jh_MacLeod
Contributor
The stickonbifocals site appears to be a land version of Dive Optix. It's the water-adhesion idea that doesn't work all that well in a dive mask. If you flood your mask, you're likely to lose your lenses. And if you don't flood your mask, well, you rinse the defog out of it, don't you?
I got a pair of Dive Optix a couple of years ago. I put one in my old mask, that I carry as a backup, and one in my primary Atomic Aquatics Frameless mask. I had read some threads on problems with sticking, so I carefully followed the instructions. That seems to be the key, as neither ever came loose, wet or dry.
However, I did remove the one from the AQ Frameless mask. The problem was that the mask has such a low volume and the glass is so close to the eye, that if you put the Dive Optix in the lower corner of the mask as I had, the angle is so extreme that the "viewing results" weren't satisfactory. I would have had to put the Dive Optix too much "in front" of my eye to make it usable. The one I put in my old mask still works fine, because the angle isn't so extreme.