Visual acuity scores before and after cataract surgery among the subsample of eyes that received fundus photographs (n=362), according to diabetic retinopathy severity
| DR severity | Preoperative VA | Postoperative VA |
| None (n=179) | 65.4±16.5 (20/50) | 74.1±14.2 (20/33) |
| Mild (n=50) | 62.7±20.4 (20/58) | 71.1±15.5 (20/38) |
| Moderate (n=124) | 65.9±14.6 (20/50) | 69.6±15.6 (20/40) |
| Severe or PDR (n=9) | 67.9±10.3 (20/46) | 66.7±17.7 (20/48) |
| Total (n=362) | 65.2±16.3 (20/50) | 72.0±15.1 (20/36) |
The results are listed as mean±SD VA letter score (Snellen equivalent).
DR, diabetic retinopathy; PDR, proliferative diabetic retinopathy; VA, visual acuity.