CH. 11 Diagnostic Procedures for Vision
LASIK
Laser-Assisted in SIitu Keratomileusis, laser used to change shape of layer
PERRLA
Pupils are Equal, Round, and Reactive to Light and Accommodation
orbitotomy
a surgical incision into the orbit
radial keratotomy
a surgical procedure to treat myopia, flattens cornea
intraocular lens
a surgically implanted replacement for a natural lens that has been removed
fluorescein staining
application of fluorescent dye to the surface of the eye via eye drops or a strip applicator, causes corneal abrasion to turn bright green
ocular prosthesis
artificial eye, may be fitted to wear over a malformed eye or to replace an eyeball
concave lenses
curved inward, nearsightedness (myopia)
convex lenses
curved outward, farsightedness (hyperopia)
slit-lamp opthalmoscopy
diagnostic procedure in which a narrow beam of light is focused onto parts of eye to permit Dr. to examine structures at front of eye
cover test
examination of how the two eyes work together and is used to assess binocular vision, one eye is covered while patient focuses on object
refraction
examination procedure to determine an eye's refractive error, so best lens can be prescribed
opthalmoscopy
funduscopy, examines fundus(back part)
pneumatic retinopexy
gas bubble is injected into the vitreous cavity to put pressure on the area of repair while it heals
lensectomy
general term used to describe the surgical removal of a cataract-clouded lens
tomometry
measurement of intraocular pressure
visual field testing
perimetry, is performed to determine losses in peripheral vision.
mydriatic drops
placed into eyes to produce temporary paralysis forcing pupils to remain dilated even in bright light
fluorescein angiography
radiographic study of blood vessels in the retina of the eye following the injection of fluorescein dye as contrast medium
contact lenses
refractive lenses that float directly on the tear film in front of the eye
enucleation
removal of eyeball leaving muscles intact
vitrectomy
removal of the vitreous humor and its replacement with a clear solution
dilation
required in preparation for the ophthalmoscopic examination of the interior of the eye, artificial enlargement of pupils
scleral buckle
silicone band or sponge used to repair a detached retina,
iridectomy
surgical removal of a portion of the tissue of the iris
corneal transplant "keratoplasty"
surgical replacement of a scarred or diseases cornea
tarsorrhaphy
the partial, or complete, suturing together of the upper and lower eyelids to protect eye when lids are paralyzed
phacoemulsification
the use of ultrasonic vibration to shatter and remove the lens clouded by a cataract
diopter
unit of measurement of a lens' refractive power
photocoagulation
use of lasers to treat some forms of macular degeneration, by sealing leaking blood vessels
Snellen chart
used to measure visual acuity recorded as frsction 20/20 is normal
retinopexy
used to reattach the detached area in a retinal detachment
laser trabeculoplasty
used to treat open-angle glaucoma by creating openings in mesh work for fluid to drain
laser iridotomy
uses a focused beam of light to create a hole in the iris of the eye, treats closed angle glaucoma
