Which eye component is the layer at the back of the eye that contains photoreceptors?

Which eye component is the layer at the back of the eye that contains photoreceptors?

• A. Retina
• B. Choroid
• C. Iris
• D. Lens

Answer: (A)

The retina is the layer at the back of the eye that contains photoreceptors. Photoreceptors are the special cells called rods and cones that convert light into electrical signals the brain can interpret. Rods help us see in low light and detect movement, while cones detect colors and fine detail in brighter light. The retina sits right against the back of the eye, and its signals travel through the optic nerve to the brain to form images. The other parts play different roles: the choroid supplies blood and helps absorb stray light but does not contain photoreceptors; the iris adjusts the size of the pupil; the lens focuses light onto the retina.

The retina is the layer at the back of the eye that contains photoreceptors. Photoreceptors are the special cells called rods and cones that convert light into electrical signals the brain can interpret. Rods help us see in low light and detect movement, while cones detect colors and fine detail in brighter light. The retina sits right against the back of the eye, and its signals travel through the optic nerve to the brain to form images. The other parts play different roles: the choroid supplies blood and helps absorb stray light but does not contain photoreceptors; the iris adjusts the size of the pupil; the lens focuses light onto the retina.