The thin, moist tissue that lines the inner surfaces of the eyelids to help protect the eye and keep it from drying out.
The front surface of the eye. It covers iris, pupil, and anterior chamber and is responsible for 70% of the total focusing ability.
Behind the cornea is the iris, which contains the pupil. By controlling the amount of light entering the eye, the iris adjusts the size of the pupil.
The pupil is contained within the iris. It gets larger or smaller depending on how much light is available. It controls how much light enters the eye by opening up in the darkness and closing in the light.
Behind the pupil is the lens of the eye. The lens focuses light on the retina, which sends messages through the optic nerve to the brain.
Is made up of over a million nerve fibers that transport visual messages from the retina to your brain.
Located at the back of the eye, the retina receives images from the cornea and the lens and then sends those messages back to the brain.