Table 2 Classification of measured habitual VA among all students.
From: Habitual visual acuity and visual acuity threshold demands in Nigerian school classrooms
Terminology | WHO classification (LogMAR) | Distance VA number (%) | Near VA number (%) | ||||
|---|---|---|---|---|---|---|---|
RE | LE | Binocular | RE | LE | Binocular | ||
Mild or no VI | ≤ 0.50 | 2201 (98.50) | 2208 (98.80) | 2216 (99.20) | 2217 (99.20) | 2217 (99.20) | 2223 (99.51) |
Moderate VI | 0.52–1.0 | 31 (1.40) | 24 (1.10) | 16 (0.70) | 15 (0.70) | 15 (0.70) | 10 (0.45) |
Severe VI | 1.02–1.30 | – | – | – | 2 (0.10) | 2 (0.10) | 1 (0.04) |
Blindness | 1.32–1.80 | 2 (0.10) | 2 (0.10) | 2 (0.10) | – | – | – |
Total | 2234 | 2234 | 2234 | 2234 | 2234 | 2234 | |
