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Sun glasses can damage eyesight
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Use of cheap plastic sun glasses can cause more harm than their absence.
Doctor says that in itself dark coloured glasses problem is not solved. There is a need to ensure that you do not miss ultraviolet radiation. This can be done at any centre optics. The fact is that the natural reaction of the pupil light-narrowing.
A exposed dark glasses, he, on the contrary, is increasing. And if plastic poor, it makes ultraviolet, and the eye is even greater dose of radiation. The full protection the harmful rays spoken words on the labels: UV100% or UV400.
The glass lenses easier. Glass itself delaying the ultraviolet.
For those who wear glasses to best suit glasses-chameleons. But for motorists glasses "chameleons" little longer: shading the lens occurs under the action of ultraviolet rays, and the windscreen of the vehicle to absorb.
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