Astigmatism is a common visual disorder. The symptoms vary from person to person, but they are often associated with difficulty in seeing certain details at any distance. What is the cause? A slightly irregular cornea that distorts the image perceived by the retina. This makes overall vision rather blurred. Thus, lines that cross each other or run parallel to each other are difficult to make out. People with astigmatism are often born with it. Take the test to see how well you see details.
How to carry out the test
Are you doing the test on a screen? You will see four small squares containing black stripes. The black lines run in different directions, but they are all parallel. Any visual confusion between these parallel lines could suggest astigmatism.
To perform this astigmatism test, position yourself at a normal distance from your screen. Cover your right eye without pressing on your eyelid and observe the image with your left eye. Do the same with your right eye.
Remember to adjust the brightness and contrast of your screen. The automatic settings usually give a good balance.
If in doubt, print out the test and attach it to the wall in front of you. You can also make an appointment with a Visilab optician for a professional test.
Do the black lines look sharp?
People with astigmatism have blurred vision both close up and at a distance. This makes details and contours particularly difficult to distinguish. This test focuses on the vision of parallel lines to detect possible confusion in seeing the black lines.
If you find it difficult to see the lines in detail or if some lines seem clearer than others, you may have astigmatism.
Since this disorder is often associated with myopia or hyperopia, a diagnosis is impossible from a simple online test. This is only the first step.
What is next?
An ophthalmological diagnosis of astigmatism is based on a more comprehensive and professionally conducted eye examination.
An optician will give you a full set of tests and detect any visual problem you may have.