Presbyopia is:

Presbyopia is:

• A. Visual acuity decreases to 20/200 with Scotopic vision
• B. Visual acuity decreases to 20/40 with Scotopic vision
• C. Visual acuity increases to 20/20 with Scotopic vision
• D. Visual acuity remains 20/20 with Scotopic vision

Answer: (A)

Presbyopia is the age-related loss of the eye’s ability to adjust focus for close objects because the lens becomes stiffer. In dim or scotopic lighting, vision already relies on rods, which provide less sharp acuity than cones do in brighter light. When these two factors combine—reduced near focusing ability and reduced low-light clarity—the overall visual sharpness can drop significantly, which in some test contexts is represented as a severe loss around 20/200. That’s why this option is selected: it reflects a substantial decline in visual acuity under Scotopic conditions that aligns with the concept of presbyopia’s impact in low light. The other statements imply little to no change or only a modest change in acuity, which doesn’t fit how acuity typically worsens in low light for someone with presbyopia.

Presbyopia is the age-related loss of the eye’s ability to adjust focus for close objects because the lens becomes stiffer. In dim or scotopic lighting, vision already relies on rods, which provide less sharp acuity than cones do in brighter light. When these two factors combine—reduced near focusing ability and reduced low-light clarity—the overall visual sharpness can drop significantly, which in some test contexts is represented as a severe loss around 20/200.

That’s why this option is selected: it reflects a substantial decline in visual acuity under Scotopic conditions that aligns with the concept of presbyopia’s impact in low light. The other statements imply little to no change or only a modest change in acuity, which doesn’t fit how acuity typically worsens in low light for someone with presbyopia.