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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

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