Amsler grid Amsler grid The Amsler grid, used since 1945, is a grid of horizontal and vertical lines used to monitor a person's central visual field. The grid was developed by Marc Amsler, a Swiss ophthalmologist. It is a diagnostic tool that aids in the detection of visual disturbances caused by changes in the retina, particularly the macula (e.g. 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 small dot in the center of the grid. Patients with macular disease may see
Amsler sign diagnostic sign of FHI. This sign is named after the Swiss ophthalmologist Marc Amsler (February 15, 1891 – May 3, 1968). It is sometimes referred to as Amsler-Verrey sign to acknowledge the contribution of another Swiss ophthalmologist, Florian Verrey (1911–1976). Amsler sign Amsler sign also known as Amsler-Verrey sign is the name of the diagnostic finding seen in people with Fuchs heterochromic iridocyclitis (FHI). It is described as presence of blood (hyphema) in the aspirated vitreous fluid, in paracentesis of the anterior chamber, and is caused due to iris atrophy usually seen in FHI and exposure of the fragile iris