[Introduction to sunglasses]]

      sunglasses are a kind of eyesight health care supplies to prevent the damage to human eyes caused by strong sunlight stimulation. With the improvement of people's material and cultural level, sunglasses can also be used as special ornament for beauty or reflecting personal style.

[Common sense of use]]

      improper wearing of sunglasses is easy to suffer from eye diseases, and there is no need to wear sunglasses when the light is dark in cloudy days and indoors. Some people wear sunglasses even in dusk, evening, watching movies and TV regardless of the occasion, which will inevitably increase the burden of eye adjustment and cause eye muscle tension and fatigue, it can cause vision loss, blurring of vision, dizziness and other symptoms in severe cases. It is inappropriate to wear sunglasses for infants and children whose visual system is not well developed. In addition to glass cover sunglasses, other sunglasses lens materials have low wear resistance. Users should always pay attention to the surface of sunglasses and replace them in time when wear affects the clarity.

[Maintenance of sunglasses]]

      dazzling sunglasses make you active in the sun, so free. In fact, sunglasses can block the sunshine, but can't stop the pollution damage, so we should take care of them carefully, so as not to lose face. The method of maintaining sunglasses is just like maintaining glasses, which should be used to cleaning, folding and storing. However, sunglasses are often taken off and worn, and will be scratched accidentally. Therefore, there are some small details to remind you: When sunglasses have stains and adhesion, don't use nails to pick them, it will easily scratch the surface. When sunglasses are not worn, many people will hang them on their heads, collars or pockets conveniently. At this time, the range of body movements should not be too large to avoid tearing or damaging. Or someone will put it in the handbag. It is recommended that you put it in the hard glasses case first, and then put it in the handbag, so as not to be worn by small things such as keys, combs, Copper Board, or infected with cosmetics such as lipstick. Sunglasses worn by drivers are often conveniently placed on the dashboard or seat without wearing them. This is a very bad habit. In hot weather, sunglasses will be baked out of shape, especially for plastic mirror frame, it is better to take it off the car or collect it in the glasses storage box. No matter where you collect sunglasses, you must remember that the mirror face up.

[Glasses protection]]

      1. One-hand removal will damage the left-right balance of the frame and cause deformation. It is recommended that you hold the glasses legs with both hands and remove them in parallel directions along both sides of the cheek.

      2. Generally, the left mirror leg is folded first when taking and wearing, which is not easy to cause frame deformation.

      3. It is recommended to rinse the glasses with clean water and use a tissue to absorb the water, and then use a special glasses cloth to test the wiping. You need to hold the frame side silk on one side of the wiping mirror and gently wipe the lens, avoid damage to frames or lenses caused by excessive force.

      4. When you do not wear glasses, please wrap them in glasses cloth and put them in the glasses box. If it is temporarily placed, please put the convex surface of the glasses up, otherwise the lens will be easy to wear. At the same time, the glasses should avoid contact with corrosive articles such as repellents, toilet cleaner products, cosmetics, hair gel, drug s products, and avoid long-term direct sunlight and high temperature (above 60 ℃), otherwise, it is easy to cause deterioration, deterioration and discoloration of lenses and frames.

      5. Regularly go to a professional store for plastic adjustment. The deformation of the frame will burden the nose and ears, and the lenses are easy to loosen.

      6. Do not use glasses in intense sports to avoid lens breakage caused by strong impact, causing eye and facial damage; Do not use worn lenses to prevent vision loss caused by scattered light; do not look directly at the sun or strongly glare to avoid eye damage.

      7. Maintenance of sunglasses dazzling sunglasses make you active in the sun, so free. In fact, sunglasses can block the sunshine, but can't stop the pollution damage, so we should take care of them carefully, so as not to lose face. In fact, the method of maintaining sunglasses is just like maintaining glasses. Cleaning, folding and storage should form habits. However, sunglasses are often taken off and worn, and will be scratched accidentally. Therefore, there are some small details to remind you: When sunglasses have stains and adhesion, don't use nails to pick them, it will easily scratch the surface. When sunglasses are not worn, many people will hang them on their heads, collars or pockets conveniently. At this time, the range of body movements should not be too large to avoid tearing or damaging. Or someone will put it in the handbag. It is recommended that you put it in the hard glasses case first, and then put it in the handbag, so as not to be worn by small things such as keys, combs, Copper Board, or infected with cosmetics such as lipstick.