Table 4.
Primary Cause of Visual Impairment in All Cataract-Operated Eyes
| Visual Impairment [n (%)]*
|
||||
|---|---|---|---|---|
| Primary Cause of Visual Impairment | Mild (20/40–20/63) | Moderate (20/80–20/160) | Severe (≤20/200) | Total [n (%)] |
| Uncorrected refractive error† | 57 (59.4) | 7 (18.4) | 3 (4.4) | 67 (33.0) |
| Age-related macular degeneration | 8 (8.3) | 5 (13.2) | 14 (20.3) | 27 (13.3) |
| Diabetic retinopathy | 5 (5.2) | 10 (26.3) | 7 (10.1) | 22 (10.8) |
| Unknown | 5 (5.2) | 1 (2.6) | 12 (17.4) | 18 (8.9) |
| Corneal opacity | 3 (3.1) | 5 (13.2) | 8 (11.6) | 16 (7.9) |
| Posterior capsular opacification | 9 (9.4) | 3 (7.9) | 3 (4.4) | 15 (7.4) |
| Glaucoma | 5 (5.2) | 2 (5.3) | 4 (5.8) | 11 (5.4) |
| Other retinal disorders | 2 (2.1) | 2 (5.3) | 5 (7.3) | 9 (4.4) |
| Myopic degeneration | 1 (1.0) | 1 (2.6) | 5 (7.3) | 7 (3.5) |
| Retinal detachment | 0 (0.0) | 1 (2.6) | 5 (7.3) | 6 (3.0) |
| Other | 1 (1.0) | 1 (2.6) | 2 (2.9) | 4 (2) |
| Amblyopia | 0 (0.0) | 0 (0.0) | 1 (1.5) | 1 (0.5) |
*
Severity of visual impairment was determined by presenting visual acuity in worse-seeing cataract-operated eye.
†
Uncorrected refractive error was defined as cataract-operated eye having visual impairment when measured by presenting visual acuity (visual acuity ≤ 20/40), but no visual impairment when measured by best-corrected visual acuity (visual acuity > 20/40).