A clear fluid that helps the cornea keep its rounded shape. The area where the optic nerve leaves the retina. Each eye has a blind spot where there are no photoreceptor cells.
Blood vessels Tiny arteries and veins that carry blood to the retina.
Ciliary body Muscles that control the shape of the lens for near and far vision. Cones One type of photoreceptor cells in the retina. They are responsible for daylight and color vision. Cornea A clear, tough covering over the iris and the pupil that helps protect the eye and begins focusing the light. Fovea A dimple in the retina where cones are concentrated and vision is most acute.