enquiries@neweyeco.com
Doesn't look like you are in Aust. however they may be able to help you.
I use a pair of glasses from this company based in Redcliffe Bris Qld.
I have found them really good after about 18 months of use.
The system is modular, so you can separate the frames, lenses, arms,straps etc. The key component is what they call the foil which contains your prescription. The foil can be put into different frames too.
I have found the system quite durable and effective. I have different tint lenses which are interchangeable and act as the sunglass side of things, behind which sits the prescription foil, behind that is a padded frame for stabilizing the foil and for comfort. If all that sounds bulky, it's not, they've done a neat job of the packaging.
The arms clip off and can be replaced with a strap which is what I use.
Being modular they can be pulled apart for quick and thorough cleaning.
If your foil is in good condition you can simply buy the other components separately and quite cheaply and slip the foil into a new frame for example.
Overall, I find these far superior and integrated and more suited to sailing than anything else I have tried including contacts. If you crash and burn a lot then you are still at risk of losing your investment.
Check the
www.neweyeco.com/ website and it will become clearer..
Good luck!