Table 5

 Blindness prevalence in various studies from India

APEDSACESNPCBCurrent study
APEDS, Andhra Pradesh Eye Disease Study; ACES, Aravind Comprehensive Eye Survey; NPCB, National Programme for Control of Blindness.
Age group40 years and above40 years and above50 years and above40 years and above
Definition of blindnessPresenting visual acuity of <6/60 or central visual field <20° in the better eyeBest corrected visual acuity <3/60 in better eyeBest corrected visual acuity <3/60 in better eyeBest corrected visual acuity <3/60 and/or less than 10° field in the better eye
Study period1996–20001995–71999–20012001–3
Study populationUrban and ruralRuralUrban and ruralRural
Blindness (%) (95% CI)6.6 (5.8 to 7.4)1.0 (0.79 to 1.2)3.37 (3.16 to 3.58)3.36 (2.80 to 3.93)