Table 4 Changes of visual acuity (the proportion of VA worse than two lines) during follow up period.
Age (years) | M1 | M2 | M3 | M4 | M5 |
---|---|---|---|---|---|
40–49 | 0/46 (0%) | 1/138 (0.7%) | 3/12 (25%) | 1/2 (50%) | 1/1 (100%) |
50–59 | 0 (0%) | 4/79 (5.1%) | 15/32 (46.9%) | 9/15 (60%) | 6/9 (66.7%) |
60–69 | 0 (0%) | 3/38 (7.9%) | 22/37 (59.5%) | 15/19 (78.9%) | 11/14 (78.6%) |
⩾70 | 0 (0%) | 4/21 (19.0%) | 28/47 (59.6%) | 25/32 (78.1%) | 8/10 (80%) |
Total | 0/46 (0%) | 12/276 (4.3%) | 68/128 (53.1%) | 50/68 (73.5%) | 26/34 (76.5%) |