Optionally, open your browser's JS to see your stats logged.
Bring your face close to the screen centred around the grey marker and look at it with one eye closed.
Click "Start Over" to begin the test.
A shape with a random color will appear from a corner and move
towards the marker. Keep your eye focussed on the grey marker. When the moving circle is close enough for
to be certain of the color, click anywhere in the test space. The distance travelled will be recorded and a
new moving circle will appear for another round.
Click the "Start Over" button to start a new session with a reset average.
This page is hosted using Github Pages. See the code in the Github