I will never go back
I have been wearing your interchangeable prescription lenses for past 6 years, I have found them more convenient to change them to suit the different weather conditions and the time of the shift from night to day times, it is as easy as swapping the glasses to the shade I need at the time. I am so pleased with them, I will never go back to ordinary glasses again. For a female they even look good and you can't tell they are prescription glasses.
New Eye Company