PRESENTATION OUTLINE
sclera
- the white outer layer of the eyeball that is the protective outer coat
iris
- a flat, colored, ring-shaped membrane behind the cornea of the eye, with an adjustable circular opening (pupil) in the center that controls the size, amount of light, and gives the eye an unique color
pupil
- the dark circular opening in the center of the iris of the eye, varying in size to regulate the amount of light reaching to retina and is where light enters
cornea
- the transparent layer forming the front of the eye that acts like the eye's outmost lens and is like a window that controls and focuses the entry of light into the eye
lens
- the crystalline lens along with the cornea helps to refract light to be focused on the retina
retina
- the retina is were the visual image if formed and covers about 65% of its interior surface and photosensitive cells called rods and cones in the retina convert incident light energy into signals that are carried to the brain by the optic nerve
optic nerve
- each of the 2nd pair of cranial nerves, transmitting impulses to the brain from the retina at the back of the eye and impulses are sent to the brain and makes the image
