Fig. 3From: Progression of retinal vascularization after intravitreal anti-vascular-endothelial growth factor therapy in retinopathy of prematurityTimeline of zone-shifts in retinopathy of prematurity (ROP) patients based on pre-treatment zones 1 and 2. The time to full retinal vascularization did not significantly differ between the two groups (p = 0.10). However, patients with pre-treatment zone 2 reached zone 3 faster than those with pre-treatment zone 1 (p < 0.01)Back to article page