Table 9 Principal cause of presenting and best-corrected visual acuity< 20/63 in cataract-operated eyes. No. (%)
Principal cause | Presenting visual acuity | Best-corrected visual acuity | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ethnicity | IOL status | Total | Ethnicity | IOL status | Total | |||||||
Han | Bai | Yi | Aphakic | Pseudophakic | Han | Bai | Yi | Aphakic | Pseudophakic | |||
Refractive error/uncorrected aphakia | 22 (18.3) | 22 (32.8) | 22 (21.2) | 18 (27.3) | 48 (21.3) | 66 (22.7) | 8 (10.1) | 0 (0) | 2 (4.1) | 8 (15.4) | 2 (1.7) | 10 (5.8) |
Retinal disorder | 35 (29.2) | 15 (22.4) | 29 (27.1) | 15 (22.7) | 63 (28.0) | 78 (26.8) | 28 (35.4) | 14 (31.8) | 23 (46.9) | 13 (25.0) | 52 (43.4) | 65 (37.8) |
Age-related macular degeneration | 20 (16.7) | 8 (11.9) | 16 (15.4) | 6 (9.1) | 38 (16.9) | 44 (15.1) | 14 (17.7) | 8 (18.2) | 12 (24.5) | 6 (11.5) | 28 (23.3) | 34 (19.8) |
Macular epiretinal membrane | 2 (1.7) | 0 (0) | 1 (1.0) | 0 (0) | 3 (1.3) | 3 (1.0) | 1 (1.3) | 0 (0) | 1 (2.0) | 0 (0) | 2 (1.7) | 2 (1.2) |
Macular hole | 0 (0) | 1 (1.5) | 0 (0) | 0 (0) | 1 (0.4) | 1 (0.3) | 0 (0) | 1 (2.3) | 0 (0) | 0 (0) | 1 (0.8) | 1 (0.6) |
Retinal detachment | 3 (2.5) | 1 (1.5) | 3 (2.9) | 2 (3.0) | 5 (2.2) | 7 (2.4) | 3 (3.8) | 1 (2.3) | 3 (6.1) | 2 (3.8) | 5 (4.2) | 7 (4.1) |
Angiogenic retinopathy | 1 (0.8) | 0 (0) | 0 (0) | 0 (0) | 1 (0.4) | 1 (0.3) | 1 (1.3) | 0 (0) | 0 (0) | 0 (0) | 1 (0.8) | 1 (0.6) |
Diabetic retinopathy | 1 (0.8) | 0 (0) | 0 (0) | 0 (0) | 1 (0.4) | 1 (0.3) | 1 (1.3) | 0 (0) | 0 (0) | 0 (0) | 1 (0.8) | 1 (0.6) |
Proliferative vitreoretinopathy | 0 (0) | 0 (0) | 2 (1.9) | 2 (3.0) | 0 (0) | 2 (0.7) | 0 (0) | 0 (0) | 1 (2.0) | 1 (1.9) | 0 (0) | 1 (0.6) |
Retinitis pigmentosa | 2 (1.7) | 0 (0) | 1 (1.0) | 0 (0) | 3 (1.3) | 3 (1.0) | 2 (2.5) | 0 (0) | 1 (2.0) | 0 (0) | 3 (2.5) | 3 (1.7) |
Vitreous haze | 0 (0) | 2 (3.0) | 0 (0) | 2 (3.0) | 0 (0) | 2 (0.7) | 0 (0) | 2 (4.5) | 0 (0) | 2 (3.8) | 0 (0) | 2 (1.2) |
High myopic retinopathy | 6 (5.0) | 3 (4.5) | 6 (5.0) | 3 (4.5) | 11 (4.9) | 14 (4.8) | 6 (7.6) | 2 (4.5) | 5 (10.2) | 2 (3.8) | 11 (9.2) | 13 (7.6) |
Posterior capsule opacification | 30 (25.0) | 5 (7.5) | 38 (36.5) | 4 (6.1) | 69 (30.7) | 73 (25.1) | 12 (15.2) | 5 (11.4) | 11 (22.4) | 3 (5.8) | 25 (20.8) | 28 (16.3) |
Glaucoma | 12 (10.0) | 10 (14.9) | 5 (4.8) | 8 (12.1) | 19 (8.4) | 27 (9.3) | 11 (13.9) | 10 (22.7) | 4 (8.2) | 8 (15.4) | 17 (14.2) | 25 (14.5) |
Optic atrophy | 10 (8.3) | 8 (11.9) | 5 (4.8) | 13 (19.7) | 10 (4.4) | 23 (7.9) | 9 (11.4) | 8 (18.2) | 4 (8.2) | 12 (23.1) | 9 (7.5) | 21 (12.2) |
Corneal opacity/scar | 5 (4.2) | 1 (1.5) | 3 (2.9) | 4 (6.1) | 5 (2.2) | 9 (3.1) | 5 (6.3) | 1 (2.3) | 3 (6.1) | 4 (7.7) | 5 (4.2) | 9 (5.2) |
Pterygium | 2 (1.7) | 4 (6.0) | 1 (1.0) | 2 (3.0) | 5 (2.2) | 7 (2.4) | 2 (2.5) | 4 (9.1) | 0 (0) | 2 (3.8) | 4 (3.3) | 6 (3.5) |
Uveitis | 2 (1.7) | 0 (0) | 1 (1.0) | 1 (1.5) | 2 (0.9) | 3 (1.0) | 2 (2.5) | 0 (0) | 1 (2.0) | 1 (1.9) | 2 (1.7) | 3 (1.7) |
amblyopia | 1 (0.8) | 0 (0) | 0 (0) | 0 (0) | 1 (0.4) | 1 (0.3) | 1 (1.3) | 0 (0) | 0 (0) | 0 (0) | 1 (0.8) | 1 (0.6) |
Other cause | 1 (0.8) | 1 (1.5) | 0 (0) | 1 (1.5) | 1 (0.4) | 2 (0.7) | 1 (1.3) | 1 (2.3) | 0 (0) | 1 (1.9) | 1 (0.8) | 2 (1.2) |
Undetermined | 0 (0) | 1 (1.5) | 1 (1.0) | 0 (0) | 2 (0.9) | 2 (0.7) | 0 (0) | 1 (2.3) | 1 (2.0) | 0 (0) | 2 (1.7) | 2 (1.2) |
Total | 120 (100.0) | 67 (100.0) | 104 (100.0) | 66 (100.0) | 225 (100.0) | 291 (100.0) | 79 (100.0) | 44 (100.0) | 49 (100.0) | 52 (100.0) | 120 (100.0) | 172 (100.0) |