Background & Aims: Retinopathy of prematurity (ROP) is one of the most causes of retinal detachment and blindness. Although many studies have been conducted on the pathophysiology of ROP, the exact mechanism is yet under investigation. This study aimed at evaluating the role of serum vascular endothelial growth factor (VEGF), insulin like growth factor-I (IGF-I), and its binding protein (IGFBP-...