Comparison of visual abnormalities at 7–8 years in children with and without acute retinopathy of prematurity (ROP)
| ROP+ | ROP−(or NA) | Significance (χ2) | Overall | |
|---|---|---|---|---|
| Number | 58 | 238 | 296 | |
| Any visual abnormality | 79% | 60% | p<0.01 | 64% |
| Distance VA | ||||
| <4/10: worse eye | 29% | 15% | p<0.05 | 18% |
| <4/40: worse eye | 12% | 1% | p<0.001 | 3% |
| <4/10: better eye | 19% | 5% | p<0.001 | 8% |
| <4/40: better eye | 10% | 1% | p<0.001 | 3% |
| Near VA worse than N.5 | ||||
| worse eye | 16% | 8% | NS | 10% |
| better eye | 14% | 5% | p<0.05 | 6% |
| Photoscreen myopia, any: | ||||
| worse eye | 36% | 18% | p<0.01 | 21% |
| better eye | 25% | 11% | p<0.01 | 14% |
| Photoscreen hypermetropia, any | 17% | 19% | NS | 18% |
| Photoscreen astigmatism, any | 6% | 12% | NS | 11% |
| Strabismus (includes treated) | 33% | 19% | p<0.05 | 22% |
| Stereopsis worse than 140° | 14% | 14% | NS | 14% |
| Spectacles prescribed | 40% | 16% | p<0.001 | 21% |
↵Children blind from ROP have been excluded from photoscreen and stereopsis data. ROP+ = acute retinopathy of prematurity present; ROP− = acute retinopathy of prematurity not present; NA = not examined for acute retinopathy of prematurity; VA = visual acuity.