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#Amsler grid test software

The lines should appear to be straight and continuous from top to bottom and side to side. If your eye is functioning properly, you should be able to see the center white dot and the four corners and sides of the grid. During the entire test, you should have one eye covered, stare at the center of the grid and only see one red oval.ĥ. To view the chart at the proper distance, slowly move in toward your monitor until one of the two red ovals FIRST disappears.Ĥ. With the uncovered eye, stare at the white dot in the center of the grid.ģ. View the chart at arms distance and cover one eye. Wear the glasses you normally wear when reading.Ģ. Use it to monitor your vision between visits to an eye care professional.ġ. A prescription is required to register with apps related to SDH.The Amsler Grid is a test for macular degeneration.

#Amsler grid test software

If the software detects any changes, the app notifies the eye doctor that prescribed the app. Using smart technology, a user can test themselves at home twice a week on their phone or tablet. MyVisionTrack is one iOS app that utilizes this method to easily track signs of macular degeneration. Shape Discrimination Hyperacuity (SDH) is an electronic method to quantify visual distortions.Foresee Home is an example of a medical device that can be prescribed by your eye doctor to be used in your home. However, PHP does tend to have a higher rate of false-positive tests in healthy individuals, which means that when tested positive, the individual actually does not have the disorder. Small studies suggest that PHP testing is more accurate in identifying age-related macular degeneration. Preferential Hyperacuity Perimeter (PHP) testing is available home medical devices to help identify age-related macular degeneration.However unlike with the Amsler grid, the shape and size of the distortion are not able to be determined. M chart (metamorphopsia chart) can be helpful in identifying both horizontal and vertical distortions.This is helpful in identification of macular degeneration. This allows identification of disease in half a degree. Grid 7 is similar to grid 1 except at the center around the large central dot there is another smaller grid.This can be helpful in identifying fine visual distortions near the center of your visual field.

Towards the black dot in the center, the horizontal lines are closer than in grid 5.

Grid 6, while similar to grid 5, has a white background and black lines.

This can be particularly helpful if you have reading difficulties. The horizontal lines can help determine distortions related to curved sections of the cornea.

Grid 5 uses a black background with white horizontal lines with a white dot in the center.

This grid uses a black background with a large central white dot with randomly placed smaller dots throughout the grid.

Grid 4 is used to differentiate between blind spots and distortions.

This grid is helpful in identifying disorders that have an associated red desaturation such as pituitary tumor causing partial blindness, toxic maculopathy, or toxic optic neuropathy.

Grid 3 is identical to grid 1 except there is a black background with red lines and a red dot.

This will help for focusing on the center dot if you have a central scotoma (blindspot in the middle of your visual field).

Grid 2 is an overlay that you can place over the basic Amsler grid with four diagonal lines.Grid 1 is the basic version that is most common of the Amsler grids.