Use lukewarm water and a few drops of detergent to clean your lenses. A microfibre cloth is useful for drying.
(Please don’t use kitchen paper, your T-shirt, etc.)
Avoid exposing your spectacle lenses to high temperatures, such as you’ll find on the dashboard of your car. Glasses should also be protected from direct sunlight. Only mineral lenses are suitable for use in a sauna.
Lay glasses down on their frame, not on the lenses.
Store your glasses in a solid case when they’re not in use.
If you have natural horn-rimmed glasses, please do not use any cleaning products as they will cause the material to dry out over the longer term.