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Regarding Eyewear: i'm incredibly skeptical the 'laser proof goggles' on sites like banggood and even on amazon. i got the 500mW 405nm laser from banggood. its a rated classIIIB... and here's the blurb from an official UK laser company on laser safety:
Class 3B Medium / high power Visible / non-visible Direct intrabeam viewing of these devices is always hazardous. Viewing diffuse reflections is normally safe provided the eye is no closer than 13 cm from the diffusing surface and the exposure duration is less than 10 seconds. AEL = 500mW for a CW laser

Now im not going to run it without glasses (im not stupid) but im wondering if you only need to protect against refracted light would any tinted lenses that can reduce intesity work?