Differentiate visual acuity from contrast sensitivity.

Differentiate visual acuity from contrast sensitivity.

• A. Visual acuity measures how well color is perceived; contrast sensitivity measures edge sharpness.
• B. Visual acuity measures the ability to discern high-contrast detail; contrast sensitivity measures the ability to detect lower-contrast differences across spatial frequencies.
• C. Visual acuity and contrast sensitivity are identical measures of vision.
• D. Visual acuity measures motion detection; contrast sensitivity measures depth perception.

Answer: (B)