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Abstract #84985 Published in IGR 21-1

Open-angle glaucoma in a rural and urban population in Eastern India-the Hooghly river glaucoma study

Paul C; Sengupta S; Banerjee S; Choudhury S
Indian Journal of Ophthalmology 2020; 68: 371-374

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PURPOSE: Glaucoma is the leading cause of irreversible blindness in the world. The current study aims to estimate prevalence, features, and associations of open angle glaucoma (OAG) in a rural and urban East Indian population. METHODS: This is a population based cross sectional study with two arms, rural (28 contiguous villages from 13 Gram Panchayats in Balagarh Police Station, Hooghly district) and urban (Kolkata). Individuals residing in the study area aged 40 years and above were included using multistage random cluster sampling. All subjects underwent a detailed ophthalmic examination at our base hospitals including applanation tonometry, ultrasound pachymetry, gonioscopy, and frequency doubling technology perimetry. The primary outcome was the prevalence of POAG (95% CI). Age and gender specific prevalence estimates were calculated. Multiple logistic regressions were used to analyze the risk factors. RESULTS: Data from 7128 and 6964 subjects aged 40 years or older from Kolkata city and Hooghly district, respectively were analyzed. In the urban population, 2.10% (95% CI: 1.99-2.21%) had POAG and 0.15% (95% CI: 0.13-0.17%) had secondary OAG. In the rural population, 1.45% (95% CI: 0.59-2.31%) had POAG and 0.10 ± 0.03% (95% CI: 0.07-0.13%) had secondary OAG. CONCLUSION: The study concludes that higher age, higher vertical cup disc ratio (VCDR), and lower central corneal thickness (CCT) are important independent predictors of OAG and emphasizes that increased intraocular pressure (IOP) is not POAG. Gonioscopy, disc evaluation, and screening perimetry need to be incorporated in the detection protocol for glaucoma if we intend to lighten the burden of blindness due to glaucoma.

B B Eye Foundation, Kolkata, West Bengal, India.

Full article

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Classification:

1.1 Epidemiology (Part of: 1 General aspects)
1.5 Glaucomas as cause of blindness (Part of: 1 General aspects)

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