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Lesson 5 The Eye

Chapter 16 Opthalmology

TermDefinition
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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