1. When not wearing glasses, wrap the front and back of the glasses lens with glasses cloth to reduce the friction with the case (the glasses cloth should be kept clean), put the lens convex outwards, put it into the glasses case, and keep it properly.
2. The glasses should not be placed at high temperature for a long time, that is, the temperature above 60°C. High temperature can easily deform the lens, or cause cracks in the film layer on the surface of the lens.
3. During daily wear, you should take off and put on your glasses with both hands to avoid deformation of the frame and prolong the service life of the frame.
