What are the types of light-sensitive cells in the retina?

There are two types of special light receptors on the retina. These are cones and rods. The cones are responsible for the color perception of the image. Sticks are needed for twilight perception. During sleep, when the eyes are closed and it is dark around, the cones regain their functions. If the eyes do not rest during the dark phase, color vision will simply disappear. Over time, it will recover, but this can greatly harm your health. Therefore, we must not forget that the eyes must rest from sunlight.