Snellen acuity is classified as which type of acuity?

Snellen acuity is classified as which type of acuity?

• A. Recognition
• B. Resolution
• C. Hyperacuity
• D. Color

Answer: (A)

This question hinges on what the Snellen chart is actually testing: recognizing and identifying symbols at a distance. Snellen acuity requires you to name or indicate what letter you see, so the task relies on recognizing a familiar pattern and linking it to a stored representation of the letter. That makes it recognition acuity. In contrast, resolution acuity would involve distinguishing whether two close points or lines are separate, without needing to name what they are. Hyperacuity tasks probe extremely fine alignments beyond basic resolution. Color acuity measures hue discrimination, not letter recognition. So the Snellen chart best fits recognition acuity.

This question hinges on what the Snellen chart is actually testing: recognizing and identifying symbols at a distance. Snellen acuity requires you to name or indicate what letter you see, so the task relies on recognizing a familiar pattern and linking it to a stored representation of the letter. That makes it recognition acuity.

In contrast, resolution acuity would involve distinguishing whether two close points or lines are separate, without needing to name what they are. Hyperacuity tasks probe extremely fine alignments beyond basic resolution. Color acuity measures hue discrimination, not letter recognition. So the Snellen chart best fits recognition acuity.