18.4: Key Terms
- Page ID
- 111420
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\(\newcommand{\avec}{\mathbf a}\) \(\newcommand{\bvec}{\mathbf b}\) \(\newcommand{\cvec}{\mathbf c}\) \(\newcommand{\dvec}{\mathbf d}\) \(\newcommand{\dtil}{\widetilde{\mathbf d}}\) \(\newcommand{\evec}{\mathbf e}\) \(\newcommand{\fvec}{\mathbf f}\) \(\newcommand{\nvec}{\mathbf n}\) \(\newcommand{\pvec}{\mathbf p}\) \(\newcommand{\qvec}{\mathbf q}\) \(\newcommand{\svec}{\mathbf s}\) \(\newcommand{\tvec}{\mathbf t}\) \(\newcommand{\uvec}{\mathbf u}\) \(\newcommand{\vvec}{\mathbf v}\) \(\newcommand{\wvec}{\mathbf w}\) \(\newcommand{\xvec}{\mathbf x}\) \(\newcommand{\yvec}{\mathbf y}\) \(\newcommand{\zvec}{\mathbf z}\) \(\newcommand{\rvec}{\mathbf r}\) \(\newcommand{\mvec}{\mathbf m}\) \(\newcommand{\zerovec}{\mathbf 0}\) \(\newcommand{\onevec}{\mathbf 1}\) \(\newcommand{\real}{\mathbb R}\) \(\newcommand{\twovec}[2]{\left[\begin{array}{r}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\ctwovec}[2]{\left[\begin{array}{c}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\threevec}[3]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\cthreevec}[3]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\fourvec}[4]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\cfourvec}[4]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\fivevec}[5]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\cfivevec}[5]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\mattwo}[4]{\left[\begin{array}{rr}#1 \amp #2 \\ #3 \amp #4 \\ \end{array}\right]}\) \(\newcommand{\laspan}[1]{\text{Span}\{#1\}}\) \(\newcommand{\bcal}{\cal B}\) \(\newcommand{\ccal}{\cal C}\) \(\newcommand{\scal}{\cal S}\) \(\newcommand{\wcal}{\cal W}\) \(\newcommand{\ecal}{\cal E}\) \(\newcommand{\coords}[2]{\left\{#1\right\}_{#2}}\) \(\newcommand{\gray}[1]{\color{gray}{#1}}\) \(\newcommand{\lgray}[1]{\color{lightgray}{#1}}\) \(\newcommand{\rank}{\operatorname{rank}}\) \(\newcommand{\row}{\text{Row}}\) \(\newcommand{\col}{\text{Col}}\) \(\renewcommand{\row}{\text{Row}}\) \(\newcommand{\nul}{\text{Nul}}\) \(\newcommand{\var}{\text{Var}}\) \(\newcommand{\corr}{\text{corr}}\) \(\newcommand{\len}[1]{\left|#1\right|}\) \(\newcommand{\bbar}{\overline{\bvec}}\) \(\newcommand{\bhat}{\widehat{\bvec}}\) \(\newcommand{\bperp}{\bvec^\perp}\) \(\newcommand{\xhat}{\widehat{\xvec}}\) \(\newcommand{\vhat}{\widehat{\vvec}}\) \(\newcommand{\uhat}{\widehat{\uvec}}\) \(\newcommand{\what}{\widehat{\wvec}}\) \(\newcommand{\Sighat}{\widehat{\Sigma}}\) \(\newcommand{\lt}{<}\) \(\newcommand{\gt}{>}\) \(\newcommand{\amp}{&}\) \(\definecolor{fillinmathshade}{gray}{0.9}\)- acoustic neuroma
- benign tumor of the vestibular nerve
- anisocoria
- unequally sized pupils
- aqueous humor
- one of the clear fluids inside the eyeball
- astigmatism
- blurred vision caused by irregularities in the cornea or lens
- audiologist
- specialist in hearing testing and treatment
- audiometry
- comprehensive hearing test that measures a person’s response to frequencies and volumes of sound
- barotrauma
- rapid or extreme changes in air pressure that cause the eardrum to rupture
- cataract
- clouding of the lens within the eye
- cerumen
- earwax
- cholesteatoma
- growth of abnormal skin in the middle ear
- closed-angle glaucoma
- type of glaucoma in which the drainage angle between the cornea and iris suddenly becomes blocked, leading to a rapid increase in intraocular pressure and other severe symptoms
- CMV retinitis
- ocular infection caused by the cytomegalovirus (CMV) that primarily affects the retina
- conjunctiva
- thin, clear membrane that covers and protects the eye
- conjunctivitis
- inflammation of the conjunctiva
- corneal abrasion
- loss or disruption of the corneal epithelium, the outermost layer of the cornea
- corneal dystrophies
- group of inherited disorders characterized by abnormal deposits or changes in corneal structure
- corneal ulcer
- area of tissue breakdown in the cornea
- diplopia
- double vision
- Epley maneuver
- repositioning of the head through physical therapy to treat vertigo
- erythema
- redness of the skin or mucus membranes
- external otitis
- inflammation of the external ear
- hyperopia
- (also: farsightedness) the condition of seeing distant objects more clearly than closer objects
- keratoconjunctivitis sicca
- (also: dry eye) common ocular disorder characterized by insufficient tear production or poor tear quality, leading to dryness and discomfort of the eyes
- keratoconus
- progressive corneal disorder characterized by the thinning and distortion of the cornea, resulting in a conical shape
- mastoidectomy
- removal of infected cells from the mastoid bone
- mastoiditis
- infection of the mastoid bone behind the ear
- myopia
- (also: nearsightedness) the condition of seeing closer objects more clearly than distant objects
- myringotomy
- surgical incision in the tympanic membrane
- open-angle glaucoma
- type of glaucoma in which the drainage angle between the cornea and iris remains open but the fluid outflow is impeded
- otalgia
- ear pain
- otitis media
- (also: middle ear infection) prevalent condition caused by the invasion of microorganisms into the middle ear via the Eustachian tube
- otorrhea
- ear discharge
- otoscopy
- visual examination of the ear using an otoscope
- ototoxicity
- toxic effects of certain medications or chemicals on the structures of the inner ear, leading to hearing loss, balance problems, or other auditory-related symptoms
- pterygium
- raised thickening of the conjunctiva which extends into the cornea
- retinal vascular disorder
- condition that affects the blood vessels supplying the retina
- retinopathy
- disease of the retina
- tinnitus
- ringing or buzzing in the ear
- tonometry
- measurement of the pressure within the eyes
- tympanic membrane perforation
- ruptured eardrum
- tympanometry
- physical test to measure the function of the tympanic membrane
- tympanoplasty
- surgical reconstruction of the eardrum
- tympanostomy tube
- small tube placed within the tympanic membrane to prevent fluid buildup behind the ear