1. Polarized glasses is not usually the best. Polarizers are more suitable for driving. Most of lens exported to foreign countries are PC lens. The high-end Ray-Ban is made of tempered glass. In fact, they are not polarized.
2. Do not wear sunglasses indoors or in dark places. Although it’s cool, the pupils will always enlarge, causing fatigue and affecting vision.
3. If myopia is equipped with sunglasses, it is best to match one with your own glasses. This can't be done, especially in long-term wear.