1. If the frame or lens is stained with dust, sweat, grease and other stains, please wash it with clean water or a special glasses cleaning liquid first, and then use a dedicated lens cloth to absorb the residual moisture in the same direction. To prevent wear of the lens, please do not wipe it directly with a dry lens cloth;
2. Please do not use warm water to clean the lenses;
3. To prevent wear and tear of the lens, please do not put the lens surface directly in contact with the desk;
4. Please wipe the glasses and store them in the glasses box properly when not wearing them;
5. Please do not store with hard or sharp objects to avoid scratching the lenses or other parts of the glasses.