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anterior chamber
fluid-filled space between the cornea and iris
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aqueous humor
watery liquid secreted at the ciliary body-fills anterior and posterior chambers of eye-nourishes cornea, iris and lens
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ciliary body
ring of muscle, controls power of the lens
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ciliary muscle
smooth muscle portion of the ciliary body, near-vision capabilities
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ciliary process
epithelial tissue-secrete aqueous humor
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conjunctiva
mucous membrane that lines the eyelids and outer surfaces of the eyeball
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cornea
bends light to focus image
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eyelid (palpebra)
opens and closes
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fovea centralis
- depression in the middle of the macula lutea
- sharpest vision here
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macula lutea
central region of the retina, responsible for central vision
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fundus (base)
interior surface of the eye ball: retina, optic disk, macula, posterior pole
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meibomian glands
oil glands located along the rim of the eyelids
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iris
- colored circle
- regulates light passage through pupil
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lacrimal gland
secretes tears
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lacrimal duct
tubes that carry tears to the lacrimal sac
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lacrimal sac
structure that collects tears before emptying into the nasolacrimal duct
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lens
bends and focuses light
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lens capsule
capsule that encloses the lens
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nasolacrimal duct
passageway for tears from teh lacrimal sac into the nose
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optic disk
- exit site of retinal nerve fibers
- entrance/exit for arteries and veins
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optic nerve
carries impulses of sight from the retina to the brain
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pupil
center of the iris, light passes through here
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retina
-cones & rods
- receives/transmits light to the optic nerve
- cones: color, bright light
- rods: dim light
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sclera
tough, fibrous, white outer coat
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vitreous
jelly-like mass filling the inner chamber between the lens and retina
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