Since UV Index has been developed, more and more people pay attention to the risk of sunburn and the damage of UV radiation. UV rays have been classified into five categories and their respective risk levels are low, moderate, high, very high and extreme. Long time exposure to sunshine is closed associated with eye disasters, such as cataracts, macular degeneration, pingueculae and pterygia, phototkeratitis and so on. In addition, HEV (high-energy visible) radiation may cause low blood plasma levels of vitamin C and other antioxidants.

There are three types of UV rays, namely UVA, UVB and UVC, all of which are located just behind the violet portion of the visible spectrum. UVC rays are blocked by the earth’s atmosphere but UVB rays are quite dangerous. Spending much time outdoors, children with sensitive eyes need more UV protection from sunglasses.

Some people wonder that if inferior sunglasses with poor UV protection are more damaging than wearing no sunglasses. Although there are no confirming cases, it is to some extent reasonable that low-quality sunglasses are more harmful. Customers should always select quality sunglasses for best comfort and vision. Besides sunglasses, large hats are also helpful in offering sunlight protection outdoors.

Non-prescription sunglasses are popular because of their fashionable look and UV protective function. Though there are a lot of designer sunglasses without prescription and are purchased “over-the-counter” named “plano”, there are also sunglasses incorporated with regular eyeglass prescription.

Generally, children are vulnerable to eye injuries compared to adults because they spent more time playing outdoors. Ultraviolet (UV) rays and excessive sunlight bouncing off water and sand can lead to painful sunburn of the eyes in both children and adults. Wearing sunglasses during outdoor sports is essential, especially for children.

Recently, performance-oriented sunglasses are popular among the professional and amateur athletes during outdoor activities such as mountain biking, snowboarding, and kayaking. Durability and specialty are the most important requirements of these sunglasses. Sunglass manufacturers provide new products constantly to meet the requirement such as best vision under extreme environments.

Sunshine may make drivers uncomfortable during driving, so that most motorists resort to sunglasses for help. But for drivers with refractive vision problems, non-prescription sunglasses are not enough in providing good vision. In this condition, prescription sunglasses offer a convenient and satisfying solution.

Recently, more and more designers pay their attention to sunglass business. Nearly every notable designer is on his/her way to sunglass market. Even some of high-end designers, such as Chanel, Dior, and Prada, are launching sunglass lines. Sunglasses and fashion are linked closely.

UV protection sunglasses should be your first choice in choosing a new pair of sunglasses. If you are a regular outdoor activities participant, extended exposure to the sun’s UV rays may lead to eye damage, including cataracts and macular degeneration. There are three categories of invisible UV rays: UVA, UVB and UVC, among which UVC is the highest in energy. UV protection sunglasses with special treatment can block these harmful rays in different degrees.