develops from develops from retinal rod cell One of the two photoreceptor cell types of the vertebrate retina. In rods the photopigment is in stacks of membranous disks separate from the outer cell membrane. Rods are more sensitive to light than cones, but rod mediated vision has less spatial and temporal resolution than cone vision. FMA:67747 CALOHA:TS-0870 BTO:0001024 retinal progenitor cell camera-type eye photoreceptor cell