I've worn glasses since about age 9 and am entirely used to them- they are the first thing I put on and the last thing I take off. My 'natural' vision is so bad that I could not find my glasses without my glasses... No desire for contact lenses. I am, however, approaching the age where bifocals are going to be in my future- and based on what I have seen and heard, am NOT looking forward to them. A friend got the "Superfocus" adjustable lens glasses and is largely happy with them. I like the idea of being able to clearly see a full field of view and not be dealing with tilting my head, having certain zones of view out of focus, etc. however- I never deliberately abuse my glasses, but I do end up being rough on them- I do a lot of DIY and outdoor activities and can be a bit of a klutz, so it is not unusal for my glasses to get thoroughly dirty, occasionally knocked off my head or whacked by something like a branch etc. I currently wear OSHA-approved frames because I've found that they hold up better for me than regular "consumer" frames, which never survived for much longer than a year I have googled around a substantial amount and while I can find various "impression" reviews of the Superfocus glasses, have not found anything about how robust/ durable the Superfocus frames/ adjustment mechanism are over the medium to long term. Anyone had any experience or know of any places I have not yet checked? Thanks!