In a group of 21 premature children in which 4 to 10 years earlier 26 eyes with stage 4 of active retinopathy of prematurity (ROP) were treated by cryopexy on the avascular retina, and 15 fellow eyes with stage 2 of active ROP were not treated, comparative measurements of the central corneal thickness, anterior chamber depth and eye axial length were performed. Not significant statistical differences of these parameters were found between the cryotreated and untreated eyes. The axial length was correlated with the degree of myopia.