74 terms

Ch. 17-The Eye combining forms kk

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-opia
vision
-opsia
vision
-tropia
to turn
fundus of the eye
posterior, inner part of the eye
iris
pigmented (colored) layer that opens and closes to allow more or less light into the eye
lens
transparent, biconvex body behind the pupil of the eye; bends (refracts) light rays to bring them into focus on the retina
optic disc
region at the back of the eye where the optic nerve meets the retina; contains only nerve fibers, no rods or cons, sensitive to light
blepharitis
inflammation of the eyelid
blepharoptosis
this condition may be caused by abnormalities of the eyelid muscle or by nerve damage

Also called ptosis.

This condition
may be caused by abnormalities of the eyelid muscle or by nerve
damage.
conjuctivitis
known as "pink eye",

occurs when blood vessels dialate from allergens like pollen (allergic conjuctivitis), bacterial infection (bacterial conjuctivitis) or virus (viral conjuctivitis)
anisocoria
unequal pupils,

may be an indication of neurologic injury or disease

anis/o -- unequal
corneal abrasion
a scratch on the cornea's eye
cycloplegic
ciliary body or muscle of the eye pertaining to paralysis; palsy
dacryoadenitis
tears, teardtuct gland inflammation

blockage, inflammation , infection of a nasolacrimal dust and lacrimal sac
iritis
inflammation of the iris;

characterized by pain, sensitivity to light, and lacrimination
iridic
of or relating to the iris
iridectomy
portion of the iris is removed to improve drainage of aqueous humor or to extract a foreign body
keratitis
inflammation of the cornea
lacrimal
pertaining to tears
lacrimation
process; condition of tears
intraocular
pertaining to within, into the eye
opthalmologist
medical eye doctor who specializes in treating disorders of the eye
opthalmic
pertaining to the eye
opthalmoplegia
eye paralysis, palsy
optic
pertaining to vision of the eye
optometrist
nonmedical professional who can examine eyes to determine vision problems and prescribe lenses; a doctor of optometry
optician
nonmedical professional who grinds lenses and fits glasses but cannot prescribe lenses
palpebral
pertaining to the eyelid
papilledema
swelling of the optic disc; nipple like
phacoemulsification
technique of cataract extraction using ultrasonic vibrations to fragment (emulsify) the lens and aspirate it from the eye
aphakia
this may be congenital, but most often it is the result of extraction of a cataract (clouded lens) without placement of an artificial lens (pseudophakia)
pupillary
pertaining to the pupil
retinitis
inflammation of the retina
hypertensive retinopathy
lesions such as narrowing of atrioles, microaneurysms, hemorrhages, and exudates (fluid leakage) are found on examination of the fundus)
corneoscleral
pertaining to the cornea's sclera (white of the eye) when it is hard
scleritis
inflammation of sclera
uveitis
inflammation of the uvea
amblyopia
dull, dim vision;

unilateral or bilateral reduction of visual activity

(also known as lazy eye)
diplopia
double vision condition
glaucoma
gray mass or collection of fluid - aqueous humor

increased intraocular pressure results in damage to the retina and optic nerve with vision loss. aqueous humor can't drain and pressure builds
miosis
smaller, less;

contraction of the pupil (mototic is a drug such as pilocarpine that causes the pupil to contract)
mydriasis
enlargement of the pupils.
nyctalopia
night blindness;

poor vision at night but good vision on bright days
photobia
sensitivity to light
presbyopia
impairment of vision as a result of old age

loss of elasticity of ciliary body impairs its abiliy to adjust th lens for accommodation to near vision.

lens of eye cannot become fat to bend rays from near images.
scotoma
area of decreased vision surrounded by an area of normal vision; a blind spot; can result from damage to the retina or the optic nerve
xerophthalmia
condition of dry eyes
hyperopia (hypermetropia)
farsightedness - 2 terms
hemianopsia
absence of vision in half of the visual field
esotropia
inward turning of an eye;
astigmatism
defective curvature of the cornea or lens of the eye

light rays are uneven and not sharply focused on the retina so that the image is distorted
myopia
nearsightedness

eyeball is too long, front to back,

or, the refractive power of the lens is so strong that light rays do not properly focus on the retina

image looks blurred

concave glasses correct this
cataract
clouding of the lens, causing decreased vision. protein in lens aggregates and clouds vision
chalazion
small, hard, cystic mass (granuloma) on the eyelid. result of chronic inflammation of a sevaceous gland
diabetic retinopathy
retinal effects of diabetes mellitus includes microaneurysms, hemorrhages, dilation of retinal veins, and neovascularization (new blood vessels form in the retina)
macular edema
occurs as fluid leaks from blood vessels into the retina and vision is blurred
exudates
fluid leaking from the blood appear in the retina as yellow-white spots. laser photocoagulation and vitrectomy help
tonometry
glaucoma is diagnosed by this instrument after being applied externally to the eye after administration of local anesthetic
trabeculoplasty
laser therapy for chronic open-angle glaucoma causes scarring in the drainage angle, which improves aqueous humor outflow and reduces intraocular pressure
pseudophakia
artificial lens (pseudophakia)
retinitis pigmentosa
-genetic disorder destroys retinal rods
-pigmented scar forms on the retina
- resulting in decreased vision and night blindness
miotic
drug that causes the pupil to contract
visual field
space of vision in each eye
exotropia
outward turning of eye
strabismus
defect in eye muscles so that both eyes cannot be focused at the same time

extropia and esotrpia
errors of refraction
astigmatism, hyperopia, myopia are examples of ...
ectroplon
outward sagging and eversion of the eye lik
entroplon
inversion of the eye lid.

lashes rub against the eye
hordeolum
stye

infection of a sebaceous gland produces small white nodule
ptosis
drooping of upper lid margin from neuromuscular problems
xanthelasma
raised yellow plaque on eyelid

lipid disorder

tellow, plate
macular degeneration
progressive damage to macula of retina

leading cause of blindness in elderly

severe loss of central vision
drusen
dry form of macular degeneration - clumps of extracellular debris

no treatment
wet form of macular degeneration
new, neovascular and leaky, exudate blood vessels close to macula