Chapter 11 (Vocabulary) Eye Flashcards
Oculus
OD
OS
OU
Eye, plural is oculi oculus dexter (right eye) oculus sinister (left eye) oculus uterque (both eyes)
The accessory or adjoining anatomical parts of an organ.
Accessory or adjoining anatomical parts of the eye are the structures outside the eyeball, including: (6).
Adnexa (ad-NECK-sah) - term is plural
Orbit, eye muscles, eyelids, eyelashes, conjunctiva, and lacrimal apparatus.
Healthcare practitioner who designs, fits & dispenses lenses for vision correction.
optician
A physician who specializes in diagnosing and treating the full spectrum of diseases and disorders of the eyes, from vision correction to eye surgery.
ophthalmologist
Holds a doctor of optometry degree & provides primary eye care, including diagnosing eye diseases and conditions, and measuring the accuracy of vision to determine whether corrective lenses are needed.
optometrist
Drooping of the upper eyelid that is usually due to paralysis.
ptosis [The term blepharoptosis has the same meaning.]
A nodule or cyst, usually on the upper eyelid caused by obstruction of the sebaceous gland. It is a type of granuloma.
chalazion
The eversion (turning outward) of the edge of an eyelid. This usually affects the lower lid, thereby exposing the inner surface of the eyelid to irritation & preventing tears from draining properly.
ectropion
The inversion (turning inward) of the edge of an eyelid. This usually affects the lower eyelid and causes the eyelashes to rub against the cornea.
entropion
Also known as a stye, is a pus-filled & often painful lesion on the eyelid resulting from an acute infection in a sebaceous gland.
hordeolum
Swelling of the tissues surrounding the eye or eyes. This can give the face a bloated appearance & cause the eyes to be partially covered by the swollen eyelids. This swelling is associated w/ conditions such as allergic reactions, nephrotic syndrome, or cellulitis.
periorbital edema
Aka, pinkeye, is an inflammation of the conjunctiva that is usually caused by an infection or allergy.
conjunctivitus (CI)
An inflammation of the lacrimal gland caused by bacteria, viral, or fungal infection. Signs & symptoms of this condition include sudden severe pain, redness, & pressure in the orbit of the eye.
dacryoadenitis
The bleeding between the conjunctiva and the sclera. This condition, which is usually causes by an injury, creates a red area over the white of the eye.
subconjunctival hemorrhage
Aka, dry eye, is drying of eye surfaces, including conjunctiva. This condition is often associated with aging. It can also be due to systemic diseases such as rheumatoid arthritis or to lack of vitamin A.
xerophthalmia
Inflammation of the uvea causing swelling and irritation. It can potentially lead to blindness.
uveitis [Uvea is the pigmented layer of the eye. It has a rich blood supply & consists of the choroid, ciliary body, and iris.]
This inflammation of the uvea affects primarily structures in the front of the eye. This condition has a sudden onset & may last 6-8 weeks.
iritis [Most common form of uveitis]
An injury, such as a scratch or irritation, to the outer layers of the cornea.
corneal abrasion
A pitting of the cornea caused by an infection or injury. Although these ulcers heal with treatment, they can leave a cloudy scar that impairs vision.
corneal ulcer
Damage to the retina as a complication of uncontrolled diabetes.
diabetic retinopathy
Inflammation of the cornea. This condition can be due to many causes, including bacterial, viral, or fungal infections.
keratitis
Inflammation of the sclera. This condition is usually associated with infections, chemical injuries, or autoimmune diseases.
scleritis
A condition in which the pupils are unequal in size. This condition can be congenital or caused by a head injury, aneurysm, or pathology of the central nervous system.
anisocoria
The loss of transparency of the lens that causes a progressive loss of visual clarity. The formation of this condition is associated with aging; however, this condition can be congenital or due to an injury or disease.
cataract (CAT)
Particles of cellular debris that float in the vitreous humor and cast shadows on the retina. Occur normally with aging or in association with retinal detachment, retinal tears, or intraocular inflammation.
floaters, aka vitreous floaters
Presence of what appears to be flashes of light, or flashers. These are often caused by damage to the eye or migraine headaches.
photopsia
The contraction of the pupil, normally in response to exposure to light, but also possibly due to the use of prescription or illegal drugs.
miosis
The dilation of the pupil. The causes may include diseases, trauma (injury), or drugs.
mydriasis (opposite of miosis)
An involuntary, constant, rhythmic movement of the eyeball that can be congenital or caused by a neurological injury or drug use.
nystagmus
Swelling and inflammation of the optic nerve at the point of entrance into the eye through the optic disk. This swelling is causes by increased intracranial pressure & can be due to a tumor pressing on the optic nerve.
papilledema, aka choked disk
The separation of some or all of the light-sensitive retina from the choroid. If not treated, the entire retina can detach, causing blindness. These conditions can be caused by a head trauma, aging, or from the vitreous humor separating from the retina.
retinal detachment (RD), aka detached retina
Progressive degeneration of the retina that affects night and peripheral vision. It can be detected by the presence of dark pigmented spots in the retina.
retinitis pigmentosa
A group of diseases characterized by increased intraocular pressure that causes damage to the retinal nerve fibers & the optic nerve. This increase in pressure is caused by a blockage in the flow of fluid out of the eye. If untreated, this pressure can cause the loss of peripheral vision and eventually blindness.
glaucoma (G), (glc)
The trabecular meshwork gradually becomes blocked, causing a buildup of pressure. Symptoms of this condition is not notices by the patient until the optic nerve has been damaged; however, it can be detected earlier through regular eye examinations, including tonometry and visual field testing.
open-angle glaucoma, aka chronic glaucoma [most common form of glaucoma]
The opening btw the cornea and iris narrows so that fluid cannot reach the trabecular meshwork. This narrowing can cause a sudden increase in the intraocular pressure that produces severe pain, nausea, redness of the eye, and blurred vision. W/out immediate treatment, blindness can occur in as little as two days.
closed-angle glaucoma, aka acute glaucoma
A gradually progressive condition in which the macula at the center of the retina is damaged, resulting in the loss of central vision, but not in total blindness.
macular degeneration (MD)
Type of macular degeneration: occurs most frequently in older people & is the leading cause of legal blindness in those older than age 60.
Age-related macular degeneration
Type of macular degeneration: accounts for 90% of these cases, is caused by the slow deteriation of the cells of the macula.
Dry macular degeneration
Type of macular degeneration: damage to the macula that develops as a complication as the disease progresses. This damage is caused by the formation of new blood vessels that produce small hemorrhages that usually result in rapid and severe vision loss.
Wet macular degeneration
The perception of two images of a single object. It is sometimes a symptom of a serious underlying disorder such as multiple sclerosis or a brain tumor.
diplopia, aka double vision
Blindness in one-half of the visual field.
hemianopia
The inability to distinguish certain colors in a normal manner. This is a genetic condition caused by deficiencies in or the absence of certain types of cones in the retina.
monochromatism
Is a condition in which an individual with normal daytime vision has difficulty seeing at night.
nyctalopia, aka night blindness
Excessive sensitivity to light and can be the result of migraines, excessive wearing of contact lenses, drug use, or inflammation.
photophobia
The condition of common changes in the eyes that occur with aging. With age, near vision declines noticeably as the lens becomes less flexible and the muscles of the ciliary body become weaker. The result is that the eyes are no longer able to focus the image properly on the retina.
presbyopia
A disorder in which the eyes point in different directions or are not aligned correctly, because the eye muscles are unable to focus together.
strabismus
A type of strabismus characterized by an INward deviation of one or both eyes.
esotropia, aka cross-eyes
A type of strabismus characterized by an OUTward deviation of one eye relative to the other.
exotropia, aka walleye
Focusing problem that occurs when the lens and cornea do not bend light so that it focuses properly on the retina.
refractive disorder
Any error of refraction in which the images do not focus properly on the retina.
ametropia
A type of ametropia: A condition in which the eye does not focus properly because uneven curvatures of the cornea.
astigmatism (AS)
A type of ametropia: Is a defect in which light rays focus beyond the retina. This condition can occur in childhood, but usually causes difficulty after age 40.
hyperopia, aka farsightedness
A type of ametropia: Is a defect in which light rays focus in front of the retina.
myopia, aka nearsightedness [my= greek word for shortsighted]
The inability to see.
blindness [Although sight remains, legal blindness is the point at which, under law, an individual is considered to be blind. A commonly used standard is that a person is legally blind when his or her best-corrected vision is reduced to 20/200 or less.]
A dimness of vision or the partial loss of sight, especially in one eye, without detectable disease of the eye.
amblyopia
An abnormal area of diminished vision surrounded by an area of normal vision.
scotoma, aka blind spot
Used to measure visual acuity. The results for each eye are recorded as a fraction with 20/20 being considered normal.
Snellen chart (SC) [The first number indicates the standard distance from the chart, which is 20 feet. The second number indicates the deviation from the norm based on the ability to read progressively smaller lines of letters on the chart.]
An examination procedure to determine an eye’s refractive error so that the best corrective lenses can be prescribed. This term also refers to the ability of the lens to bend light rays so they focus on the retina.
refraction
The unit of measurement of a lens’ refractive power.
diopter
A diagnostic test performed to determine losses in peripheral vision. Peripheral means occurring away from the center.
visual field testing [Blank sections in the visual field can be symptomatic of glaucoma or an optic nerve disorder.]
Is the use of an ophthalmoscope to visually examine the fundus (back part) of the eye. This examination includes the retina, optic disk, choroid and blood vessels.
ophthalmoscopy, aka funduscopy
This is required in preparation for the opthalmoscopic examination of the interior of the eye. “Artificial enlargement” of the pupils is achieved through the use of medicated drops.
dialation
Medication placed into the eyes to produce temporary paralysis, forcing the pupils to remain dilated even in the presence of bright light.
mydriatic drops
A diagnostic procedure in which a narrow beam of light is focused onto parts of the eye to permit the ophthalmologist to examine the structures at the front of the eye, including the cornea, iris, and lens. Often fluorescein staining is used to help detect foreign bodies or an infected or injured area of the eye.
slit-lamp ophthalmoscopy [SLE- Slit-lamp examination]
A radiographic study of the blood vessels in the retina of the eye following the intravenous injection of a fluorescein dye as a contrast medium. The resulting picture are used to determine whether there is proper circulation in the retinal vessels.
fluorescein angiography (FA), (FAG) [produces an angiogram]
What does the acronym PERRLA stand for?
Pupils are Equal, Round, Responsive to Light and Accommodation [This diagnostic abbreviation, and any abnormally here could indicate a head injury or damage to the brain.]
The surgical incision into the orbit (bony socket). This procedure is performed for biopsy, abscess drainage, or removal of a tumor or foreign object.
orbitotomy
The partial or complete suturing together of the upper & lower eyelids to protect the eye when the lids are paralyzed and unable to close normally.
tarsorrhaphy
The surgical replacement of a scarred or diseased cornea with clear corneal tissue from a donor.
corneal transplant, aka keratoplasty
The removal of an eyeball, leaving the eye muscles intact.
enucleation
May be fitted to wear over a malformed eye or to replace an eyeball that is either congenitally missing or has been surgically removed.
ocular prosthesis, aka artificial eye
The surgical removal of a portion of the tissue of the iris. This procedure is performed to treat closed-angle glaucoma.
iridectomy
The surgical procedure to treat myopia. During the surgery, incisions are made in the cornea to cause it to flatten. These incisions allow the sides of the cornea to bulge outward and thereby flatten the central portion of the cornea. This brings the focal point of the eye closer to the retina and improves distant vision.
radial keratotomy (RK)
A silicone band or sponge used to repair a detached retina. The detached layers are brought closer together by attaching this band onto the sclera, or outer wall, of the eyeball, creating an indentation or buckle effect inside the eye.
scleral buckle
The removal of the vitreous humor and its replacement with a clear solution. This procedure is sometimes performed to treat a retinal detachment or when diabetic retinopathy causes blood to leak and cloud the vitreous humor.
vitrectomy
The general term used to describe the surgical removal of a cataract-clouded lens.
lensectomy
The use of ultrasonic vibration to shatter and remove the lens clouded by cataract. This is performed through a very small opening, and the same opening is used to slide the intraocular lens into place.
phacoemulsification
Is the surgical implanted replacement for a natural lens that has been removed.
intraocular lens
Refractive errors in the eye can often be corrected with lenses that alter the angle of light rays before they reach the cornea.
corrective lenses
Type of corrective lens used for myopia (nearsightedness):
Corrective lens used for hyperopia (farsightedness):
concave lens (curved inward) convex lens (curved outward)
Refractive lenses that float directly on the tear film in front of the eye. Rigid gas-permeable lenses cover the central part of the cornea, and disposable soft lenses cover the entire cornea.
contact lenses
Uses a focused beam of light to create a hole in the iris of the eye. This procedure is performed to treat closed-angle glaucoma by creating an opening that allows the aqueous humor to flow btw the anterior and posterior chambers of the anterior segment of the eye.
laser iridotomy
Used to treat open-angle glaucoma by creating openings in the trabecular meshwork to allow the fluid to drain properly.
laser trabeculoplasty
Is used to treat vision conditions, such as myopia, that are caused by the shape of the cornea. During this procedure, a flap is opened in the surface of the cornea and then a laser is used to change the shape of a deep corneal layer.
LASIK, Laser-Assisted in Situ Ker-atomileusis [in situ means in its original place]
The use of a laser to treat some forms of wet macular degeneration by sealing the leaking or damaged blood vessels. This technique is also used to repair small retinal tears by intentionally forming scar tissue to seal the holes.
photocoagulation
Is used to reattach the detached area in a retinal detachment. Lasers are used to remove clouded tissue that can have formed in the posterior portion of the lens capsule after cataract extraction.
retinopexy
A type of retinopexy - a gas bubble is injected into the vitreous cavity to put pressure on the area of repair while it heals.
pneumatic retinopexy
The process whereby the eyes make adjustments for seeing objects at various distances. These adjustments include contraction (narrowing) and dilation (widening) of the pupil, movements of the eyes, and changes in the shape of the lens.
accommodation
The simultaneous inward movement of the eyes toward each other. This occurs in an effort to maintain single binocular vision as an object comes nearer.
convergence
The normal relationship btw the refractive power of the eye and the shape of the eye that enables light rays to focus correctly on the retina.
emmetropia (EM) (em)
The ability of the lens to bend light rays so they focus on the retina.
refraction, aka refractive power
The ability to distinguish object details and shape at a distance.
acuity (means sharpness) [VA= Visual Acuity]
The part of a routine eye examination in which intraocular pressure (IOP) is measured.
Tonometry
An exam of how two eyes work together, used to assess binocular vision. One eye at a time is covered while the patient focuses on an object across room.
Cover Test
