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75 Cards in this Set

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captures light rays that are reflected off the object being looked at
cornea
Descemet membrane, Bowman membrane
2 cornea layers
3 layers of eye (SCR)
sclera, choroid, retina
uveal tract
choroid layer
2 structures choroid layer
outer ciliary body and inner iris
a muscular structure that is attached by suspensory ligaments to the lens supporting it.
ciliary body
colored portion of eye; composed of smooth muscle fibers which regulate the diameter of the pupil to adjust for light
iris
opening in center of eye
pupil
transparent elastic structure that refracts light waves and focuses them upon the retina
lens
sees the captured light rays as an upside down image of the object being looked at
retina
located in retina, they convert the upside down image into electrical impulses
photoreceptors
path these electrical impulses travel to reach the brain
optic nerve
turns the upside down image right side up and "translates" said image into "information
brain
sheet of light-sensitive nerve cells containing cones and rods
retina
respond to dim light for black-and-white vision
rods in retina
percept and respond to colors in daylight
cones in retina
blind spot
optic disc
separates the frontal portion into the anterior and posterior chambers
iris
filled with a lymph-like fluid called the aqueous humor, which is secreted by the ciliary body and drains into the venous sinus.
anterior/posterior chambers
lymph-like fluid in anterior/posterior chambers, which is secreted by the ciliary body and drains into the venous sinus.
aqueous humor
cavity behind lens, and is filled with a jelly-like substance called vitreous humor
vitreous chamber
jelly-like substance in vitreous chamber
vitreous humor
bone cavity holding the eyeball is lined with a layer of protective fat
orbit
palpebrae
eyelids
4 protective parts
eyebrows, eyelids (also called palpebrae), eyelashes, and lacrimal ducts
desiccation means
drying up
raises eyelid
levator palpebrae muscle
thin mucous membrane that lines the interior surface of the eyelid and the exposed surface of the eyeball.
conjunctiva
secrets tears; constantly moisten and clean the exposed portion of the eyeball
lacrimal duct
4 (ocular) rectus muscles
superior, inferior, lateral, and medial rectus muscles
2 (ocular) oblique muscles
superior and inferior oblique muscles
cartilage loop wherein superior oblique muscle passes through
trochlea
Inflammation of the lacrimal sac
dacryocystitis
Stricture or narrowing of a lacrimal duct
dacryostenosis
perception of 2 images of a single object; double vision
diplopia
eversion of eyelid edge
ectropion
inversion (turning inward) of edge of lower eyelid
entropion
Abnormal protrusion of the eyeball (bulging eyes). This can be due either to a local process or caused by a more generalized disease, such as Graves disease. Also spelled
exophthalmus
exophthalmos
A set of diseases in which there is increased ocular pressure caused by a failure of the aqueous humor to be absorbed. This causes changes to the optic disc and defects in the field of vision
glaucoma
A localized, purulent, inflammatory bacterial infection of one or more glands of the eyelids. This is also called a stye.
hordeolum
hordeolum also called
stye
infection of the sebaceous gland of eyelid; hordeolum
stye
Also called hyperopia, this is farsightedness. This occurs when the eyeball is too short and images are thus focused at a point behind the retina.
hypermetropia
farsightedness =
hyperopia or hypermetropia
Impairment of vision without any lesion of the eye detected.
amblyopia
A white or gray band around the margin of the cornea as a result of cholesterol deposition, hyaline change, or both. This occurs with advancing age.
arcus senilis
Inflammation of eyelids
blepharitis
A tonic spasm of the orbicularis oculi muscle that produces more or less total closure of the eyelid
blepharospasm
An opacity on or in the lens that usually impairs vision or causes blindness. This can affect one or both eyes. There are different types of cataracts, and they are classified according to size, shape, and occurrence or by the etiology.
cataract
A cystic swelling in a gland of the eyelid due to a blocked duct
chalazion
Excessive edema of the conjunctiva
chemosis
Inflammation of the choroid or uveal tract
choroiditis
Inflammation of the choroid and retina
chorioreinitis
Inflammation of the conjunctiva, usually associated with a discharge
conjunctivitis
Bleeding into the anterior chamber of the eye, usually due to trauma.
hyphema
loss of central vision due to changes in a lining
of the retina; age-related disorder; peripheral vision is preserved
macular degeneration
contraction of pupil; is a normal process unless related to

paralysis of the dilator of the eye (paralytic miosis), caused by spasms (spastic miosis) or due to spinal disease (spinal miosis)
miosis
physiologic or morbid dilatation of pupil
mydriasis
nearsightedness; occurs when eyeball is elongated and light
rays focus at a point in front of retina
myopia
involuntary, rapid, rhythmic movement of eyeball that can

be horizontal, vertical, rotatory or mixed; symptom of systemic illness, such

as multiple sclerosis or intoxication; can also occur as a result of riding a
circular ride or gazing fixedly at an object
nystagmus
swelling or edema of optic disc, usually as a result of
intracranial pressure, malignant hypertension, or thrombosis of a retinal vein
papilledema
abnormal intolerance to light
photophobia
impairment of vision due to old age; caused by decrease

in the power of accommodation which causes the near point of distinct
vision to be removed further from the eye
presbyopia
thick triangular piece of tissue, pale in color, that extends medially from the nasal corneal border to the inner canthus
pterygium
drooping of upper eyelid from paralysis of third nerve or from
sympathetic innervation
ptosis
degenerative noninflammatory diseases of retina
retinopathy
inflammation of the sclera
scleritis
area of loss or depressed vision within visual field, surrounding an area of normal vision
scotoma
deviation of eye which the patient cannot control; is present when the direction of gaze of the 2 eyes is not the same
strabismus
adhesion of the iris to cornea or lens
synechia
inflammation of all or part of uveal tract or choroid; commonly involves the other tunics as well (the sclera,cornea, and retina)
uveitis
covering membrane or tissue of organ or part; tunica
tunic or tunica
soft yellow spot or plaque occurring on eyelids, often in groups; xanthelasma
xanthoma palpebrarum
xanthelasma also called...
xanthoma palpebrarum
dryness of the conjunctiva and cornea due to a vitamin A deficiency
xerophthalmia