Drs. Ivy and Krasno reason that if the eye’s arteries are narrowed, as shown by the flicker test, it is probable that other arteries, including those of the heart, are similarly affected.

by Kelly Koopmans, KOMO News Anchor Wed, April 5th 2023 at 11:16 AM ...

Critical flicker fusion occurs when the observer can no longer distinguish between changing visual stimuli, like two colors of light flickering at increasing frequencies, the approach used by the ...