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.
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Correct Answer is B
Explanation
A. Sitting behind a desk and looking at the computer: This posture may appear distant and disinterested, as it creates a physical barrier and lacks engagement.
B. Sitting on the edge of a chair and leaning forward: This body language conveys attentiveness and engagement, indicating care and interest in the conversation with the patient.
C. Standing across the room. Standing across the room can seem impersonal and distant, which may not effectively communicate care and interest.
D. Standing over the patient: Standing over the patient can be intimidating and may convey dominance rather than care and support.
Correct Answer is D
Explanation
A. Have the patient hold on to the wall while weighing. Holding onto the wall can be unsafe and can affect the accuracy of the weight measurement.
B. Position a walker over the scale. Positioning a walker over the scale can affect the scale's accuracy and the patient's balance.
C. Position a cane on the scale between her feet. Placing a cane on the scale can affect weight measurement and may not provide accurate results.
D. Have the patient sit in a chair on the scale. Weighing a patient sitting in a chair on the scale can provide an accurate measurement for patients with balance issues.