Keep your eyes on the center dot. Click anywhere as soon as you notice a purple flash appear โ anywhere in the box. 10 flashes.
Useful field of view refers to the area around your fixation point where you can detect and process visual information without moving your eyes. A narrow UFOV is linked to higher accident risk in driving and reduced performance in fast-paced sports like basketball and hockey.
Related tests: Sports Vision Test or Crowding Challenge.