Practice Test Instructions
In the test you'll be presented with a series of visual challenges. Your job is to click on the part of the screen where you see a striped image.
It starts easy, but gets harder!
Test one eye at a time. (Keep the other one closed.)
Keep your eye focused on central area of the screen throughout the test.
Before beginning the test, press F11 to make your browser full-screen.
Click Below To Begin
The test usually lasts a few minutes and it ends automatically.
If you're not sure about the answer, just guess! Your eye may know more than you think!
Remember: As long as the test keeps going, you're getting some answers right!
For best results, use Chrome or Firefox web browser.
Take test in a room with normal levels of light. Avoid glare and bright lights in testing environment.
Position yourself so that, when comfortably seated, your forehead is 50 cm / 20 inches from the monitor.
Measure how wide the central quadrant of the test screen is. It should be very close to 4.5 cm or 1.75 inches. If necessary, adjust the size by using the scale menu available by scrolling down to the bottom of this screen.
Enter test screen scale factor: