Loss of side vision is described as which pattern?

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

Answer: (C)

This question is about where in the visual field the loss occurs. Losing side vision means the outer areas of the field are impaired, which is called a peripheral field defect. The central field (the very center you look at) would be affected by a central field defect, not by side loss. Reduced acuity describes a clarity issue—how sharp what you see is—without specifying a location in the field. Reduced contrast sensitivity refers to judging differences in light and shade, again not about where in the field the loss happens. In practice, peripheral field loss can create tunnel vision and significantly impact mobility, and it’s commonly seen in conditions like glaucoma.