End rods are specialized structures found in the retina of the eye. They are photoreceptor cells that are highly sensitive to light, allowing us to see in low-light conditions. End rods contain a pigment called rhodopsin, which helps convert light into electrical signals that the brain interprets as visual images. These cells are crucial for night vision and peripheral vision. Unlike cones, which are responsible for color vision and function best in bright light, end rods are more numerous and are primarily located in the outer regions of the retina. This arrangement enhances our ability to detect movement and shapes in dim environments.