http://www.superfocus.com/The issue of eyeglasses is a pet peeve of mine. Like the gentleman in the vid mentioned, I have two pairs of glasses; one for reading/close work and another for mid-distance, couch to tv, and they help while driving.
Bi-focals made me nuts because of the need to move my head and were worse than useless in some postures. Plus, the lenses are no longer made with full field of vision across the bottom for reading; the "experts" have shrunk that to, at most, a 3/4 field in the center; at the least, a small dot.
Forget progressives! I want to know who decided that the best design was a narrow field of focus right up the center of the lens, which is why looking through right/left of the thing was so heavily distorted that one is constantly moving one's head instead of just one's eyes, which is the natural way we use our eyes!! I instantly couldn't tolerate them, despite being assured that I would "get used to them". Feh.
In the evening, I sometimes sit on the couch with my laptop, with the tv on, wearing both reading and mid-distance glasses at the same time so I can see the tv and use the computer; Pandora's version of "bi-focals".
The readers are glass, which has begun to pose a problem with frames. Current fashion (try bucking that!) dictates small frames and the glass lenses don't readily stay in them, but since I wear them constantly, (if they're not on my face, they're hanging around my neck) the wear and tear rules out plastic, although I'm as careful as I know how.
So, these superfocus look interesting to me too. I don't know that having to use the slider would be a nuisance, but the only way to tell would be a trial run. The round frame shape is not gorgeous either.
I'm going to consider the "risk-free trial". And thanks for bringing them to our attention.