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Lesson 5 The Eye
Chapter 16 Opthalmology
| Term | Definition |
|---|---|
| blephar/o | eyelid |
| core/o | pupil |
| corne/o | cornea |
| dacry/o | tears |
| kerat/o | cornea |
| lacrim/o | tears |
| phac/o | lens |
| ton/o | tension,pressure |
| vitre/o | glassy |
| dipl/o | double |
| phot/o | light |
| xer/o | dry |
| chrom/o | color |
| ambly/o | dull or dim |
| accommodation (Acc) | ability of eye to adjust to variations in distance |
| achromatopsia | color blindness |
| amblyopia | loss of vision not due to disease, lazy eye |
| astigmatism | uneven bending of light rays caused by irregular curvature of cornea, image is fuzzy |
| cataract | lens becomes cloudy or opaque |
| corneal abrasion | scrape of outer layer of cornea |
| cryoextraction | procedure to remove lens with cataract using extremely cold probe |
| diabetic retinopathy | small hemorrhages and edema in retina as result of DM |
| fluorescein | bright green fluorescent dye dropped onto surface of eyeball to highlight corneal abrasions |
| fluorescein angiography | procedure using IV bright green dye to examine movement of blood through vessels of eye |
| glaucoma | condition resulting from increase in intraocular pressure |
| hyperopia | person can see in distance, trouble reading at close range (farsightedness) |
| intraocular lens implant (IOL) | replacing defective natural lens with artificial lens following cataract extraction |
| LASIK | laser-assisted in situ keratomileusis -- correction of myopia with laser surgery |
| laser retinal photocoagulation | using laser to make pinpoint scars to stabilize detached or torn retina |
| macular degeneration | deterioration of macula lutea of retina, loss of vision in center of visual field |
| myopia | can see close but distance blurred, nearsightedness |
| nyctalopia | poor vision at night |
| nystagmus | jerky appearing involuntary eye movement |
| phacoemulsification | high frequency sound waves to break up cataract |
| photophobia | sensitivity to light leading to avoidance |
| photo refractive keratectomy | use of laser to reshape cornea to improve visual acuity |
| radial keratotomy | surgery with spokelike incisions in cornea to flatten, done to correct nearsightedness |
| refractive error | defect in ability of eye to bend light rays to focus image properly |
| retinal detachment | retina becomes separated from choroid layer |
| slit lamp microscope | instrument used in ophthalmology for examining posterior surface of cornea |
| Snellen chart | chart to test visual acuity |
| strabismus | weakness of external eye muscle - results in eyes looking in different directions at the same time |
| stye | small purulent infection of sebaceous gland of eye - hordeolum |
Created by:
kducey
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