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Frequency of abnormal visual acuity based on optic radiation FA quartile.
| FA quartile | Normal Visual Acuity | Abnormal Visual Acuity | P value |
|---|---|---|---|
| Quartile 1 (≤0.482) | 3 (23.1%) | 10 (76.9%) | .014 |
| Quartile 2 (>0.482, ≤0.510) | 5 (41.7%) | 7 (58.3%) | |
| Quartile 3 (>0.510, ≤0.530) | 5 (41.7%) | 7 (58.3%) | |
| Quartile 4 (>0.530) | 11 (84.6%) | 2 (15.4%) |
