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Chapter 5
The Eye
| Term | Definition |
|---|---|
| corne/o | cornea |
| irid/o | colored circle/iris |
| ophthalm/o | eye |
| phot/o | light |
| vitre/o | glassy |
| anterior chamber | fluid-filled space between the cornea and iris |
| choroid | vascular layer beneath the sclera that provides nourishment to the outer portion of the retina |
| conjunctiva | mucous membrane that lines the eyelids and outer surface of the eyeball |
| fovea centralis | pinpoint depression in the center of the macula lutea that is the site of the sharpest vision (fovea=pit) |
| meibomian glands | oil glands located along the rim of the eyelids; also called the meibomian glands |
| lens | transparent structure behind the pupil that bends and focuses light rays on the retina |
| optic disc | exit site of retinal nerve fibers as well as entrance point for retinal arteries and exit point for retinal veins |
| retina | innermost layer that perceives and transmits light to the optic nerve |
| sclera | tough, fibrous, white outer coat extending from the cornea to the optic nerve |
| blepharospasm | involuntary contraction of the muscles surround the eye causing uncontrolled blinking and lid squeezing |
| lacrimation | secretion of tears |
| refractive errors | defects in the bending of light as it enters the eye, causing an improper focus on the retina |
| presbyopia | impaired vision caused by old age or loss of accommodation |
| blepharitis | inflammation of the eyelid |
| cataract | opaque clouding of the lens causing decreased vsision |
| dacryoadenitis | inflammation of the lacrimal gland |
| entropian | outward turning of the rim of the eyelid |
| iritis | inflammation of the iris |
| pseudophakia | an eye in which the natural lens is replaced with an artificial lens implant (pseudo = false) |
| retintis | inflammation of the retina |
| exotropia | right or left eye deviates outward, away from the nose (exo=out; tropo=turning) |
| ophthalmoscopy | use of an ophthalmoscope to view the interior of the eye |
| blepharoplasty | surgical repair of eyelid |
| dacryocystectomy | excision of a lacrimal gland |
| keratoplasty | corneal transplantation; replacement of a diseased or scarred cornea with a healthy one for matched donor |
| phacoemulsification | use of ultrasound to shatter and break up a cataract, with aspiration and removal |
| eye irrigation | washing of the eye with water or other fluid (e.g. , saline) |
| miotic | agent that causes the pupil to contract (mio=less) |
Created by:
ilsehartig
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