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  5. FP0787 : Bright light testing in a dark room: The Real world Glare simulation challenge for central Cataracts

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Chief & Presenting Author: Dr.Puja Hingorani - Bang

Co Author(s): Dr.Vandana Akshay Iyer, Dr.Meghana Kandi, Dr.Samarpita Dhar

Abstract

Study design: Comparative observational study of loss of BCVA in dim vs simulated bright light
Purpose: Visual acuity in a dark room isn't representative of the glare effect experienced by patients with central cataract in bright light or night driving conditions.This study aims to measure the true disability experienced by such patients
Methods: An outdoor LED floodlight of 150 watts (Philips) was used to simulate bright light conditions in the refraction room.Patients diagnosed with posterior subcapsular cataracts but with Snellen's dark room BCVA of 6/18 or better were re-tested with undilated pupils in simulated bright light settings.The light source was supero-obliquely placed 4m in front of the patient.Snellen's acuity was re-assessed.Patients with pre-existing photophobia were excluded.
Results: Test subjects showed a significant drop of BCVA
Conclusion: Some cataract surgeries might need to be preponed to save the patients from the potential dangers of glare-induced visual loss