Understanding The Uv Protection Factor Of Your Sunglasses

Sunglasses are great in more ways than one. Theyindustry is UV400 - across the board - which
can compliment your appearance while preventingprotects the eyes from 98 per cent of the sun's
you to have to squint while outside on a sunny day.ultraviolet rays. And statistics based on testing results
But sunglasses are not simply a fashion accessory tofrom inexpensive sunglasses as compared to the
be taken lightly. They are actually of majormore expensive brands show that even sunglasses in
importance for protecting our eyes from the sun'sthe $5 and below range, provide the same amount
UV rays which can lead to diseases of the eye whenof protection as the more costly varieties. So, the
exposed to them over time.good news is, you don't have to pay more for the
The ultraviolet radiation element in sunlight is dividedbest level of protection. And for those who wear
in two basic areas - UVA and UVB. Sunglasses blockprescription sunglasses, something else you might be
both of these types of rays. What exactly is UVAinterested in knowing is that the UV level is the same
and UVB you ask? Well, UVA represents thefor both those and the store bought versions.
ultraviolet radiation that passes through the Earth'sAnd for even further comfort and assurance, you
ozone layer, reaches our skin and can lead tomight be happy to know that sunglass manufacturers
premature aging. UVB are also ultraviolet rays, buthave to follow certain FDA regulations. They have to
are absorbed, in great amount, by the ozone layer.comply with impact requirements - not saying that
Still, they are very harmful and can contribute to thesunglasses must be completely shatterproof, but that
cause of skin cancer and cataracts.they will at best, withstand a moderate impact.
The lenses of a pair of sunglasses should be darkSunglass manufacturers also have to follow labeling
enough to reduce the glare of bright light, but not soregulations. No doubt if you've ever bought a pair of
dark that they distort colors in objects, and obviouslysunglasses in your lifetime, you've had to peal that
not so dark that they inhibit your vision. The point isremovable sticker off the front of one of the lenses
that as long as the lenses are properly tinted, youreither before you put them on or afterward when
eyes will be protected. You don't have to go 'crazy'you realize that something's obstructing your view.
looking for lenses that are so dark that they not onlyThey say you get what you pay for. Well, if you pay
block out the sun's UV rays, but block out the actualfor a pair of sunglasses, you're paying for good eye
sun itself.health.
The standard UV protectant level in the sunglass