Once happy with the choice of vendor, there are other aspects that should be addressed. First and foremost is making sure that the shades in question provide the type of protection that is expected from a brand name. Protection is, after all, the key purpose of shades so while the frame and lenses may look great, if the pair is not a genuine designer brand they will not benefit the eyes at all.

There is one key threat to the eye that needs to be dealt with, namely ultraviolet rays. These UV rays are made up of UVA, UVB and UVC rays, with UVA and UVB arguably the most damaging. UVB are believed to lead to the development of cataracts in the eye, as well as formations of pterygium and pinguecula. UVA, meanwhile, has been linked to the development of skin cancer, liver spots and aged skin, particularly around the eyes.

Of course, direct sunlight to the eye can result in blindness, though this is rarely a problem in everyday life. However, ensuring that the highest level of protection from dangerous elements of UV light is essential, which is why lenses providing not less than 99 percent protection is necessary.

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