Population-based cross-sectional prevalence survey of diabetes and diabetic retinopathy in Sohag-Egypt, 2019.

Objectives: To determine the prevalence of diabetes mellitus (DM), prevalence of diabetic retinopathy (DR) and sight-threatening conditions among persons with DM aged 50 years and older in Sohag governorate in Upper Egypt.

Design: Population-based, cross-sectional survey using the standardised Rapid Assessment of Avoidable Blindness with the addition of the Diabetic Retinopathy module methodology.

Settings: Sohag governorate in Egypt where 68 clusters were selected using probability proportional to population size.

Population-based rapid assessment of avoidable blindness survey in Sohag governorate in Egypt.

Objectives: To determine the prevalence and causes of blindness and vision impairment, and the coverage and quality of cataract surgical services, among population aged 50 years and older in Sohag governorate in Egypt.

Design: A population-based cross-sectional survey using two-stage cluster random sampling following the rapid assessment of avoidable blindness methodology.

Setting: A community-based survey conducted by six teams of ophthalmologists, assistants and local guides.