1. When taking off your glasses, please hold your temples with both hands and take them off in the parallel direction on both sides of your cheeks. If you take it off with one hand, it will destroy the left and right balance of the mirror frame and cause deformation.
2. If the glasses are uncomfortable or the screws are loose, it may be that the frame is deformed, which will burden the nose or ears and easily loosen the lenses. It is recommended to go to a specialty store for plastic surgery regularly.
3. Do not use it during strenuous exercise. Resin lenses may be broken due to strong impact, which may easily cause eye and face injuries. It is recommended not to use it during strenuous exercise.
4. Don't use worn lenses. It is recommended not to use lenses with scratches, stains and cracks. Otherwise, you can't see clearly because of scattered light, which will lead to decreased vision.
Don't look directly at the sun or strong light, even if the lens has chromatic aberration, otherwise it will hurt your eyes.
6. The folding frame should start from the left. Most frames are designed by folding from the left temple, so if the right temple is folded first, it is easy to deform the frame.
7. Rotation method If the glasses are temporarily placed, please put the convex surface of the glasses upward. If the convex surface of glasses is placed downward, the lens will wear.
The answer comes from official website, a North-South travel network.