People think of sun protection as skin protection, seldom have eye protection in mind. As a matter of fact, researches show that eyes are sensitive to UV rays which would do harm to eyes and cause eyes diseases. Thus, delicate eyes need our special care in heat summer days.
Never direct view sun, especially when it is strong. Eyes are very fragile. Short-term direct view to sunlight will result in an immediate shadow in eyes.Long-term direct view to sunlight will cause pain, tears, inflammation and blurred vision and even hurt retina.
It is well known that eyes are the most sensitive part to the ultraviolet radiation and they can widely absorb UV rays of different wavelengths. The UV rays with the wavelength of 280nm are most harmful to the cornea, which would result in conjunctivitis. The 290-400nm wavelength UV ray can cause biggest damage to the lens, which is also the reason for cataract. Surveys show that if you bask yourself in the sun for one more hour every day, the rate that you get cataract increase 10%.And now we should talk about some precautions.
When you are outgoing in summer, remember to wear broad-brimmed hat or use umbrella, a pair bifocal glasses is most effective in protecting your eyes. It's important to note that the bifocal sunglasses should be good in respect of quality. Poor sunglasses are not helpful in protecting your eyes; instead, they may cause a lot of problems to eyes. Buy a pair of anti-ultraviolet sunglasses when summer comes so that your eyes will be safer. Medical studies have certified that lenses in grey are best as grey have little influence on the effect of vision but effective in anti-UV. Those who wear contact lenses can also choose those with anti-VU code which can block 90% UV rays. It would be safer to add a pair of progressive eyeglasses. At noon, the sun is strongest and your skin and eyes are at highest risk. The best way to protect you is to keep indoors.