Judged: two independent readers; copy check clear.
retinal cone
retinal cone A retinal cone is a light-sensitive nerve cell found mainly in the fovea of the macula.
A retinal cone is a light-sensitive nerve cell found mainly in the fovea of the macula. Cone cells function in daylight vision and support color perception and sharp central vision, with three main types that differ in their sensitivity to red, blue, or green light.