the practice of professional water sports

Iris is a perplexing design part, a natural ability, the human eye to prevent infiltration excess light into the eye. However, sparkling in the sun light, even the iris of the eye becomes non-functional. Designed to absorb the sun surface luminous transparent and flat, such as water and snow reflection, polarized sunglasses for fishermen, divers, and skiers, to ensure a clear vision of under water or in the sky. These sunglasses are found in 1936 by Edwin H., the land of polarized lens. Lens reflex light polarized lenses specifically to polarization, so it can only vibration in one direction. In fact, polarized lenses can absorb reflection of nearly 97%, is a very useful safety device, even the Voyager of the seas and the practice of professional water sports.
Especially recommended for these individuals suffering from eye diseases, such as hyperopia and presbyopia. In recent years, these sunglasses are becoming more and more popular, jogging, walking, athletes and other sports fan. Even when driving at night, wearing polarized sunglasses can be very useful, because they can effectively reduce the glare reflecting automotive glass top. Therefore, people can easily avoid the frustration in the process of driving, to prevent any emergency or danger, and to ensure that may you be safe throughout the journey.
On the contrary, there are some disadvantages polarized sunglasses are often ignored, especially when the surface moves through the ice and snow cover. Users typically,, because it becomes difficult to distinguish ice patches and tycoon, and exercise, such as snow reflection alpine skiing sunshine as polarized sunglasses is invalid. In particular, it can be very dangerous when skiing, ice, polarized lenses. Secondly, it also predicted they could and polarized light present in the liquid crystal display (LCD), usually found both in the dashboard or automatic teller machines on the digital display screen, which makes them difficult to identify view.