86 terms in this chapter
hearing
Right ear (auris dextra), Left ear (auris sinistra), Both ears (auris uterque). *SAFETY WARNING (TJC Do Not Use List): Easily confused with OD, OS, OU. Write out 'right ear', 'left ear', 'both ears'.*
disorder where the brain disregards images from the weaker eye and relies on those from the stronger eye; lazy eye
total deafness
acute otitis media
astigmatism
abnormal curvature of the cornea that distorts the visual image, blurring vision
measurement of hearing acuity at various sound-wave frequencies
ear
eyelid
noncontagious inflammation of the eyelash follicles and tiny oil glands along the margins of the eyelids
cataract
cloudiness or opacity of the lens due to protein deposits, resulting from aging, disease, trauma, or certain medications
blind spot in the center of the visual field surrounded by an area of normal vision
small, benign cyst in the eyelid formed by the distention of a meibomian gland with secretions
destructive cystic mass of cholesterol and epithelial cells that develops in the middle ear
electronic device surgically placed in the inner ear to provide a sense of sound to people with severe hearing loss
conjunctiva
inflammation of the conjunctiva; highly contagious forms are called pinkeye
pupil
cornea
tear, tear duct
progressive damage to microscopic vessels and structures of the retina in patients with diabetes, which may result in blindness
double
condition where the lower eyelid is turned outward and droops, exposing the inner surface
eyes, ears, nose, and throat
emmetropia (normal vision)
ears, nose, and throat
condition where the eyelid edges are turned inward, causing lashes to rub against the eye surface
extraocular movement
opacities in the vitreous humor that cast shadows on the retina, appearing as spots, threads, or cobwebs
glaucoma
sudden blockage of aqueous-humor outflow causing a rapid, painful increase in intraocular pressure; closed-angle glaucoma
aqueous humor drains too slowly, leading to a gradual, painless increase in intraocular pressure; primary open-angle glaucoma
acute focal infection of a sebaceous gland of the eyelid; commonly called a stye
vision defect where parallel light rays focus behind the retina (short eyeball); farsightedness
destructive retinal changes (hemorrhages, exudates) caused by severe hypertension
iris
inflammation of the cornea, associated with decreased visual acuity; untreated, it may cause blindness
progressive thinning and cone-shaped protrusion of the cornea, causing distorted vision and astigmatism
corneal transplant; surgical replacement of diseased corneal tissue with healthy donor tissue
inflammation of the inner ear labyrinth, causing severe vertigo; otitis interna
tear, lacrimal gland/duct
laser-assisted in-situ keratomileusis
corrected visual acuity of 20/200 or less, or a visual field of 20 degrees or less in the better eye
deterioration of the macula resulting in central vision loss; categorized as atrophic (dry) or exudative (wet)
macular degeneration
chronic inner ear disorder causing progressive hearing loss, severe vertigo, and tinnitus
vision defect where light rays focus in front of the retina (elongated eyeball); nearsightedness