Blue,white LEDs and Blue-light hazard

[Archimelo]

Hello, i am a 29 years old male. My question is about blue LEDs and blue-light hazard. I didnt aware of blue-light hazard before and yesterday stared at blueish white LEDs a couple of times (15-20 times i think) at close distance. (8-10 cm) LEDs are in a keystring flashlight and powered by 2 watch batteries, and i think they are low-power LEDs but not sure. They are not right in front of my eye, i looked them at an narrow angle. I didnt stare them for long, about 4-5 seconds each time. After some googling i found some info about blue-light hazard but not sure did i receive any damage to my photoreceptor cells. I didnt find any change in my vision. No red eyes, no irritation. How long can u safely exposure to a LED light before taking any damage to your retina or photoreceptor cells? Can u notice eye damage from blue-lights? Is there any feel of pain or eye redness, watery eye? I know that i am sounded a bit paranoid but really worried. Did i damage my eye even at minimal degree? Sorry about my poor english and thanks in advance.

[joceanbizk]

A related discussion, Who will help us to get away from dangerous lighting --LED? was started.

[Michael J Kutryb, MD]

I seriously doubt you did any damage.  Any time you look even momentarily at the sun - you would catch maybe a million times more light energy than the LED light you looked at.  You probably catch more energy looking at your computer.  I would not give it much worry.

MJK MD