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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)