What is the function of the retina?

The function of the retina is to transmit nerve impulses to the brain for image interpretation. The retina is a thin layer of tissue located at the back of the eye, and it contains photoreceptor cells called rods and cones. These cells detect light and convert it into electrical signals. Once these signals are generated, they are sent through the optic nerve to the brain, where they are processed to form visual images. This essential process allows us to perceive our surroundings.

The other options, while related to the eye or vision in some way, do not accurately describe the primary role of the retina. For example, controlling the entry of light and protecting the eye from infection are functions associated with different structures within the eye, such as the iris and the cornea, respectively. The balance mechanism is linked to the inner ear, which is entirely separate from the functions of the retina.