Photochromic sunglasses

Prescription sunglasses can also be called correct sunglasses, including myopia, hyperopia and presbyopia vision correction function compared to the conventional sunglasses. The fact is, there are problems many people run into a more or less eyes. We strongly hope by the market degree of sunglasses.
Considering the manufacturing technology of lens, including colors and lens prescription sunglasses photochromic color, can be divided into two categories.
The lens and the color remains the same, all the time. Any color in the rainbow, can be added to the lens, as long as you like, gray, green, blue, etc.. Typically, dark color better block harmful rays and light color is used to increase your fashion, so if you were exposed to strong light as in the plateau or the most at the time, we recommend that you wear and dark sunglasses. In addition, some color may have its special function. For example, the Yellow Lens striker is the best choice, because the so-called "blue blockers" reduced haze, make the target object more clearly. The most widely used in sunglasses color is gray, brown, green, because of their function as well as in the prevention of common ultraviolet.
Lens with a photochromic tone can automatically be outdoor darken, and keep the same room, which is based on the amount of their exposure to UV light. However, different enterprises may make the lens in different ways, in all transition lenses may be one of the best. Transition lens is suitable for over-the-counter and prescription sunglasses, because all the components of the lens on the uniform color change, regardless of high refractive index lens. They also provide a wnviroment between a rapidly changing light and dark. Photochromic sunglasses, color in addition to the common wear application red, can use in the medical field, in order to help doctors in the treatment of ocular disorders, so as to improve their field of vision.