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. 2006 May;90(5):546–550. doi: 10.1136/bjo.2005.081992

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%)