Which layer of the eye contains photoreceptors?

The retina is the layer of the eye that contains photoreceptors, which are essential for vision. Photoreceptors come in two main types: rods and cones. Rods are sensitive to low light levels, allowing us to see in dim conditions, while cones are responsible for color vision and function best in bright light.

The retina is located at the back of the eye and plays a crucial role in converting light into neural signals, which are then transmitted to the brain via the optic nerve. This conversion is vital for visual perception. The structure of the retina is also uniquely designed to optimize this process, with photoreceptors located at the innermost layer, allowing them direct access to incoming light.

In contrast, other layers such as the cornea, sclera, and choroid coat serve different functions. The cornea is the transparent front part that refracts light to help focus it, the sclera is the white, protective outer layer of the eye, and the choroid coat is a layer rich in blood vessels located between the retina and sclera, providing nutrients but not containing photoreceptors.