Snappy bifocal eyeglasses specially for charming women
Mention sun protection, most people think of skin protection, and rarely think of eye protection. In practice, researches indicate that eyes exposure to ultraviolet radiation will do injury and even cause diseases to eyes. Hence, for health sake, eyes deserve our special attention.
Don’t look directly into the sun. Eyes are more vulnerable. Short-term direct view to sunlight will result in an immediate shadow in eyes.Direct view to sun for a long time may bring about damage to eye and retina, accompanied with pain, tears, inflammation and blurred vision.
As is well known, eye is a delicate tissue that is sensitive to UV rays. It can absorb UV rays with various wavelengths. The 280-nm wavelength UV ray does the greatest injury to the cornea. It is likely to cause conjunctivitis.The ultraviolet radiation with 290-400nm wavelength causes great damage to the lens, and it is also the cause of cataract.Some studies have shown that if people expose to the sunlight for one more hour every day, the risk of cataracts will rises by 10%.So what can we do to prevent the injury?
Wear a set of hat or employ a parasol when you go outside. Meanwhile you can wear a pair of bifocal glasses which prevents direct sunlight to eyes. It is worth to note that the progressive glasses you buy should be good enough in quality. If you buy schlock sunglasses, instead of protecting eyes, you are doing harm to your eyes. You’d better choose a pair of quality sunglasses that can block UV rays. Medical research shows that it is unnecessary to choose lenses with too dark color. Grey and light grey are more effective in blocking UV rays. If you wear contact lenses, you can choose those with anti-UV function which can block 90% ultraviolet rays.Your eyes will be safer if you add a pair of progressive eyeglasses.You’d better not go outside at noon when the sun is strong and are likely to threat the security of skin and eyes.
