When the glasses are not worn, it is best to put them in the case. The surface of the lens should not be in contact with hard objects, especially be careful not to put the temples upward and the mirror surface down. Especially the convex lens used by children with hyperopia or amblyopia, the optical center is easy to wear, and careless use of the lens to grind the lens into a ground glass shape will seriously cause form-deprivation amblyopia and bring difficulties to treatment. Secondly, the lens is best to be washed with water. Use 1-2 drops of detergent for washing dishes. After washing, rinse with clean water, dry it or blot it with a soft paper towel. It can also be wiped with a special fiber lens cloth for resin lenses, and the lens cloth is washed with water. Be especially careful not to wipe it with the corner of your clothes or hard cloth. Finally, you should develop the habit of removing and wearing the glasses with both hands. Long-term one-handed removal of glasses can cause the frame to be gradually distorted and deformed, causing the mirror surface to be skewed and even the inclination of the lenses on both sides is different, which causes the lens center to shift, and the prism effect appears — affecting vision , Eye fatigue.