In which condition is an Amsler grid most commonly used?

The Amsler grid is primarily used to assess vision specifically in conditions that affect the central vision, particularly macular degeneration. This grid serves as a valuable tool in detecting and monitoring changes in the central visual field, which can be significantly impacted by the degenerative changes associated with macular conditions.

In the setting of age-related macular degeneration, patients often experience distortion or loss of central vision, and the Amsler grid helps patients self-monitor these changes by providing a simple method to check for any wavering or blind spots. It provides a visual representation where any abnormalities can be noted and reported to their eye care provider.

Other conditions like glaucoma, cataracts, and retinal detachment do not primarily affect the central vision in the same manner as macular degeneration does, which is why the Amsler grid is less relevant for monitoring those conditions.