abstract:The elements composing the Layer of Rods and Cones (Jacob’s membrane) in the retina of the eye are of two kinds, rod cells and cone cells, the former being much more numerous than the latter except in the macula lutea.
In the back of your eyethere isathinlayeroftissue that containsmillions of tiny light-sensingnervecellscalledrodsand cones. Cones respond to specific wavelengths of light.