<P> Rod cells are photoreceptor cells in the retina of the eye that can function in less intense light than the other type of visual photoreceptor , cone cells . Rods are usually found concentrated at the outer edges of the retina and are used in peripheral vision . On average , there are approximately 90 million rod cells in the human retina . Rod cells are more sensitive than cone cells and are almost entirely responsible for night vision . However , rods have little role in color vision , which is the main reason why colors are much less apparent in dim light , and not at all at night . </P>
<P> Rod cells are photoreceptor cells in the retina of the eye that can function in less intense light than the other type of visual photoreceptor , cone cells . Rods are usually found concentrated at the outer edges of the retina and are used in peripheral vision . On average , there are approximately 90 million rod cells in the human retina . Rod cells are more sensitive than cone cells and are almost entirely responsible for night vision . However , rods have little role in color vision , which is the main reason why colors are much less apparent in dim light , and not at all at night . </P>
where are rod cells located in the eye
where are rod cells located in the eye
in the retina
in the retina