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Visual and Auditory SystemsMedical-Surgical Nursing-7th edition

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A thickened, triangular bit of pale tissue that extends from the inner canthus of the eye to the nasal border of the cornea is called...
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Pterygium
What causes Pterygium?
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Tissue damage of the cornea related to chronic exposure
Elderly people experience decrease of water content in the eye and atrophy of nerve fibers of the cornea. This results in...
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Decreased corneal sensitivity and corneal reflex
Accumulation of lipid deposits in the cornea results in _________ of vision.
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Blurring
As ciliary muscles become smaller and stiffer with age, what happens to a person's vision?
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They have a decrease in near vision and accommodation
Biochemical changes in lens proteins, oxidative damage, and chronic exposure to ultraviolet light leads to the development of _________ with advancing age.
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Cataracts
Age related macular degeneration as a result of vascular changes leads to a loss of ________ vision.
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Central
Liquefaction and detachment of the vitreous leads to the phenomenon known as...
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Floaters in the visual field.
________ are the photoreceptor cells that are stimulated in dark or dim environments.
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Rods
________ are the photoreceptor cells that are receptive to colors in bright environments.
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Cones
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Which part of the retina provides for the sharpest visual acuity?
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The fovea centralis (composed of ONLY densely packed cones)
The ________ is the part of the retina that is relatively free of blood vessels and has a high concentration of cones.
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Macula
Which systemic diseases that can potentially impact ocular health should a nurse specifically ask about during a health assessment?
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Diabetes, hypertension, Cancer, Rheumatoid Arthritis, Syphilis and other STDs, AIDS, muscular dystrophy, myasthenia gravis, MS, inflammatory bowel disease, hypothyroidism and hyperthyroidism (they all can impact vision).
Why is it important to determine if a client has had a history of cardiac or pulmonary disease when conducting a health history to ascertain the cause of eye problems?
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Glaucoma is often treated with Beta-adrenergic blockers which could cause a slow heart rate, decrease blood pressure and exacerbate asthma or emphysema.
Which eye conditions should a nurse inquire about during a visual health history?
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Strabismus, amblyopia, cataracts, retinal detachment, refractive surgery, glaucoma and/or any eye trauma.
Surgeries and/or trauma on the ________ can be significant when gathering health history data for an eye exam.
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Head
Some cold medicines can cause pupils to _________.
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Dilate
Antihistamines and decongestants are drugs that can cause ocular ________.
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Dryness
Related to the eyes, corticosteroids, thyroid medications, and hypoglycemic medications can contribute to the development of ______________.
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Cataracts and glaucoma
Why is a history of brain surgery in a client important to know when doing a visual health history?
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Brain surgeries can result in swelling which puts pressure on the optic nerve or tract, resulting in visual disturbances.
Which populations have a higher risk of damage to the optic nerve from glaucoma?
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African Americans and older people
  
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