Only the replacement of glasses in other with the appropriate diopter rating is very bad solved. Due to the AntiFog coating and the pressure which you have to spend to use the glasses, it's easy to become a contamination of the glass. Cleaning without the coating to destroy is not really possible. But this does not detract from the spectacle itself and is part of the evaluation of the glasses. But as an indication of all the Gäser also order be important.
