Hi, my Pimax is somewhat blurry as well. Can't use the unit for anything except showing the tutorial, and even at that it's a problem trying to get it to work.
But if and when I get it to work or get a replacement that does, I hate the idea of "having to wear" glasses to see clearly.
Since there's no adjustment and glasses are the only fix, here's what I suggest. I used the lenses from my reading glasses. Had two pair, so I removed the lenses from one pair and carefully affixed the lenses over the Pimax lenses making sure the curve matches the curve of the puma lenses, otherwise the two lenses would touch each other in the center.
This totally fixed the blurry vision. So what ever type of glasses you need to use, and if they work for you wearing them, if you can pop out the lenses and affix them over the pimax lenses, works like a charm.
Hint the larger the lense which can cover the pimax entirely is the best way.
If you use reading glasses and have two different numbers for your eyes, just go to the dollar store and buy two pair. One pair that matches one eye, and one that matches the other.
Take lense out of one pair, and then the other, and it's cheap, and works like a charm. Get the biggest lenses you can find like aviator type or similar.