Everything about The Amsler Grid totally explained
The
Amsler grid, used since
1945, is a grid of horizontal and vertical lines used to monitor a person's central
visual field. It is a diagnostic tool that aids in the detection of visual disturbances caused by changes in the
retina, particularly the
macula (for example
macular degeneration,
Epiretinal membrane), as well as the optic nerve and the visual pathway to the brain.
In the test, the person looks with each
eye separately at the little dot in the center of the grid. Patients may notice that they don't see the lines as straight, or lines are missing,...
Amsler grids can be obtained from an ophthalmologist or optometrist and may be used to test one's vision at home.
The original Amsler grid was black and white. A color version with a blue and yellow grid is more sensitive and can be used to test for a wide variety of visual pathway abnormalities, including those associated with the retina, the optic nerve, and the pituitary gland.
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