retina

retina (In French rétine) location of the color stimulus input (color perception) in the eye. The retinal receptors are the cones (uvulas, cônes) for trichromatic daytime vision and the rods (bâtonnets) for monochromatic scotopic vision. Most cones are concentrated in the macula lutea (tache jaune), and in the middle is the fovea (fovéa), the point of sharpest vision. The receptorless entrance of the optic nerve is called the blind spot (point aveugle).