I didn't time how long but I would say 30 seconds to several minutes. I  
read that most accupuncture points can be triggered by treating each ear for  
only 30 seconds. My knee is still sore after knee replacement and most use 
of  the Leds are treating my knee.
Brickey
 
 
In a message dated 5/4/2012 9:34:31 P.M. Pacific Daylight Time,  
tita_...@yahoo.com writes:

Am interested in how long did you treat each eye with LEDs from V.   I have 
V's LEDs  too  660-850.  Am still trying to figure  out how to use it.  Am 
not so sure how many minutes to use on each  spot.