1. Structure of the Eye
Anterior Cavity: smaller cavity contained between the cornea and lens, filled with aqueous humour
Sclera: white of eye acts as support and protection, very thick and connects to skeletal muscles
Cornea: transparent section of sclera

2. Structure of the Eye
Ciliary Muscle: muscles that pull on suspensory ligaments that control lens focus
Iris: pigmented smooth muscle that controls the size of the pupil as well as the amount of light that enters the eye
Posterior Cavity: large cavity filled with aqueous humour contained between the lens and retina

3. Structure of the Eye
Choroid: layer between the sclera and retina, has capillary network, delivers oxygen and nutrients to the retina
Retina: thin pigmented layer of tissue that is composed of cones and rods
Optic disk: or blind spot of retina where the optic nerve connects to the retina

4. Structure of the Eye
Cones: cells that conduct photo-chem reactions used for color vision. Cones are three colors red, blue, green
Rods: cells that conduct photo-chem reactions used for night vision