VEGFA and retinopathy of prematurity: In addition, infants treated with IVR (the more severe ROP in general with high risks of reactivation after anti-VEGF treatment) required longer follow-up time than those with spontaneously regressed ROP, so the PMA at final follow-up of the IVR group was approximately 24.4 weeks (5 months) older than those in the control group.