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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You're right, though, that IR leakage from DPSS modules is a big issue. E.g. here's my cheapo 100mW green through an IR-pass filter from across the room, seen with an IR-pass webcam. I certainly wouldn't want to be waving this around anyway, but yeah.pic.twitter.com/8EQnFjVn6U
This is also why my original DPSS-module-based DIY laser projector had an external IR-cut filter in front. Also, I've noticed things getting worse. I used to have a 15mW green that actually had an internal discrete IR-cut filter, but they've been increasingly cutting corners.
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Fun fact: you can xenon-pump one of those Nd:YVO4+KTP blocks from a DPSS laser pointer by just sticking it in front of a pocket camera's flash. The resulting beam is surprisingly well collimated, even with no lens.pic.twitter.com/3DXbCyYaQ4
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