The Eye

SCLERA- is the tough, supporting wall of the eye.

CORNEA- Is the transparent outer layer found at the front of the eye. It refracts light into the eye.

IRIS- Containing muscles that allow it to control the diameter of the pupil and therefore how much light enters the eye.

LENS- Focuses the light onto the retina 

CILIARY MUSCLE AND SUSPENSORY LIGAMENTS- these control the light onto the retina

OPTIC NERVE- Carries impluses from the receptors on the retina to the brain

THE IRIS REFLEX:

Very bright…