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Altered Sensory Fx
Patho
Term | Definition |
---|---|
Accomodate | Ability of the lens to change its shape. |
Presbycusis | Sensorineural hearing loss consist ant with aging; associated with tinnitus |
Pupil | Opening in the iris; controls the amount of light that enters the eye. |
Pure tone bone conduction | Used to evaluate the inner ear function, independent of the middle and outer ear function. |
Retina | Ocular structure located over the posterior two-thirds of the eye; contains photoreceptors. |
Rhodopsin | Photopigment produced by the rode of the retina |
Rods | Photoreceptor cells of the retina; produce the photopigment rhodopsin, allowing vision in dim light. |
Saccule | Structural component of the semicircular canal. |
Semicircular canal | Inner ear structures regulating balance; composed of the utricle and the saccule |
caloric test | test that uses warm and cool water or air irrigation to induce nystagmus: diagnostic of Meniere disease |
cataracts | clouding of the lens in the eye; causes blurred vision by scattering incoming light |
central auditory processing disorder | disorder involving an alteration in auditory signal processing to the brain |
cerumen | secretion by glands of the ear |
chorodial nevoascularization | formation of new blood vessels under the retina and macula; associated with wet (exudative) macular degeneration. |
ciliary body | occular structure producing the aqueous humor. |
ciliary muscle | regulates lens shape to focus an object at close range |
cochlea | bony structure located in the inner ear; important for hearing |
cochlear implant | artificial device surgically placed behind the ear to enhance hearing |
conductive hearing loss | hearing loss localized to the outer or middle ear; may be temporary or permanent. |
Tympanic membrane | located at the end of the ear canal opposite the external auditory meatus; structure marking the boundary of the middle ear; commonly known as the "ear drum" |
Tympanometry | measures the degree of movement of the tympanoc membrane to identify middle ear fluid, perforation, or cerumen blockage of the ear canal |
Utricle | structural component of the semicircular canal |
Uveal-scleral outflow pathway | route of reabsorption of a small quantity of aqueous humor |
visual processing | coordination of visual images in the brain during the sequence of steps from visual receptor signaling to cognitive recognition |
Wet (exudative) MD | macular degeneration characterized by the formation of new blood vessels under the retina and macula, known as choroidal neovasularization |