Optical Test

An Amsler Grid is a simple, square grid of horizontal and vertical lines used to detect vision problems resulting from damage to the macula or retina—especially conditions like:

  • Macular degeneration

  • Diabetic retinopathy

  • Macular edema

What It Looks Like

It’s usually a grid of straight lines with a dot in the center (used as a fixation point). The whole thing is printed in black and white, often on paper or shown on a screen.

AmslerGrid-100x100-1

How it's Used

  1. You cover one eye.

  2. Stare at the central dot.

  3. Without moving your gaze, notice the rest of the grid.

What to Watch For

  • Wavy, blurred, or missing lines can indicate problems.

  • Dark or blank spots may also show abnormalities.

Why It's Important

It’s a quick at-home test or clinical tool to catch early signs of macular degeneration or other central vision issues before they become severe.