I just got my first pair yesterday and have loved them. However, later on in the evening I needed to clean them with the enclosed lens cloth. So some how or another I managed to dislodge the left lens and finally found it this morning. Talk about frustration!!!!!!! They really feel better than any other pair of glasses I’ve ever owned, bar none and they still haven’t been adjusted yet……go figure. The focusing is very intuitive and I can see will rapidly get “second nature”. I now am looking forward to an auxiliary set of sun lens.