Table 1 Existence and proportion of obscured area in each field of the Early Treatment Diabetic Retinopathy Study (ETDRS) 7- field
Number of ETDRS 7-field | ||||||||
|---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | 7 | All field | |
Optos | ||||||||
obscured eye N (%) | 8 (17) | 11 (24) | 20 (43) | 2 (4) | 36 (78) | 5 (11) | 35 (76) | 39 (85) |
obscured area, % | 0.22 ± 0.74 | 0.41 ± 0.95 | 1.55 ± 4.18 | 0.09 ± 0.47 | 6.57 ± 6.17 | 1.17 ± 4.75 | 9.52 ± 13.92 | 4.15 ± 4.00 |
Clarus | ||||||||
obscured eye N (%) | 0 (0) | 0 (0) | 0 (0) | 2 (4) | 1 (2) | 3 (7) | 2 (4) | 3 (7) |
obscured area, % | 0 | 0 | 0 | 0.13 ± 0.63 | 0.09 ± 0.64 | 1.35 ± 7.76 | 0.04 ± 0.31 | 0.47 ± 1.87 |