Which refractive error describes the vision of a patient for whom nearby objects are clear but objects at a distance are blurred?
Hyperopia.
Myopia
Astigmatism
Presbyopia
The Correct Answer is B
A. Hyperopia (farsightedness) causes difficulty seeing close objects.
B. Myopia, or nearsightedness, causes difficulty seeing distant objects clearly while nearby objects remain clear.
C. Astigmatism results in blurred vision at all distances due to an irregularly shaped cornea.
D. Presbyopia is age-related difficulty in focusing on near objects due to lens rigidity.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
B. Brain cells begin to die within 2 minutes if blood flow is interrupted, which is why rapid intervention is crucial during a stroke or other conditions that block cerebral blood flow.
A. 8 minutes is too long for brain cells to survive without oxygen.
C. 20 minutes is too long for brain cells to survive without oxygen.
D. 5 minutes is too long for brain cells to survive without oxygen.
Correct Answer is C
Explanation
A. The oculocephalic reflex test should cause the eyes to move in the opposite direction to the head turn, indicating intact brainstem function.
B. Movement of the eyes in an upward direction upon neck flexion indicates an abnormal response, suggesting a lesion.
C. A lesion could result in abnormal eye movement, as the eyes should move opposite to head movement.
D. Eye movement in the downward direction during neck extension is not a normal response and suggests a brainstem issue.
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