To further substantiate this pro‐angiogenic effect of NGF, pups subjected to the ROP protocol received twice daily NGF eye drops on one eye and vehicle control (PBS) on the other eye from p13 to p16.31 A significant increase of pathological neovascularization in p17 retinas of the eyes that were treated with NGF drops was observed, as compared to the contralateral control‐treated eye (Figure 1C and D). Here, NGF is linked to retinopathy of prematurity.