Which pattern is described by reduced contrast sensitivity?

Which pattern is described by reduced contrast sensitivity?

• A. Central field defect
• B. Peripheral field defect
• C. Reduced acuity
• D. Reduced contrast sensitivity

Answer: (D)

Contrast sensitivity is about detecting differences in light and dark. When it’s reduced, a person has trouble perceiving low-contrast information, like subtle shading or faint edges, even if high-contrast details look fine. This pattern isn’t about losing part of the visual field (central or peripheral field defects) or about how sharp details are (reduced acuity). It specifically describes difficulty with low-contrast stimuli. So the best description is reduced contrast sensitivity itself—you’d see the problem most in situations with low contrast, such as gray-on-gray text, foggy or glare-filled environments, or low-light reading.

Contrast sensitivity is about detecting differences in light and dark. When it’s reduced, a person has trouble perceiving low-contrast information, like subtle shading or faint edges, even if high-contrast details look fine. This pattern isn’t about losing part of the visual field (central or peripheral field defects) or about how sharp details are (reduced acuity). It specifically describes difficulty with low-contrast stimuli. So the best description is reduced contrast sensitivity itself—you’d see the problem most in situations with low contrast, such as gray-on-gray text, foggy or glare-filled environments, or low-light reading.