"I think Styropyro might want to have a word with everyone in that room not wearing laser goggles at all times while those lasers are on...<br><a href=""https://www.youtube.com/watch?v=tozuzV5YZ7U&amp;t=3m20s"">3:20</a> and <a href=""https://www.youtube.com/watch?v=tozuzV5YZ7U&amp;t=5m02s"">5:02</a> look particularly sketchy.",(reply>), Step in, step out 🤷‍♂️😏✌,(reply>), I'm gonna trust the people who are working with them in the video, because they are right.,(reply>), I think they are responsible for their own safety and YouTube commenters don't need to pretend like they care about them.,(reply>), @TheReaverOfDarkness  How much mental gymnastics does it take to reach the arrogant yet false conclusion "If you follow crucial safety protocols around a dangerous class 4 laser that can blind and burn you, then you're being babysat"?,(reply>), Well from personal experience a 6 or 7 watt laser will not blind you from diffuse reflections unless you permit it. It may damage your eyes certainly but it won't straight up kill your vision immediately unless you stare at the dot on the wall for a while. Companies and laboratories are very strict for safety guidelines because nobody wants to get sued or be held liable for any bodily harm. From personal experience my eyes seem to be more damaged by sunlight reflecting off cars than any laser I've owned. If you are outside in the day the dot is hardly bright from 15 ft away, there are no noticable after images in my vision whereas I can look at a white surface outside and have them or a computer screen. That being said I would recommend always wearing safety glasses around class 4 lasers and never be in front of one like they do in the video that was sketchy.