Figure 2. Retinas after oxygen induced retinopathy (OIR) protocol. A: Flatmounted retina of a BALB/cByJ mouse on postnatal day 16 after exposure to the OIR protocol. The retina is relatively well vascularized at this time point. B: A retina from a C57BL/6ByJ mouse at the same time point after exposure to the OIR protocol. The central retina has large areas of avascularity.