A patient's vision is recorded as 20/30 when the Snellen eye chart is used. The nurse interprets these results to indicate that:
The patient can read at 20 feet what a person with normal vision can read at 30 feet.
The patient can read from 30 feet what a person with normal vision can read from 20 feet.
At 30 feet the patient can read the entire chart.
The patient can read the chart from 20 feet in the left eye and 30-feet in the right eye.
The Correct Answer is A
A. A vision of 20/30 means that the patient can read at 20 feet what a person with normal vision can read at 30 feet, indicating mild visual impairment.
B. This reverses the explanation of 20/30 vision and is incorrect.
C. This option incorrectly describes the Snellen chart results, which measure clarity of vision at specific distances, not entire chart reading ability.
D. This option confuses visual acuity for each eye; Snellen scores do not indicate different distances for each eye.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
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Correct Answer is D
Explanation
A. Blepharitis: Inflammation of the eyelid margins, typically associated with itching, burning, and crusting, but not localized pustules.
B. Dacryocystitis: Inflammation of the lacrimal sac, causing swelling near the inner canthus, not on the lid margin.
C. Chalazion: A painless lump or cyst inside the eyelid, not typically painful, red, or swollen at the lid margin.
D. Hordeolum (Stye): A stye is a localized infection of a sebaceous gland at the eyelid margin, causing pain, redness, and swelling.
Correct Answer is A
Explanation
A. Posterior tibial: The posterior tibial pulse is palpated just posterior to the medial malleolus (inner ankle).
B. Femoral: The femoral pulse is assessed in the groin area, not near the ankle.
C. Popliteal: The popliteal pulse is located behind the knee, not near the ankle.
D. Dorsalis pedis: The dorsalis pedis pulse is palpated on the top of the foot, not near the ankle.
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