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Note that the only through the lens, oakley holbrook the color of color and the depth of the lens to judge the uv protection function is not correct, depth of color and protection function not related. For example the gray and brown the lens is often available through a lot the ultraviolet ray and infrared, only to be used in sunglasses, only because in production oakley holbrook sunglasses on sale is not change color.
 
A framework can still be through a few mirrors oakley holbrook sunglasses edge ultraviolet ray and after the reflection action surface lens, the framework for the protection of the eye lens is not completely, but the right contact lenses can be covers all the cornea and part of conjunctival, thus protect cornea, crystal, the retina and other groups.

For the current that appeared on the market or do oakley holbrook polarized not contain several including ultraviolet absorption material ultraviolet transmittance measurement and comparison, the discovery of ultraviolet absorption material, the contact lens to 280 380 nm ultraviolet absorption rate was 90%, and for work, travel and special sea SUNTACT contact lens design such as PMMA and ACURUE ultraviolet transmittance, about 75%, far bigger than ultraviolet oakley holbrook sunglasses cheap absorption type lens.