N3320 Test -1-3 Review Questions With Answers

N3320 Test #1-3 Review QUESTIONS WITH |\ |\ |\ |\ |\ |\




ANSWERS

How do you assess distant visual acuity? - CORRECT ANSWERS
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✔✔Have patient stand 20 ft away from Snellen or E chart and ask
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to read each line aloud
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What does 20/20 vision mean? - CORRECT ANSWERS ✔✔it means
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that a client can distinguish what a person with normal vision
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can distinguish from 20 ft away
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What is an abnormal finding associated with visual acuity? -
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CORRECT ANSWERS ✔✔Myopia -- impaired far vision
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2nd number will be higher
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20/200 indicates legally blind|\ |\ |\




How do you assess near visual acuity? - CORRECT ANSWERS
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✔✔Have patient hold vision chart 14" from eyes and cover one
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eye with an opaque card before reading top to bottom
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What is an abnormal finding associated with near visual acuity? -
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CORRECT ANSWERS ✔✔Presbyopia (impaired near vision)
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,patient has to move chart away form eyes to focus on the print
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Normal vision is 14/14|\ |\ |\




How do you assess for gross peripheral vision? - CORRECT
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ANSWERS ✔✔Confrontation Test |\ |\




Have patient cover one eye and stand 2 feet away
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HCP covers opposite eye and extends same arm as the eyes that
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is covered by the patient
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Patient should see the examiner's finger at the same time the
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examiner sees it |\ |\




How do you perform the POSITIONS TEST? - CORRECT ANSWERS
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✔✔Tests muscle strength & cranial nerve function
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Hold an object 12 in from patient's face
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Move the object through all 6 cardinal positions in a clockwise
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direction


observe eye movement -- should be smooth and symmetric in all
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directions

,What is an abnormal finding associated with the positions test? -
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CORRECT ANSWERS ✔✔Failure of the eyes to move in all
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directions indicates a muscle weakness or cranial nerve
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dysfunction


Nystagmus -- associated with an inner ear disorder, MS, brain
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lesions or narcotic use
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What is paralytic strabismus? - CORRECT ANSWERS ✔✔result of
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weakness or paralysis of one or more extraocular muscles
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Nerve affected with be on the same side as they eye affected
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6th nerve paralysis (Abducens): eye cannot look to outer side
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4th nerve paralysis (Trochlear): eyes cannot look down when
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turned inward |\




3rd nerve paralysis (Oculomotor): looks straight ahead
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What is an abnormal finding associated with the eyelids? -
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CORRECT ANSWERS ✔✔Ptosis (drooping eyelid)
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Myasthenia gravis |\




Weakened muscles or tissue |\ |\ |\




Congenital disorder |\

, Retracted lid margins |\ |\




Describe an abnormal finding associated with the eyelashes -
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CORRECT ANSWERS ✔✔Failure of lids to close
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Entropion - inverted lower lid
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Ectropion -- everted lower lid
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What is considered a normal position and alignment for the
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eyeball in the eye socket? - CORRECT ANSWERS
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✔✔symmetrically aligned without protruding or sinking |\ |\ |\ |\ |\




Describe an abnormal finding with the position of the eyeball. -
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CORRECT ANSWERS ✔✔Protrusion -- indication of Grave's Disease
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Sunken appearance -- indication of severe dehydration or wasting
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illnesses
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Explain how to inspect the bulbar conjunctiva and sclera -
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CORRECT ANSWERS ✔✔Have the patient look in all directions and
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observe for CLARITY, COLOR, & TEXTURE
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Should be clear, moist, and smooth
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