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Sight is one of our most valuable senses, which is why it is so important to take care of your eyes and perform eye examinations regularly. One such test is the Amsler test. Find out what the test is about, how to prepare for it and in what cases it is recommended to do the Amsler test.
What is the Amsler Test?
The Amsler test was first performed by the Swiss ophthalmologist Marc Amsler and hence its name. The test is primarily designed to test the vision in the fovea of the retina. A separate test should be performed for each eye. The test is based on the observation of a special mesh, called the Amsler mesh. The observation is made from a “reading” distance, ie about 28 cm. The Amsler Grid is a 10cm square that has been divided by intersecting lines 0,5cm apart. In the middle of the grid, a point is drawn to which your eyes should be directed during the examination. The test result is read on the basis of distortions and image irregularities that arise, for example, bending lines, changes in the size of squares or the presence of scotomas.
Amsler test – how the test works
During the examination, the doctor has an Amsler mesh at his disposal, although the examination can also be carried out independently at home, for example with the help of a previously printed Amsler mesh. During the examination, cover one eye and look at the point located in the center of the mesh. Then, without moving your eye, observe the rest of the mesh. If the macular retina is not diseased, all lines are seen correctly. Curves and other abnormalities are indicative of a disorder in the macula of the retina.
Amsler test – indications for performance
The indications for the Amsler test are primarily diseases of the central part of the retina, i.e. maculae, as well as the suspicion of such diseases. The primary indication for the Amsler test is the suspicion of macular degeneration. Other diseases that affect this part of the retina are: vein thrombosis, central retinal artery thrombus, and retinopathy.
What is a macula?
The macula is the part of the retina that faces the pupil. In the macula area there are so-called suppositories, or cells responsible for clear vision of objects. The fovea, which is located in the center of the macula, is responsible for the sharpest vision.
How to prepare for the Amsler test?
No special preparation is required for the Amsler test. However, it is worth remembering that such tests are better if we are in good shape, well rested, rested and we are able to focus properly. Therefore, you should not go to the Amsler test after a sleepless night or an overnight party with plenty of alcohol. The test is carried out at a distance that allows reading, so take your reading glasses with you if you wear them. It is also worth taking the results of previous eye tests and previous eyeglass prescriptions to analyze the progress of the disease or condition.