• (rods) Light-sensitive cells in the retina that respond best in darkness and dim light.
  Harvard Dictionary of Health Terms
  Harvard Medical Publishing, 2011
• (rod cell) One of the two photoreceptor cell types of the vertebrate retina; rods are more sensitive to light than cones, but rod mediated vision has less spatial and temporal resolution than cone vision.
  CRISP Thesaurus
  National Institutes of Health, 2006
• (retinal rod) A photoreceptor cell located in the retina of the eye that allows low light vision.
  NCI Thesaurus
  U.S. National Cancer Institute, 2021
• (retinal rod photoreceptor cells) Photosensitive afferent neurons located in the peripheral retina, with their density increases radially away from the FOVEA CENTRALIS. Being much more sensitive to light than the RETINAL CONE CELLS, the rod cells are responsible for twilight vision (at scotopic intensities) as well as peripheral vision, but provide no color discrimination.
  NLM Medical Subject Headings
  U.S. National Library of Medicine, 2021
• Rod, one of two types of photoreceptive cells in the retina of the eye in vertebrate animals. Rod cells function as specialized neurons that convert visual stimuli in the form of photons (particles of light) into chemical and electrical stimuli that can be processed by the central nervous system....
  Encyclopedia Britannica
  Encyclopedia Britannica, Inc., 2020