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Conjunctiv/o
conjunctiva (to join together)
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Cycl/o
ciliary body (circle)
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Ir/o
iris (colored circle)
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Irid/o
iris (colored circle)
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-opia
condition of vision
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Anterior Chamber
- anatomical term
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fluid-filled space between the cornea & the iris
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Aqueous Humor
- anatomical term- watery liquid secreted at the ciliary body that fills the anterior & posterior chambers of the eyes & provides nourishment for the cornea, iris, & lens
- - (humor= fluid)
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Canal of Schlemm
- anatomical term- duct in the anterior chamber that carries filtered aqueous humor to the veins & bloodstream
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Choroid
- anatomical term- vascular layer beneath the sclera provides nourishment the the outer portion of the retina
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Ciliary Body
ring of muscle behind the peripheral iris that controls the power of the lens
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Ciliary Muscle
smooth muscle portion of the ciliary body, which contracts to assist in near-vision capability
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Ciliary Processes
- epithelial tissue folds on the inner surface of the ciliary body
- - secrete aqueous humor
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Conjunctiva
joining together; mucous membrane that lines the eyelids & outer surface of the eyeball
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Cornea
transparent, anterior part of the eyeball covering the iris, pupil, & anterior chamber that functions to refract (bend) light to focus a visual image
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Eyelid (Palpebra)
movable protective fold that opens & closes, covering the eye
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Fovea Centralis
- pinpoint depression in the center of the macula lutea that is the site of sharpest vision
- - (fovea= pit)
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Fundus (Base)
interior surface of the eyeball including the retina, optic disk, macula, & posterior pole (curvature @ the back of the eye)
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Glands of Zeis
oil glands surrounding the eyelashes
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Meibomian glands
oil glands located along the rim of the eyelids
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Iris
- colored circle
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colored part of the eye located behind the cornea that contracts & dilates to regulate light passing through the pupil
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Lacrimal Gland
gland located in the upper outer region above the eyeball that secretes tears
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Lacrimal Ducts
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
transparent structure behind the pupil that bends & focuses light rays on the retina
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Lens Capsule
capsule that encloses the lens
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Macula Lutea (Macula)
- central region of the retina responsible for central vision
- - yellow
pigment provides its color - - (lutea= yellow)
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Nascolacrimal Duct
passageway for tears from the lacrimal sac into the nose
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Optic Disk
- - exit: retinal nerve fibers, retinal veins
- - entrance: retinal arteries
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Optic Nerve
nerve responsible for carrying impulses for the sense of sight from the retina to the brain
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Posterior Chamber
space between the back of the iris & the font of the vitreous filled with aqueous fluid
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Pupil
black circular opening in the center of the iris through which light passes as it enters the eye
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Retina
- innermost layer that perceives & transmits light
- - consist of: cones, rods
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Cones
- within the retina
- - cone-shaped cells within the retina that are color sensitive & respond to bright light
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Rods
- within the retina
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rod-shaped cells that respond to dim light
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Sclera
tough, fibrous, white outer coat extending from the cornea to the optic nerve
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Trabecular Meshwork
mesh-like structure in the anterior chamber that filters aqueous humor as it flows into the canal of Schlemm
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Vitreous
jelly-like mass filing the inner chamber between the lens & the retina that gives bulk to the eye
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