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59 terms

HCL chapter 12

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corne/o, kerat/o
cornea
phac/o, phak/o
lens (lentil)
-opia
condtion of vision
vitre/o
galssy
ir/o, irid/o
iris (colored circle)
aque/o
water
retin/o
retina
lacrim/o, dacry/o
tear
presby/o
old age
ocul/o, ophthalm/o, opt/o
eye
phot/o
light
cycl/o
ciliary body (circle)
conjunctiv/o
conjunctiva (to joint together)
blephar/o
eyelid
scler/o
sclera (hard)
lacrimal system
gland, ducts, sac
eyelid (palpebra)
movable protective fold that opens and closes
conjunctiva
joining together, mucous membrane that line the eyelids and outer surface of the eyeball
retina
innermost layer that perceives and transmits light to the optic nerve
pupil
black circular opening in the center of the iris
iris
colored circle, colored part of the eye located behind the cornea
lens
transparent structure behind the pupil that bends and focuses light rays on the retina
ciliary body
ring of muscle behind the peripheral iris that controls the power of the lens
choroid
vascular layer beneath the sclera that provides nourishment to the outer portion of the retina
sclera
tough, fibrous, white outer coat extending from the cornea to the optic nerve
cornea
transparent, anterior part of the eyeball covering the iris, pupil, and anterior, chamber
myopia
nearsightedness
hyperopia
farsightedness
astigmatism
distorted vision caused by an oblong or cylindrical curvature of the lens or cornea that prevents light rays from coming to a single focus on the retina
refractive error
defects in the bending of light as it enters the eye
esotropia
right or left eye deviates "inward" toward the nose
exotropia
right or left eye deviates "outward" away form the nose
strabismus
crossed eyes
scleritis
inflammation of the sclera
retinitis
inflammation of the retina
retinal detachment
separation of the retina from the under lying epithlium
pterygium
fibrous growth of conjuctival tissue that extends onto the cornea
macular degeneration
breakdown or thinning of the tissues in the macula
keratitis
inflammation of the cornea
hordeolum
sty, an acute infection of a sebaceous galnd of the eyelid
glaucoma
group of diseases of the eye characterized by increased intraocular pressure that resluts in damage to the optic nerve
diabetic retinopathy
disease of the retina in diabetics characterized by capillary leakage
dacryocystitis
inflammation of the tear sac (cyst/o = sac)
dacryoadenitis
inflammation of the lacrimal gland
conjunctivitis
pinkeye, inflammation of the conjunctiva
cataract
opaque clouding of the lens causing decreased vision
blepharoptosis
drooping of the eyelid usually caused by paralysis
blepharochalasis
baggy eyelid
blepharitis
inflammation of the eyelid
aphakia
absence of the lens
amblyopia
decreased vision in early life due to a functional defect that can occur as a result of strabismus
presbyopia
impaired vision owing to old-age loss of accomodation
scotoma
blind spot in vision
photophobia
extreme sensitivity to light
lacrimation
secretion of tears
exophthalmos
abnormal protrusion of one or more eyeballs
diplopia
double vision
blepharospasm
involuntary contraction of the muscels surrounding the eye
nystagmus
involuntary, rapid oscillating movement of the eyeball