09a Optical Terminology - Optical Terminology Combining...

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Optical Terminology Combining Forms Aque(o)- Water blephar(o)- Eyelid conjunctiv(o)- Conjunctiva (to join together) corne(o)- / kerat(o)- Cornea ir(o)- / irid(o)- Colored circle, iris lacrim(o)- / dacry(o)- Tear ocul(o)- ophtalm(o)- / opt(o)- Eye phac(o)- / phak(o)- Lens (lentil) phot(o)- Light presby(o)- Old age retin(o)- Retina scler(o)- Hard or sclera vitre(o)- Glassy -opia (additional suffix) Condition of vision Anatomical Terminology Anterior chamber Fluid-filled space between cornea and iris Aqueous humor Watery liquid secreted at the ciliary body that fills the anterior and posterior chambers of the eye and provides nourishment for the cornea, iris, and lens Humor Fluid Canal of Schlemm Duct in anterior chamber that carries filtered aqueous humor to the veins and bloodstream Choroid Vascular layer beneath the sclera that provides nourishment to outer portion of the retina Ciliary body Ring of muscle behind the peripheral iris that controls the focusing shape of the lens Ciliary muscle Smooth muscle portion of the ciliary body, which contracts to assist in near vision capability Ciliary processes Epithelial tissue folds on the inner surface of the ciliary body that secrete aqueous humor Conjunctiva Mucous membrane that lines the eyelids and outer surface of the eyeball Cornea Transparent, anterior part of the eyeball covering the iris, pupil, and anterior chamber that functions to refract (bend) light to focus a visual image Eyelid/ palpebra Movable protective fold that opens and closes, covering the eye Fovea centralis Pinpoint depression in the center of the macula lutea that is the site of sharpest vision Fovea Pit Fundus (base) Interior surface of the eyeball including the retina, optic disc, macula, and posterior pole (curvature at the back of the eye) Glands of Zeis Oil glands surrounding the eyelashes Meibomian glands Oil glands located along the rim of the eyelids Iris Colored circle; colored part of the eye located behind the cornea that contracts and dilates to regulate light passing through the pupil Lacrimal glands Gland located in the upper region above the eyeball that secretes tears Lacrimal ducts Tubes that carry tears to the lacrimal Lacrimal sac Structure that collects tears before emptying into nasolacrimal duct Lens Transparent structure behind the pupil that bends and
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focuses light rays on the retina Lens capsule
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09a Optical Terminology - Optical Terminology Combining...

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