eLife Assessment
This study identifies apoptotic retinal ganglion cells as a potential source of ATP-mediated activation of PANX1 channels that initiate developmental retinal Ca²⁺ waves and coordinate microglial activation and vascular outgrowth with postnatal maturation. The work is important because it proposed an integrative framework linking programmed cell death, spontaneous neural activity, immune responses, and angiogenesis into a self-regulating developmental loop. The multimodal data are solid, but the mechanistic conclusions would be strengthened by complementary genetic approaches, such as PANX1 or BAX knockout models, to establish direct causality.