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Med-Surg Nursing - 21


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acoustic neuroma
a benign tumor that occurs where the acoustic nerve (CN VIII) enters the internal auditory canal or the temporal bone from the brain
reduced vision in an eye that is not corrected by refraction and does not have an obvious pathologic or structural cause
the absence of the crystalline lens
a chronic bilateral inflammation of the lid margins
an opacity within the crystalline lens
an inflammation of a sebaceous gland in the eyelids
an accumulation of keratinizing squamous epithelium in the middle ear
an infection or inflammation of the conjunctiva
crystalline lens
a biconvex, avascular, transparent structure enclosed in a capsule located behind the iris; ciliary body controls shape to bend light rays so that they fall onto the retina
agent that causes ciliary body muscle paralysis and paralysis of accommodation
removal of the eye
external otitis
inflammation or infection of the epithelium of the auricle and ear canal
a group of disorders characterized by (1) increased intraocular pressure and the consequences of elevated pressure, (2) optic nerve atrophy, and (3) peripheral visual field loss
an infection of the sebaceous glands in the lid margin
intraocular lens (IOL)
a small plastic lens that can be implanted either in the anterior or posterior chamber as a replacement for a lens removed for cataracts; provides very little optical distortion, especially compared with aphakic spectacles or even aphakic contact lenses
Jaeger chart
a chart used to test near visual acuity
an inflammation or infection of the cornea that can be caused by a variety of microorganisms or by other factors
a non-inflammatory, usually bilateral disease of the cornea that is familial but has no exclusive inheritance pattern
an inflammation of the inner ear affecting the cochlear or vestibular portion of the labyrinth or both
laser photocoagulation
the use of an intense, precisely focused light beam, such as the argon laser, to create an inflammatory reaction
Meniere's disease
a disease characterized by symptoms caused by inner ear disease including episodic vertigo, tinnitus, fluctuating sensorineural hearing loss, and aural fullness
agent that causes pupillary constriction
agent that causes pupillary dilation
the fixation of the footplate of the stapes in the oval window that results in decreased hearing acuity
hearing loss associated with aging
refractive error
defect of the refracting media of the eye that prevents light rays from converging into a single focus on the retina
retinal detachment
a separation of the sensory retina and the underlying pigment epithelium, with fluid accumulation between the two layers
Snellen chart
a chart used to test far visual acuity
a condition in which the patient cannot consistently focus two eyes simultaneously on the same object

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