Temperature has no bearing on UV radiation UV is always present, and our eyes are always at risk of exposure. Can UV radiation damage eyes when it’s cold or cloudy? However, research indicates that the eye absorbs almost twice as much radiation during peak times for outdoor activities, which tend to be in the early morning (from 8 AM to 10 AM) and in the late afternoon (from 2 PM to 4 PM). UV radiation is strongest when the sun is at its most intense, between 10 AM and 3 PM. When doing activities in these environments, it is important to wear sunglasses and sunscreen. Water reflects up to 100% UV radiation, snow reflects up to 85%, sand and concrete reflect up to 25%, and grass reflects up to 3%. Recent studies suggest that UVA can also promote the development of skin cancers.Ĭan reflected sunlight still harm your eyes?Īccording to the Vision Council, reflected UV radiation is just as damaging as direct UV. It can penetrate deep into the skin and is also responsible for tanning and burning. ![]() UVA makes up close to 95% of the UV radiation reaching the Earth’s surface.While most UVB is filtered by the atmosphere, research has found that it significantly promotes the development of skin cancers. Medium-wavelength UVB is very biologically active, but it can’t penetrate past superficial skin layers it can, however, cause tanning and burning.Fortunately, UVC is completely filtered by the atmosphere and does not reach the Earth’s surface. UVC has the shortest wavelength and is the most dangerous and biologically active.The following information on each comes from the World Health Organization: They differ in wavelength as well as biological effects. ![]() There are three types of UV radiation: A, B, and C. What are the different types of UV radiation? Exposure to UV radiation can immediately weaken vision and, over time, cause irreparable damage to the eyes and eyesight. UV acts on eyes very much the same as it does on skin: it can cause cancer of the eyes and eyelids, increase the likelihood of cataract formation, and sunburn your eyes. The sun is far and away the strongest source of ultraviolet (UV) radiation for Earth. UV & Eye Health How does sunlight damage your eyes?
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