Results of visual functioning questionnaire in VLBW survivors at age 27–29 years compared with term born controls
| Measure | VLBW (n=250) | Controls (n=100) | P value |
| (A) VLBW vs controls | |||
| % Rating eyesight as good or excellent (with glasses, contacts) | 86.8 | 91 | NS |
| % Worried about eyesight | 27.6 | 28 | NS |
| Mean (SD) difficulties with everyday activities score (other than driving, due to eyesight) | 13.1 (6.5) | 11.7 (1.5) | 0.03 |
| % Who drive a car* | 78.8 | 96 | 0.001 |
| Mean driving difficulties score (due to eyesight)† | 3.9 (1.6) | 3.5 (1) | 0.02 |