Everything you said is true, but it doesn't change my point, which is that opthalmologist has no idea what she's talking about :-) In practice green lasers sell because they're bright, and they crank up the power because everyone wants moar bright, and that's all there is to it.
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The *powerful* ones are blue, but those look way less bright than the green ones. Also, I highly doubt that thing is actually a 30W diode. Those are just a dick measuring contest for idiots who almost never actually understand laser safety.
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Well, a NDB7K75 is 3.5W, but that's a good point. I wonder if any of those are using IR diodes in addition to a blue one.
End of conversation
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