This may not be the best place to ask, and I may be able to find my answer if I search. If so, I'm sorry.
I haven't ever owned a 405nm laser (crazy for how long I have been into lasers, I know...) but I have been wondering about them after this Arctic has come out. A lot of talk has been going around on how it's right at the UV wavelengths and how it can cause problems with vision (making green not well defined) and causing cancer, blah blah. Not sure how much of that is true with the 445.
Still, I'm guessing this has to do with biological like changes going on. Being that 405nm is almost dead at the UV starting range and is in concentrated form, should you really have to be worried about it with 200-400mw? Sure you shouldn't be pointing at your self at that power anyway, but if it's biological, does it really have to be powerful to cause any problems in the future? It almost sounds like it's the wavelength mainly, power just makes it more severe.
Fact is though, if you have a 405nm laser, you will most likely get diffused reflections to come in contact with your skin, and you will probably look at the spot every now and then at good distances.
So maybe all this is just out to scare people and is bs, or maybe it has some truth, I dunno.
Answers? Thanks!