How do these “monitors-on-your-face” impact eye health?
Obviously the lenses make it seem like the virtual image is several feet away, so in terms of focusing it's no different from an actual object several feet away. If anything, it's probably healthier than a computer monitor that sits up closer. Plus, these glasses would actually be better than a VR headset in that the lenses can be designed so that the focal distance matches the virtual screen distance perfectly. (In VR, there's a mismatch for most distances.)
The only thing you might have to worry about is interpupillary distance (IPD) -- the space between the OLED displays needs to be adjustable to the space between your eyes. E.g. the Oculus Quest 2 has 3 settings for this, while the Quest 1 had a smooth adjustment. Adjustable IPD is essential, so I'd assume this either has it or they'll sell different versions for different IPD's?
VAC is not yet solved for VR, and while it can be mitigated it's still significant cause of eye strain.
Odds are, these glasses have that built-in. And it's going to be a lot better for your eyesight than staring at a screen 50cm away from your face.
The brightness is orders of magnitude less than daylight, there's zero retinal damage happening. They're not outputting UV so zero spectrum issues as well. There's also no "blue light overexposure", it's balanced.
Yes, cool color temperatures late at night can keep you up. Which is why 'night mode' exists, even the Oculus Quest 2 has it -- it's trivial to solve using software alone. But that's no different from staying up playing exciting video games or watching too much TV because of the cliffhanger at the end of each episode.
But nothing is "baking your eyes", sheesh. And using these for productivity during the daytime will affect your sleep and hormones precisely zero. Being outdoors on a sunny day, or even a cloudy day, is flooding your eyes with orders of magnitude more blue light than these dinky little screens.
https://health.clevelandclinic.org/are-led-lights-damaging-y...
You can literally measure the light spectrum from sunlight and from LED screens. Daytime sunlight is full of blue light, far more than from a screen. It's physically impossible for LED's to do some sort of damage that doesn't happen from regular walking around outdoors, because it's 100% known what they emit.
And an inch from your retina makes zero difference when the brightness is much less than daytime and the focal length is far. Because with lenses, as far as your eyes are concerned, the light is coming from far away.
You don't need to study long-term effects when the physics are 100% known here.
Again, blue light close to bedtime is the only thing that's different, and that's trivial to fix.