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20 Cards in this Set
- Front
- Back
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Eyelids are composed of what?
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1.skin
2.conjunctiva 3.muscle |
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The three eyelid functions include?
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1. Distribute tears over the surface of the eye.
2.Limit the light entering 3.protect from foreign bodies |
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Conjunctiva is?
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A thin membrane covering most of the anterior eye and tie inner surface of the eyelid in contact with the globe. (Protects the eye from foreign bodies and drying out.)
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Lacrimal gland isLocat?
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located in the lateral superior eyelid produces tears that moisten the eyes. Tears drain from lacrimal sac in the nasal cavity.
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External eyes consist of what three parts?
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1.eyelids
2.conjunctiva 3.lacrimal gland |
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The outer fibrous layer os the internal eye is made up of the?
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Sclera posteriorly and cornea anteriorly.
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The middle coat of choroid is made up of the internal eye is made up of?
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Choroid posteriorly and the cilliary body and iris anteriorly
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Iris is?
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the inner coat of the internal eye that is a circular muscle that gives eyes their color. Controls the amound of light going through the pupil by dilating and contracting.
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Appears the white of the eye and forms the structural support of the eye?
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Sclera
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located right behind the iris and is transparent crystal that is very elastic. Allows images from varying distances to by focused on the retina.
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Lens
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Cornea is what?
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A continuation of the sclera can sense pain and seperates the aqueous humor of the anterior chamber from the external environment and transmits lgiht through the lens to the retina.
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THe sensory nerve network of th eye- changing light impulses to electribal impulses, which are sent via the optic nerve to the brain.
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Retina
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Snellen chart test what?
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Visual acuity
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Ptosis is present wht the upper eyelid droops over?
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pupil
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When shining light obliquely into each eye look for?
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Direct Reaction and the consensual reaction
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the involuntary rhytmic rapid movment of the eye when testing the extra ocular eye muscles
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Nystagmus
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The most common inflammation of the eyelids caused by seborrhea or bacteris (staph infections)
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Blepharitis (burning, itching and redness of eyelid)
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AN acute lesion of at the eyelid usually in the sebaceous glands caused by a staph infection.
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Hordeolum (sty) painful
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Chalazion is?
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Is a sty becomes chronic... a hard not tender swelling of the eyelid possibly proceeded by a sty. (sysitc swelling of the eyelid.)
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Conjunctivitis
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An inflammation of the conjunctiva, a muscous membrane that lines the inner portions of the eyelids and overing the anterior surface of the eyeball, may be due to bacteria, viral or alleric causes.
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