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Protects and maintains shape of eye
Sclera


Cornea


Supplies blood to retina and sclera, prevents light reflection within eye
Choroid


changes size of pupil when smooth muscle responds to light
Iris


hole at the center of the iris
Pupil


anular ciliary smooth muscle controls tension of suspensory ligaments to adjust thickness of lens
Ciliary body


when it contract relaxes suspensory ligaments and lens thickens, for near vision
Ciliary muscle

Suspensory ligaments

focuses light onto retina
Lens


retina


sharpest vision, high cones
Fovea


blind spot
Optic disc


Optic nerve


clear, thin, watery
Aqueous humor

gel like
Vitreous humor
