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The retina is a thin layer of tissue that lines the back of the eye and contains photoreceptors that sense light and relay this information to the brain. The retina is responsible for converting what we see into electrical impulses that are sent to the brain, where they are then interpreted as images.
There are two types of photoreceptors in the retina: rods and cones. Rods are sensitive to dim light and are responsible for night vision. Cones, on the other hand, are sensitive to bright light and color vision. Most of our daily activities, such as reading, driving, and watching television, involve cone vision.