Clinical Medical Assistant Exam Practice Question

Correct Answer: D

Rationale: In a Snellen eye exam, the standard distance for testing visual acuity is 20 feet. This distance allows for an accurate assessment of vision, as it is the optimal range for evaluating clarity and detail.

Option A (10 feet) is incorrect as it does not provide the necessary distance for standard testing, potentially leading to inaccurate results.

Option B (25 feet) exceeds the standard distance, which may not align with typical eye examination protocols.

Option C (15 feet) is also incorrect as it falls short of the recommended distance, compromising the reliability of the vision assessment.