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Table 5 Classification of participants with glaucoma by levels of evidence (as described in Table 2)

From: A Population-based survey of the prevalence and types of glaucoma in Nigeria: results from the Nigeria National Blindness and Visual Impairment Survey

 

Participants with glaucoma

Level of evidence

Number of participants

Number of eyes

Category 1

 VCDR

155 (22.7 %)

197 (20.8 %)

 VCDR asymmetry

113 (16.6 %)

113 (11.9 %)

 Total

268 (39.3 %)

310 (32.7 %)

Category 2

 VCDR

330 (48.4 %)

511 (53.8 %)

 VCDR asymmetry

43 (6.3 %)

43 (4.5 %)

 Total

373 (54.7 %)

554 (58.3 %)

Category 2b

5 (0.7 %)

10 (1.0 %)

Category 3

36 (5.3 %)

76 (8.0 %)

Total glaucoma

682 (100 %)

950 (100.0 %)

  1. VCDR vertical cup:disc ratio