The Astigmatism Test is based on the Red-Green Duochrome chart and is made with assistance from professional ophthalmologists. It is intended to identify if the user suffers from refractive errors in the vision. This is a common defect in the eye or in a lens caused by a deviation from spherical curvature, which results in distorted images, as light rays are prevented from meeting at a common focus. Very often astigmatism is accompanied with long sightedness or short sightedness.

How it works

During the test the user is offered a set of 2 images for each eye. They need to identify whether the lines on the images are blurry or clear.


Based on answers, the results will indicate whether or not you suffer from refractive errors such as astigmatism.


If your results indicate you are suffering from astigmatism, make sure to visit an ophthalmologist after you take the test.

More information

Issues screened with this test

  • Astigmatism