an inflammation of the conjunctiva that is usually caused by an infection or allergy; also known as pinkeye
a small cyst resulting from the blockage of a meibomian gland (sebaceous gland) that lubricates the posterior margin of each eyelid
a stye; localized purulent infection of a sebaceous gland of the eyelid usually caused by staphylococcal infection
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
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.
trained to fill prescriptions written by ophthalmologists and optometrists for corrective lenses by grinding the lenses and dispensing eyewear
nearsightedness; the condition in which parallel rays of light are brought into focus in front of the retina, rather than on it
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
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.
the hearing loss that affects aging people caused by a reduced number of receptor cells in the organ of Corti
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
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
three canals within the inner ear that contain specialized receptor cells that generate nerve impulses with body movement
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.
"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.
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.