Table 4.
Distribution of Patients by Visual Acuity (VA) of the Study Eye When Examined at Specified Times After Enrollment, SST Group H Trial
|
No. (%) of Study Eyes by Time After Enrollment by Treatment Arm |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
3 mo |
6 mo |
12 mo |
24 mo |
36 mo |
||||||
| VA (Snellen Equivalent) | Observation (n = 99) | Surgery (n = 107) | Observation (n = 99) | Surgery (n = 105) | Observation (n = 103) | Surgery (n = 106) | Observation (n = 97*) | Surgery (n = 103†) | Observation (n = 78) | Surgery (n = 90) |
| ≥20/40 | 12 (12) | 18 (17) | 11 (11) | 13 (12) | 8 (8) | 16 (15) | 10 (10) | 16 (16) | 10 (13) | 16 (18) |
| 20/50–20/80 | 28 (28) | 34 (32) | 26 (26) | 30 (29) | 23 (22) | 24 (23) | 15 (15) | 15 (15) | 10 (13) | 12 (13) |
| 20/100–20/160 | 29 (29) | 24 (22) | 23 (23) | 29 (28) | 21 (20) | 22 (21) | 15 (15) | 21 (20) | 13 (17) | 21 (23) |
| 20/200–20/320 | 18 (18) | 20 (19) | 25 (25) | 24 (23) | 27 (26) | 30 (28) | 31 (32) | 35 (34) | 24 (31) | 24 (27) |
| 20/400–20/640 | 9 (9) | 6 (6) | 9 (9) | 5 (5) | 11 (11) | 4 (4) | 13 (13) | 11 (11) | 11 (14) | 8 (9) |
| 20/800–20/1280 | 3 (3) | 3 (3) | 4 (4) | 2 (2) | 10 (10) | 6 (6) | 9 (9) | 4 (4) | 6 (8) | 3 (3) |
| ≤20/1600 | 0 | 2 (2) | 1 (1) | 2 (2) | 3 (3) | 4 (4) | 4 (4) | 1 (1) | 4 (5) | 6 (7) |
| Median VA, Snellen equivalent | 20/125 | 20/100 | 20/125 | 20/100 | 20/160 | 20/125 | 20/250 | 20/160 | 20/200 | 20/160 |
Abbreviation: SST, Submacular Surgery Trials.
*
Measurements of VA were made by masked examiners for 87 eyes (90%).
†
Measurements of VA were made by masked examiners for 94 eyes (91%).