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chapter 5 vocabulary
| Term | Definition |
|---|---|
| blephar/o | eyelid |
| cycl/o | circle, ciliary body |
| dacry/o, lacrim/o | tear |
| ir/o, irid/o | colored circle, iris |
| phac/o, phak/o | lens (lentil) |
| presby/o | old age |
| vitre/o | glassy |
| -opia | condition of vision |
| asthenopia | eyestrain (asthenia = weak condition) |
| diplopia | double vision |
| scotoma | blind spot in vision |
| cycloplegic | agent that paralyzes the ciliary muscle and the powers of accommodation; commonly used in pediatric eye examination |
| mydriatic | agent that causes dilation of the pupil; used for certain eye examinations |
| eye instillation | introduction of a medicated solution in the eye, usually administered by a drop (gt) or drops (gtt) in the affected eye or eyes |
| blepharoplasty | surgical repair of an eyelid |
| dacryocystectomy | excision of a lacrimal sac |
| enucleation | excision of an eyeball |
| iridotomy | incision into the iris (usually with a laser) to allow drainage of aqueous humor from posterior to anterior chamber, used to treat a type of glaucoma) |
| keratoplasty | corneal transplantation; replacement of a diseased or scarred cornea with a healthy one from a matched donor |
| Intraocular lens (IOL) implant | implantation of an artificial lens to replace a defective natural lens (e.g., after cataract extraction) |
| phacoemulsification | use of ultrasound to shatter and break up a cataract, with aspiration and removal |
| scleral buckling | surgery to treat retinal detachment by placing a band of silicone around the sclera to cinch it toward the middle of the eye and relieve pull on the retina; often combined with other techniques to seal retinal tears (cryoretinopexy) |
| refractive errors | defects in the bending of light as it enters the eye, causing an improper focus on the retina |
| hyperopia | farsightedness; difficulty seeing close objects when light rays are focused on a point behind the retina |
| myopia | nearsightedness; difficulty seeing distant objects when light rays are focused on a point in front of the retina |
| presbyopia | impaired vision caused by old age or loss of accommodation |
| aphakia | absence of the lens, usually after cataract extraction |
| blepharitis | inflammation of the eyelid |
| blepharoptosis | drooping of the eyelid; usually caused by paralysis |
| cataract | opaque clouding of the lens causing decreased vision |
Created by:
ishicapatel26
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