in the same period , a good visual acuity ( va greater than or equal to 0.5 ) was achieved in 39 % , reasonable ( va 0.4-0.15 ) in 28 % , and an ambulatory vision ( va 0.1-cf2m ) in 16 % , whereas 18 % of the eyes became blind ( va cf1m or worse ) .
C0042789
vision
C0015392
eyes