Lecture done Dr. Dr. Alaa Khamees, commentary Prof. Khalil alsalem ROP ( Retinopathy of prematurity) is a vaso-proliferative retinopathy of incompletely vascularized preterm retina driven by disordered oxygen regulation, inflammation, and VEGF signaling. The International Classification of ROP, Third Edition (ICROP3), refined descriptions of zones (including posterior zone II), stages, plus disease, and—crucially—post-treatment “reactivation/regression” patterns … تابع قراءة ROP (Retinopathy of prematurity) Updates