Figure 1. The distribution of mean visual acuity (VA) change (y-axis, Log MAR) of patients in the different dosage categories (x-axis, Gy) 12 months after radiation. The mean VA before treatment was 0.82±0.35, with no significant difference among dosage groups. The mean VA was 0.83±0.36 at 6 months and 0.89±0.33 at 12 months. There was no significant change in VA in any treated patient.