Step 1: Let's get this right. If you're using a:
- 14" screen stay approximately 74cm from the screen
- 15" screen stay approximately 1m from the screen
- 17" screen stay approximately 1.50m from the screen
- 20" screen stay approximately 2.20m from the screen
When you are ready look at the picture below.
Cover one eye with your palm (don't press on the lid) and take the test then cover the other eye and take the test again.
If some of the lines appear grayer and some blacker, you probably have astigmatism; Consult an optician/eye care specialist.
EyE Test