Effect age group on final visual outcome
| Age | Uncooperative | <1/60 | 1/60 to 3/60 | 20/200 to 20/120 | 20/80 to 20/60 | 20/40 to 20/20 | Total |
| n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | |
| 0–10 | 9 (1.31) | 46 (6.69) | 15 (2.18) | 12 (1.74) | 37 (5.38) | 34 (4.94) | 153 (22.27) |
| 11–20 | 2 (0.29) | 30 (4.36) | 14 (2.03) | 17 (2.47) | 33 (4.80) | 87 (12.66) | 183 (26.63) |
| 21–30 | 2 (0.29) | 19 (2.76) | 8 (1.16) | 6 (0.87) | 12 (1.74) | 42 (6.11) | 89 (12.95) |
| 31–40 | 1 (0.14) | 23 (3.35) | 5 (0.73) | 7 (1.01) | 16 (2.32) | 25 (3.63) | 77 (11.2) |
| 41–50 | 3 (0.43) | 23 (3.35) | 6 (0.87) | 12 (1.74) | 28 (4.07) | 22 (3.20) | 94 (13.68) |
| 51–60 | 0 (0.0) | 21 (3.00) | 7 (1.01) | 6 (0.87) | 8 (1.16) | 11 (1.60) | 53 (7.71) |
| 61–70 | 0 (0.0) | 8 (1.16) | 0 (0) | 2 (0.29) | 10 (1.45) | 2 (0.29) | 22 (3.20) |
| 71–80 | 0 (0.0) | 1 (0.14) | 0 (0) | 2 (0.29) | 1 (0.14) | 0 (0) | 4 (0.58) |
| Total | 17 (2.47) | 173 (25.18) | 55 (8.00) | 64 (9.31) | 146 (21.25) | 223 (32.45) | 675 (98.5) |
χ2 test, p=0.000.