LOS ANGELES, July 14 — Do you see Albert Einstein or Marilyn Monroe?

If you see the physicist, you probably have good eyesight.

But if you see the blonde bombshell, chances are it’s time to get your vision checked.

This video, created by the YouTube channel AsapSCIENCE, is a quick test to determine how good your eyesight is.

It also explains the science behind this optical phenomenon.

This simple test will let you know whether it is time to head to the optician. — Screen grab from YouTube
This simple test will let you know whether it is time to head to the optician. — Screen grab from YouTube