Relation between stage of retinopathy and visual outcomes at 7 years of age
| Stage 0, 1 or 2 | Stage 3 | p Value | |
|---|---|---|---|
| Acuity measured using the Snellen chart. Values are median (range). | |||
| Strabismus | 14 | 3 | |
| No strabismus | 94 | 5 | 0.092 |
| Contrast sensitivity | |||
| <150 | 6 | 2 | |
| ⩾150 | 102 | 8 | 0.095 |
| Stereopsis | |||
| <120 | 42 | 5 | |
| ⩾120 | 66 | 3 | 0.260 |
| Acuity | |||
| Left eye | 6/6 (6/6–6/36) | 6/6 (6/6–36) | 0.380 |
| Right eye | 6/6 (6/6–6/60) | 6/6 (6/6–6/36) | 0.012 |