What does the Amsler Grid help assess in a patient's vision?

The Amsler Grid is primarily used to assess the central visual field, making it particularly valuable in detecting defects or distortions in central vision, which can be indicative of macular degeneration or other retinal issues. When a patient looks at the grid, they can identify any areas that appear wavy, blurred, or missing, which helps healthcare professionals evaluate the integrity of the macula and monitor changes over time.

Its design, featuring a grid pattern with a central dot, encourages patients to fixate on the dot while assessing their ability to perceive the straight lines of the grid. This focus on central vision differentiates it from tests assessing peripheral vision, color discrimination, or night vision, as those other aspects involve different testing methodologies and focus areas. Thus, the Amsler Grid's specific role in assessing central visual field integrity makes it vital in eye care and diagnosis.