 years. Main post-surgical causes for endophthalmitis included phacoemulsification (n=9), trabeculectomy (n=5), intravitreal injection (n=5), corneal graft (n=4), vitreoretinal surgery (n=3) and endogenous endophthalmitis (n=6). Average follow-up was 18 months (SD 14). 21/33 (64%) patients had baseline perception of light VA. Analysis of exogenous endophthalmitis cases only demonstrated: mean LogMAR VA improved significantly from 2.68 to 1.66 (p=0.001). At final follow-up, 12% had VA of 6/12 or better, and 28% had VA of 6/36 or better. Vitrectomy within 7 days resulted in improved final VA outcomes (1.49 vs 2.16 LogMAR, p=0.032). Complications included retinal detachment (24.2%), macular hole (3%), hypotony (6%), suprachoroidal haemorrhage (3%) and enucleation/evisceration (6%).ConclusionVitrectomy for endophthalmitis leads to VA gains in some cases. Surgical outcomes may be improved with early vitrectomy performed within 7 days of the initial event for exogenous endophthalmitis. Patients should be advised of the potential risk of severe complications with/and without surgery.
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- 2020
7. Artisan iris-claw intraocular lens implantation in vitrectomised eyes
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Guy S. Negretti, Weng Onn Chan, and Mahiul M. K. Muqit
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medicine.medical_specialty ,Visual acuity ,genetic structures ,medicine.medical_treatment ,Glaucoma ,Intraocular lens ,Aphakia ,Article ,03 medical and health sciences ,0302 clinical medicine ,Postoperative Complications ,Lens Implantation, Intraocular ,Ophthalmology ,medicine ,Humans ,Iris claw ,Retrospective Studies ,Lenses, Intraocular ,business.industry ,CORNEAL OEDEMA ,Surgical correction ,medicine.disease ,eye diseases ,030221 ophthalmology & optometry ,sense organs ,medicine.symptom ,Complication ,business ,030217 neurology & neurosurgery ,Follow-Up Studies - Abstract
OBJECTIVES: To present the visual acuity (VA) results and complication rates following Artisan intraocular lens (IOL) insertion in vitrectomised eyes. METHODS: Outcome data were collected for all vitrectomised patients who had undergone Artisan IOL insertion between January 2014 and May 2019 at Moorfields Eye Hospital. All those with follow-up greater than 2 months were included in the analysis. RESULTS: Sixty-nine eyes from 61 patients were included. Average follow up was 2 years. Fifty-five (80%) eyes had at least one ocular comorbidity prior to Artisan IOL insertion. At final follow up 46 (67%) eyes had best-corrected VA better than 6/12. Sixty-three eyes (91%) either gained or maintained VA. Mean post-operative spherical equivalent was −0.2D. Two (3%) lenses became de-enclavated requiring further surgery. Two (3%) eyes developed acute post-operative cystoid macular oedema. Two (3%) required additional topical IOP-lowering therapy to their pre-operative glaucoma regimen. One eye had mild corneal oedema, which persisted for 1 year following surgery and subsequently resolved. CONCLUSIONS: Artisan IOL insertion is a safe and effective option for the surgical correction of aphakia in vitrectomised eyes lacking capsular support. Refractive results comparable to posterior chamber IOL placement can be achieved with these lenses.
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- 2019
8. Detecting Progression of Treated Choroidal Melanomas: Is Ultrasonography Necessary?
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Bertil Damato, Gordon Hay, Amit K. Arora, Umiya Harley, Guy S. Negretti, and Mandeep S. Sagoo
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Choroidal melanoma ,Cancer Research ,medicine.medical_specialty ,recurrence ,genetic structures ,medicine.medical_treatment ,Article ,Treatment failure ,Optical coherence tomography ,Medicine ,RC254-282 ,long-term surveillance ,imaging modalities ,medicine.diagnostic_test ,business.industry ,Fundus photography ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,eye diseases ,Radiation therapy ,Autofluorescence ,Oncology ,Cohort ,sense organs ,Radiology ,uveal melanoma ,Ultrasonography ,business - Abstract
Simple Summary Long-term surveillance following radiotherapy for choroidal melanoma is important for detecting recurrence. There is a perceived notion that regular ultrasonography is required to detect recurrence. The skills required to perform ocular ultrasound are not widely available, which can prevent patients being seen close to home. We aimed to determine whether local treatment failure can reliably be detected with colour fundus photography alone. We found that in 74 out of 75 patients (98.7%), with a clear view of their fundus, recurrence could be detected using colour photography alone. One patient with a clear fundal view developed extraocular extension which was detected on ultrasound without visible change in the intraocular part of the tumour. We conclude that most treated choroidal melanomas can be monitored without ultrasonography if they can be adequately imaged with colour photography. Abstract Prompt detection and treatment of local treatment failure after radiotherapy for choroidal melanoma optimises any opportunities for conserving vision and the eye, possibly reducing an increased risk of metastatic disease. Long-term surveillance is therefore required but is hampered by the perceived need to perform ultrasonography, which may not be available at a patient’s local hospital. The aim of this study was to determine whether local treatment failure can reliably be detected with colour fundus photography alone, and, if so, in which patients. Patients were included in the study if diagnosed with local treatment failure between April 2016 and February 2021 after eye-conserving therapy for choroidal melanoma. Wide-field colour and fundal autofluorescence (FAF) images, optical coherence tomography (OCT), and ultrasonography (US) were analysed by two of the authors (GN and UH). The cohort included 87 patients with local treatment failure. In 75 patients with clear media, tumour progression was detected by colour photography alone in 74 (98.7%) patients. Sensitivity was not increased by the addition of either OCT or AF. One patient with clear media developed extraocular extension detected with US without visible change in the intraocular part of the tumour. In the other 12 patients, US was required because of opaque media and a consequently poor fundal view. Local treatment failure after radiotherapy for choroidal melanoma is detected in 98.7% of cases with colour photography when the media are clear. Ultrasonography is useful when photography is prevented by opaque media or tumours having locations in the far periphery.
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- 2021
9. Anterior chamber lens implantation in vitrectomised eyes
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David G. Charteris, R Walker, Guy S. Negretti, M Lai, and Petros Petrou
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Adult ,Male ,Intraocular pressure ,medicine.medical_specialty ,Visual acuity ,genetic structures ,Anterior Chamber ,medicine.medical_treatment ,Visual Acuity ,Intraocular lens ,Vitrectomy ,03 medical and health sciences ,Postoperative Complications ,0302 clinical medicine ,Lens Implantation, Intraocular ,Ophthalmology ,Anterior chamber lens ,medicine ,Humans ,Intraocular Pressure ,Aged ,Aphakia ,Retrospective Studies ,Lenses, Intraocular ,Postoperative cystoid macular oedema ,Corneal Decompensation ,business.industry ,Middle Aged ,eye diseases ,Clinical Study ,030221 ophthalmology & optometry ,Female ,sense organs ,medicine.symptom ,Complication ,business ,030217 neurology & neurosurgery - Abstract
PURPOSE: To investigate long-term visual acuity (VA) outcomes and complication rates in vitrectomised eyes undergoing anterior chamber intraocular lens (ACIOL) insertion. PATIENTS AND METHODS: A single-centre, retrospective case series including all patients who had undergone ACIOL placement at the time of vitrectomy surgery or having had previous vitrectomy, between January 2007 and January 2013. Patients were identified using an electronic database and paper casefile notes were analysed for all patients. Patients were excluded if they had
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- 2017
10. Ethnic variation in primary idiopathic macular hole surgery
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Philip J Banerjee, N Kumar, Louisa Wickham, Guy S. Negretti, M Lai, Danny Mitry, H Flayeh, and Aman Chandra
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Adult ,Male ,Pars plana ,medicine.medical_specialty ,genetic structures ,medicine.medical_treatment ,Vitrectomy ,Risk Assessment ,Ophthalmic pathology ,Neuro-ophthalmology ,03 medical and health sciences ,Postoperative Complications ,0302 clinical medicine ,Risk Factors ,London ,Ethnicity ,medicine ,Humans ,Risk factor ,Macular hole ,Aged ,Retrospective Studies ,business.industry ,Incidence ,Middle Aged ,Retinal Perforations ,medicine.disease ,Surgery ,Ophthalmology ,Treatment Outcome ,medicine.anatomical_structure ,Cohort ,Clinical Study ,030221 ophthalmology & optometry ,Female ,Tamponade ,business ,geographic locations ,030217 neurology & neurosurgery - Abstract
PurposeThe purpose of the study was to investigate the role of ethnicity on idiopathic macular holes (IMH) structure and surgical outcome. This was a retrospective review.Patients and methodsConsecutive patients undergoing primary IMH surgery at two surgical sites of Moorfields Eye Hospital (London, UK) between April 2012 and June 2013. The main outcome measure was post surgical anatomical closure of IMH.ResultsTwo hundred and twenty two primary IMH surgeries were undertaken. A standard procedure including pars plana vitrectomy, internal limiting membrane peeling, and gas tamponade was undertaken for all cases. 61.3% of patients were Caucasian, 21.2% were South Asian, and 16% were Afro-Caribbean. The mean minimum linear diameter (MLD) for our cohort was 434.6 mcm. Mean MLD was 395.3 mcm in Caucasian patients, 490.0 mcm in South Asians (P=0.006), and 491.4 mcm in Afro-Caribbeans (P=0.007). Regression analysis demonstrated that MLD and Afro-Caribbean ethnicity were independent significant risk factors for surgical failure (OR: 1.01, P0.001 and OR: 5.73, P=0.008, respectively).ConclusionSouth Asian and Afro-Caribbean patients present with larger IMH than Caucasians. In addition to IMH diameter, Afro-Caribbean ethnicity is an independent risk factor for surgical failure.
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- 2017
11. Isolated Uveal Amyloidoma in the Absence of Systemic Amyloidosis
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Guy S. Negretti, Caroline Thaung, and Mandeep S. Sagoo
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medicine.medical_specialty ,Amyloidoma ,medicine.diagnostic_test ,business.industry ,Biopsy ,Amyloidosis ,Choroid Diseases ,Systemic amyloidosis ,Ophthalmology ,X ray computed ,Proton Therapy ,Humans ,Medicine ,Female ,Radiology ,Tomography, X-Ray Computed ,business ,Aged - Published
- 2019
12. Does delay in referral of proliferative diabetic retinopathy from the diabetic eye screening programme lead to visual loss?
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Guy S. Negretti, C. Egan, L Webster, and R Amin
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Male ,medicine.medical_specialty ,Visual acuity ,Delayed Diagnosis ,Time Factors ,genetic structures ,Referral ,Vision Disorders ,Visual Acuity ,Glaucoma ,030209 endocrinology & metabolism ,Ophthalmic pathology ,Neuro-ophthalmology ,03 medical and health sciences ,0302 clinical medicine ,Vision Screening ,Ophthalmology ,medicine ,Humans ,Fluorescein Angiography ,Referral and Consultation ,Retrospective Studies ,Glycated Hemoglobin ,Diabetic Retinopathy ,medicine.diagnostic_test ,business.industry ,Retrospective cohort study ,Diabetic retinopathy ,Middle Aged ,medicine.disease ,Fluorescein angiography ,eye diseases ,030221 ophthalmology & optometry ,Clinical Study ,Female ,medicine.symptom ,business ,Tomography, Optical Coherence - Abstract
AimsTo ascertain the effect on visual acuity (VA) of a delay in Hospital Eye Service (HES) consultation for patients referred with proliferative diabetic retinopathy (PDR; R3) from the Diabetic Eye Screening Programme (DESP).MethodsAll patients referred to Moorfields Eye Hospital from DESP between April and December 2013 with a referral diagnosis of PDR in at least one eye were eligible. Screening programme VA was compared with VA at first HES appointment and final follow-up appointment. Reasons for any VA loss were noted.ResultsA total of 86 patients were included. Of these, 28 (33%) were seen in more than 4 weeks after their DESP referral. At first HES appointment, 39 (45%) patients were graded as having active PDR in at least one eye. Delay in referral did not significantly predict the likelihood of vision loss in all patients referred (χ(2), P=0.49) or in just those patients with a definitive HES diagnosis of active PDR (χ(2), P=1.00). In only 3 patients with active PDR was a delay in presentation thought to have led directly to VA loss.ConclusionsThere may be minimal short-term visual consequence in several weeks of delayed referral for many patients with a diagnosis of R3. However, the national guidance remains important. This is due to the occasional patient at very high risk of vision loss and the many gains for the patients in terms of time to properly assess medical and ocular conditions and counsel and consent them for treatment where necessary.
- Published
- 2015
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