Medical Definition of RodRod: A type of specialized light-sensitive cell (photoreceptor) in the retina of the eye that provides side vision and the ability to see objects in dim light (night vision). By contrast, the cones are the retinal photoreceptors that provide sharp central vision and color vision. Last Editorial Review: 5/13/2016
Back to MedTerms online medical dictionary A-Z List 
Need help identifying pills and medications? |
