The Amsler Grid is primarily used by a patient at home to monitor what?

• A. Changes in color vision
• B. Progressive changes in vision
• C. Refractive error
• D. Night vision

Answer: (B)

The Amsler Grid is used at home to monitor progressive changes in vision, particularly in the central area. By looking at the grid with one eye at a time and focusing on the central dot, a patient notes whether lines stay straight or become wavy, and whether any areas appear dark or missing. Distortions or blind spots indicate changes in macular function, signaling potential progression of macular diseases such as age-related macular degeneration or diabetic macular edema. It’s specifically about central vision, not color vision, refractive errors, or night vision, which require other tests. Regular at-home checks with consistent lighting and distance help detect changes early so a patient can seek evaluation promptly.