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31 terms

Assisting in Ophthalmology and Otolaryngology

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blepharitis
inflammation of the glands and lash follicles along the margins of the eyelids
conjunctivitis
an inflammation of the conjunctiva that is usually caused by an infection or allergy; also known as pinkeye
chalazion
a small cyst resulting from the blockage of a meibomian gland (sebaceous gland) that lubricates the posterior margin of each eyelid
hordeolum
a stye; localized purulent infection of a sebaceous gland of the eyelid usually caused by staphylococcal infection
ophthalmologist
a physician who specializes in the diagnosis and treatment of the disorders and diseass of the eye. Licensed; can diagnose eye disorders,prescribe meds,conduct eye screenings adn prescribe glasses or contact lenses and perform optic surgery
optometrist
Not a medical doctor. Licensed and has a degree as a Doctor of Optomety (O.D) Can conduct eye exams,diagnose vision problems and eye diseases, and treat visual defects through corrective lenses and eye excersices.
opticians
trained to fill prescriptions written by ophthalmologists and optometrists for corrective lenses by grinding the lenses and dispensing eyewear
hyperopia
farsightedness; refractive error that does not allow the eye to focus on nearby objects
myopia
nearsightedness; the condition in which parallel rays of light are brought into focus in front of the retina, rather than on it
presbyopia
the lens of the eye becomes less flexible and the ciliary muscles weaken, causing the eye to have difficulty changing the point of focus from distance to near Results in difficulty seeing at reading level. Bifocals
diplopia
Double vision.
photophobia
abnormal sensitivity to light
otosclerosis
formation of spongy bone in the labyrinth of the ear, often causing the auditory ossicles to become fixed and unable to vibrate when sound enters the ears.
Ophthamology
the science of the eye and its disorders and diseases
cones
structures found in the retina that make the perception of color possible
strabismus
failure of the eyes to track together
nystagmus
a constant,involuntary movement of one or both eyes
presbycusis
the hearing loss that affects aging people caused by a reduced number of receptor cells in the organ of Corti
radial keratotomy
radial pattern of incisions in the cornea that cause the cornea to bulge
refraction
refers to the ablility of the lens of the eye to bend parallel light rays coming into the eye so the rays are simultaneously focused on the retina
malleus incus stapes
the auditory ossicles or bones; the middle ear
macular degeneration
a progressive deterioration of the macula lutea that causes loss of centeral vision so that the patient can see only the edges of the visual field
organ of corti
organ located in the cochlea; contains receptors (hair cells) that receive vibrations and generate nerve impulses for hearing
semicircular canals
three canals within the inner ear that contain specialized receptor cells that generate nerve impulses with body movement
menieres disease
causes swelling and edema in the endolymphatic sac(located in the inner ear), with an overproduction or collection of excess endolymph (fluid in the semicircular canals)
wet macular degeneration
Has a very acute onset and rapid progression. Occurs when new blood vessels behind the retina form and leak blood and fluid into the macula
dry macular degeneration
Painless and develops slowly affecting sharp vision over time so that reading or other activities require fine detailed vision become impossible. Caused by the breakdown of light sensitive cells in the macula region.
otitis externa
"swimmer's ear"; affects the external canal and is caused by dermatologic conditions, such as seborrhea or psoriasis, trauma to the canal, or the continuous use of earplugs or earphones.
otitis media
an inflammation of the normally air-filled middle ear, resulting in a collection of fluid behind the tympanic membrane
Serous otitis media
occurs because of a buildup of clear fluid in the middle ear with patients complaining of a full feeling and some hearing loss.
Suppurative Otitis Media
purulent fluid is present in the middle ear, with fever,pain, and hearing loss. Cause is often associated with an upper respiratory tract infection that has spread through the eustachian tube into the middle ear or with an allergic reaction