Where are cones located within the eye?

• A. Cornea
• B. Lens
• C. Retina
• D. Optic nerve

Answer: (C)

Cones are one of the photoreceptor cells in the retina, the light-sensitive layer that lines the back of the eye. They work with rods to convert light into neural signals, with a high density in the fovea to support sharp, color vision in bright light. The cornea is the eye’s outer transparent surface that refracts light first, the lens focuses that light further, and the optic nerve carries the resulting signals to the brain. Since photoreceptors reside in the retina, cones are located there.