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Table 2 Prevalence of visual impairment and blindness among the subjects

From: Evaluating the effectiveness of opportunistic eye screening model for people with Diabetes attending Diabetes clinic at Mnazi Mmoja hospital, Zanzibar

Categories Presenting visual acuity n (%) 95% CI
Normal (6/6 – 6/18) 251 (70.5) 65.6 – 75.0
Moderate VI (<6/18 – 6/60) 72 (20.2) 16.4 – 24.7
Blind (<3/60 to no perception of light) 33 (9.3) 6.7 – 12.7
Total 356 (100)