The Snellen chart is used to assess which aspect of vision?

The Snellen chart is used to assess which aspect of vision?

• A. Depth perception.
• B. Color vision.
• C. Visual acuity.
• D. Peripheral vision.

Answer: (C)

Visual acuity. The Snellen chart measures how clearly you can see details in your central vision at a distance. It uses progressively smaller letters at a fixed distance and identifies the smallest size you can correctly identify, which is expressed as acuity (for example, 20/20). This test specifically gauges sharpness of vision for detail, not depth perception, color vision, or the width of the visual field. Depth perception involves cues for judging distance, color vision uses color discrimination tests, and peripheral vision assesses the outer edges of the visual field.

Visual acuity. The Snellen chart measures how clearly you can see details in your central vision at a distance. It uses progressively smaller letters at a fixed distance and identifies the smallest size you can correctly identify, which is expressed as acuity (for example, 20/20). This test specifically gauges sharpness of vision for detail, not depth perception, color vision, or the width of the visual field. Depth perception involves cues for judging distance, color vision uses color discrimination tests, and peripheral vision assesses the outer edges of the visual field.