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Ultraviolet—The Killer of Eye Health

When the weather cleared, and under the conditions of plenty of sunshine and fewer clouds, the UV index will be substantially increased; if the skin or eyes are not protected under prolonged exposure, it is likely to cause great harm. Exposure to excessive ultraviolet may lead skin to cancer or cataracts in severe case. The observatory, through government website, daily forecasts the UV information for the public that is to remind everyone should be vigilant of UV damage to the human body.

Most of the anti-UV lens in the market can only filter part of ultraviolet that eyes will still be affected by light pollution. Brand new anti-UV lens not only blocks ultraviolet rays, but also protects the eyes from injury.

Understanding of UV

wavelength shorter than 290nm can be effectively absorbed by the ozonosphere above the atmosphere.
wavelength between 290nm and 315nm under which the skin will be tanning; this radiation can be absorbed by the eye appearance; however, if the eyes expose to the sun for too long, it may result in injuries of eye appearance tissues and cause snow blind.
wavelength between 315nm and 380nm, as the boundary of the visible spectrum, it can penetrate the structure of the eye appearance and to be absorbed by crystalline lens. Currently, science has approved that UVA amount accumulated in lifetime may cause sunshine cataract.