start stage end stage eye photoreceptor cell retinal rod cell zebrafish_anatomy ZFA:0009275 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. retinal rod cells CL:0000604 TAO:0009275 unknown adult