FIG 7. A, The mean operative to intact side FA ratio as classified by the severity of visual defect and duration after surgery. The mean operated-to-intact side FA ratio as classified by visual field and duration after surgery is shown. Even in early cases after surgery, the FA value is found to decrease, and for the groups examined long after surgery, there is also an obvious decrease. There were no cases that were examined within 4–10 weeks in groups A or B. B, Mean operated-to-intact side ADC ratio as classified by the severity of visual defect and duration after surgery. Although a statistically significant difference is not detected when evaluated overall, there is a trend for the ADC value to decrease in the early period after surgery and increase during the late period after surgery. In the groups with time periods of >10 weeks after surgery, the increase of ADC is larger in group C. There were no cases that were examined within 4–10 weeks for groups A or B.