IGF1 and retinopathy of prematurity: Several promising ROP prediction models have been proposed, such as WINROP (based on GA, birth weight, postnatal weight gain as a surrogate of insulin-like growth factor IGF-1)25, CHOP ROP (based on birth weight, GA, and postnatal weight gain)26 or ROPScore (based on GA, birth weight, blood transfusions, mechanical ventilation, and postnatal weight gain)27.