What is an ambler grid and can i use it on the computer?

Check central vision: The amsler grid is a grid of horizontal and vertical lines used to monitor a person's central visual field. It is a diagnostic tool that helps detect visual disturbances caused by changes in the retina, especially the macula, such as in age-related macular degeneration. The site http://amslergrid.Org has a grid online.

Central vision test: The Amsler grid is used to determine the patterning of visual change and loss in the macular and foveal area. It is available directly on the computer and can be used to assess your macular function. It you see a problem, then check with a retinal specialist or ophthalmologist to evaluate this.