Prevalence of blindness and visual impairment in a coastal region of Southern India: A cross-sectional survey in Prakasam district, Andhra Pradesh
Hemanth Kumar,
Hira Pant,
Sirshendu Chaudhuri
et al.
Abstract:Purpose:
To estimate the magnitude, determinants, and causes of visual impairment (VI) and blindness among people >40 years.
Methods:
In this cross-sectional survey, 2,968 people >40 years from 34 clusters were examined. A cluster random sampling method with a compact segment sampling technique was used to select the study participants. Prevalence of any VI (presenting visual acuity (PVA) <6/12 in better eye), severe VI (PVA <6/60 – 3/60), a… Show more
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