Polarizing sunglasses can block 100% of harmful rays, so it can be used:
1. Health care: eye surgery patients, the need for a full range of protection, polarized sunglasses are the best choice.
2. Outdoor activities: such as skiing, fishing, water sports and so on, all need to be able to completely block the harmful rays of the sun glasses to avoid eye injury or fatigue.
3. Goggles