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the eye
disorders and normal
| Question | Answer |
|---|---|
| bleph | eyelid |
| ocloculo | eye |
| ophthalm | eye |
| opis/opia | vision |
| opto | vision |
| phak | lens |
| sclera | tough or hard/outer layer |
| ambly | dimness |
| od | right/ (D) dexter |
| os | left/ (S) sinister |
| ou | both (U) union |
| tonometer | instrument used to measure |
| intraocular pressure | I.O.P. |
| accommodation | focusing |
| enucleation | removal of part of the eye |
| evisceration | removal of the eye (viser=organ) |
| anisocoria | inequality of pupils |
| exophthalmus | bulging of the eyes |
| diploma | double vision |
| presbyopia | loss of visual acuity due to aging |
| amblyopia | dimness of vision |
| aphakia | no lens |
| nyctalopia | night blindness |
| myopia | near sided |
| hyperopia | far sided |
| hordeolum | infected eyelash root |
| conjunctivitis | pink eye inflamed or red can't open eye for drainage |
| purulent drainage | pus |
| dacr/o | tears/tear ducts lacrim |
| strabismus | when optic axis fails to fall on the same object |
| astigmatism | abnormal curvature of the cornea makes objects warped or distorted |
| papilledema | swelling around the optic nerve causing temporary blindness |
| macular degeneration | lose central vision |
| diabetic retinopathy | disease of the choroid (blood vessels) |
| glaucoma | increase in I.O.P. above 20 loses pherial vision |
| cataracts | opacity (clouding) of the normally clear lens. |
| what parts of the eye do you see through | pupil, choroid, retina, sclera |
| sclera | white of the eye -outer layer |
| cornea | center outer layer of the eye. 1st layer that light travels through |
| iris | a circular muscle that gives pigmentation |
| choroid | blood vessels nerve sensation |
| retina | layer where vision takes place- nerve impulse |
| optic nerve | carries impulses to the brain |
| cilliary muscle | can change shape of lens |
| which structure gives most acute vision | fovea |
| what sits inside the fovea | macula |
| name the opening in the center of the iris | pupil |
| state the pupil size in dim lights; bright lights | big/dilated ;little/constricted |
| thin membrane which covers and protects eyeball | conjunctiva |
| function of lacrim gland | forms tears |
| location of the anterior cavity | cornea to back of lens |
| location of the anterior chamber | cornea to iris |
| location of posterior cavity | lens to back of nerve |
| location of the posterior chamber | iris to back of lens |
| function of the lens | focusing/accommodation |
| location and function of the canal of schlemm | anterior cavity drains aqueous humor |
| pathway light travel through eye | cornea, pupil, lens, retina, optic nerve, occipital lobe |
| the three layers of the eye | sclera, choroid, retina |
| the area of the brain in which vision occurs | occipital lobe |
| refraction | bending of light |
| ingredient of rods and cones | rhodopsin |
| when light hits rhodopsin it splits into two chemicals | retinal & opsin which creates electrical stimulas |
| specialized nerve cells that only respond to light are | rods and cones |
| vitreous humor | jelly-like and is in posterior cavity |
| aqueous humor | provides nutrients for all structures in the anterior cavity and picks up waste and gets rid of it too |
Created by:
t4achange
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