This difference remained significant when considering subgroups with unifocal or multifocal GA lesions , because eyes with ORT in both subgroups had a slower enlargement amount of GA than eyes without ORT ( 2.911.70 vs. 2.080.88 [ P = 0.01 ] , in eyes with multifocal GA lesions ; and 2.241.40 vs. 1.630.57 [ P = 0.02 ] , in eyes with unifocal GA lesions ) .