Is brightness of light harmful

[nanoWatt]

I asked this in one of the threads but it wasn't responded to, so I figured I'd start a new thread.

I'm just wondering. I have a Fenix T1 and I was outside with it set on Hi at night. I pointed it toward my back yard, from about 30 feet away, and I could see my dog in the light.

Will the T1 cause any damage to my dog's eyes from that far away. I'd say I shone it for a couple seconds to get a decent look.

 

[Valolammas]

Well, dogs' eyes are different from humans' eyes, but I'd be very surprised if you had caused any damage. It's not really all that bright compared to sunlight and LED light has a very low UV content. It's still not a good idea to stare at them or point them at any creature's eyes for prolonged periods, but a couple of seconds from that distance very probably didn't do any harm.

 

[scottaw]

I'd say from that far away, no. If it were hurting his eyes at all i'm sure he would have just turned away.

 

[chiphead]

I always thought there was a lot of UV coming of those LEDs. I'll find out with my up coming eye test, not from my light but for being type-2 diabetic.

chiphead

 

[yellow]

another stupid "eye damage from flashlight"-tread


(think of a zillion really powerful car hedlights You, the dog, the child, anyone else has been passed by for years,
and let alone staring into the brightest light souce avaliable (except for a laser) --> the sun
- any got blind?
thats what mother nature gave us the blinking REFLEX for. Can only be tricked by a laser)

 

[SilverFox]

Hello Yellow,

While I agree that this question comes up from time to time, I still maintain that the only "stupid" question is the question that is not asked...

Tom

 

[joema]

It's not a stupid question. Lots of good info in this thread, including posts from an ophthalmologist:
http://candlepowerforums.com/vb/showthread.php?t=109755

 

[jirik_cz]

I always thought there was a lot of UV coming of those LEDs. I'll find out with my up coming eye test, not from my light but for being type-2 diabetic.

chiphead

None UV light comes from white light LEDs. Maybe you are confusing LED with HID

 

[stonehold]

I use a low output light while walking my dog just to be safe. That 4-8 feet of leash is a little too short for long term nightly exposure to lots of lumens. We do a lot of walking where it's nice and dark so big light isn't necessary for him. And I always have another light or two or four if I need more just for me. If I'm over cautious with my pup....good. He's worth it.

 

[chiphead]

None UV light comes from white light LEDs. Maybe you are confusing LED with HID

You might have a point there.

chiphead