Estimation of the ratio of cones to neurons in the fovea of the human retina. Invest Ophthalmol Vis Sci 1974;13:1045–9. Adams CK, Perez JM, Hawthorne MN . Rod and ... of the eye and orbit.

Both cameras and the human eye use lenses ... turning the image on the retina upside down. Inside the retina, there are millions of special sense receptors called rods and cones.

Light passes through the eyeball to the retina. There are two main types of light receptors called rods ... of cone cells which produce colour vision. The amount of light entering the eye is ...