Originally Posted by roughshadow
P.S. what happens when a nv flares they brake purmanently or just shut off or just cause problems seeing?
Depends on the unit. Later models will be "auto gated", which means they have a circuit that will shut the unit down when it gets overloaded with light. Some units have an automatic gain control which will lower the amount of amplification the unit provides. Older units will "bloom", which is like what MadMorbius described. Too much light in the older units will kill them. Personally, although I think it would suck to have your unit get nuked at a game, you should be prepared for that happening. The unit I got wasn't auto gated but I put one in just because I knew some goof would be shining a Streamlight at me sooner or later.