Regarding the missing diopler adjustment, the mechanical design of these goggles is very complex inside, actually overlapping left and right views with polarized glass. It's really bizarre. The pupil width adjustment is to accommodate this overlapping of display. I'm puzzled why they designed it that way, but my guess is that's exactly why they couldn't include diopler adjustment, which alters the distance of the focal lens to the display, forward and backward. Moving the lenses left and right, while also moving them forward and back, is too much to do mechanically, I assume. That's my take on the design.
I have to use 6.00 readers to be clear, but wow, it's very clear and the visibility of the top and bottom, along the left and right extremes is the best implementation I've seen, even better than Headplay goggles. I'll be testing mine this weekend, they just arrived today. It's hard to find extreme X readers, but you can find a good selection of men's readers at Speert.com.
Hey msinger, great info, thanks for your initial post!
That sounds very plausible. The one question that it leaves is why the apparent distance was chosen to be so short. Since the goggles are simulating a distant view, a longer image distance would have been both more natural and easier to accommodate for older users.