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. 2021 Jul;41(7):2359-2368.
doi: 10.1007/s10792-021-01789-y. Epub 2021 Mar 21.

Outcomes of neovascular glaucoma in eyes presenting with moderate to good visual potential

Padmaja Kumari Rani  1 , Piyali Sen  2 , Niroj Kumar Sahoo  3 , Sirisha Senthil  4 , Renuka Chakurkar  3 , Manju Anup  5 , Umesh Chandra Behera  6 , Sobha Sivaprasad  2 , Taraprasad Das  3 ; India Retinal Disease Study Group
Affiliations

Outcomes of neovascular glaucoma in eyes presenting with moderate to good visual potential

Padmaja Kumari Rani et al. Int Ophthalmol. 2021 Jul.

Abstract

Purpose: To compare the disease characteristics and treatment outcomes of patients with neovascular glaucoma (NVG) presenting with visual acuity (VA) 6/60 or better in two different health systems.

Methods: Retrospective chart review of consecutive patients with NVG who presented between January 2016 to January 2018 in 5 tertiary-centres in India and one eye-specialist centre in London (UK) was performed. The baseline characteristics, treatment provisions, and visual outcomes in the India and UK cohorts were compared.

Results: At presentation, 18% (83 of 451) and 22% (59 of 270) of patients with NVG had VA 6/60 or better in India and the UK cohorts, respectively. The aetiologies of NVG were similar with proliferative diabetic retinopathy being the most common cause (60.9%, India; 64.4%, UK; p = 0.38). Previous panretinal photocoagulation was more prevalent in the UK cohort compared to the India cohort (94.9% versus 66.3%, respectively; p < 0.001). The mean number of intravitreal anti-VEGF injections per eye was higher in the Indian cohort (1.65 ± 0.97 versus 1.14 ± 1.02 injections; p < 0.001). The number of eyes with closed angles (36.9% India versus 30.5% UK; p = 0.45) and the number of eyes needing glaucoma interventions (52.1% India; 62.7% UK; p = 0.82) were similar in two cohorts. Among glaucoma surgeries, trabeculectomies were more commonly performed in the Indian cohort (23 vs 4; p < 0.001),while glaucoma drainage device surgeries were more prevalent in the UK cohort (18 vs 4 p < 0.001). After a median follow-up of 21 months (IQR 8.4-34.8 India; 24-36 months UK), favourable visual outcomes (vision stable or improved) were similar in both health systems (52.5% in the Indian cohort vs 43.4% in the UK cohort; p = 0.28). On multivariate regression analysis, the need for trans-scleral cyclophotocoagulation was associated with worse visual outcomes in both cohorts.

Conclusions: The causes and clinical profile of neovascular glaucoma with presenting visual acuity 6/60 or better in India and the UK were similar. Only up to 50% of eyes achieved favourable visual outcomes with current management protocols in both health systems.

Keywords: Neovascular glaucoma; Outcomes; Visual potential.

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