When measuring distance visual acuity, the medical assistant should instruct the patient to do which of the following?
Stand 25 feet from the Snellen chart.
Allow them to squint if necessary.
Keep both eyes open while using the occluder.
Start with the bottom line of the Snellen chart and work upward.
The Correct Answer is C
A. Stand 25 feet from the Snellen chart. The standard distance for testing visual acuity with a Snellen chart is 20 feet, not 25 feet. Testing at 25 feet would not provide accurate results.
B. Allow them to squint if necessary. Squinting can artificially improve vision, leading to inaccurate results. The patient should be instructed to avoid squinting during the test.
C. Keep both eyes open while using the occluder. The patient should use the occluder to cover one eye but keep both eyes open during the test. This ensures that each eye is tested individually without any pressure or distortion from closing the other eye.
D. Start with the bottom line of the Snellen chart and work upward. The patient should start from the top of the Snellen chart and work downward. Starting from the bottom would likely result in frustration and inaccurate assessment as the lines become increasingly difficult.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Spina bifida: Spina bifida is a congenital condition, not an indicator of child abuse.
B. Malnutrition: Malnutrition can be a sign of child abuse or neglect, as it may indicate that a child is not receiving adequate care or nourishment.
C. Respiratory syncytial virus: Respiratory syncytial virus (RSV) is a viral infection and not typically associated with child abuse.
D. Hypertension: Hypertension is not commonly linked to child abuse and is not an indicator of abuse in this context.
Correct Answer is B
Explanation
A. 9 to 13 g/dL: This range is below the normal hemoglobin values for an adult male and may indicate anemia.
B. 14 to 18 g/dL: This is the normal range for hemoglobin in an adult male, reflecting healthy oxygen-carrying capacity of the blood.
C. 19 to 22 g/dL: This range is above the normal values and may indicate polycythemia or other conditions leading to increased red blood cell production.
D. 23 to 26 g/dL: This is a significantly elevated level, which is rare and could indicate severe health conditions or laboratory error.
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