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People think of sun protection as skin protection, seldom have eye protection in mind. Actually, some studies suggest that UV rays are really harmful to eyes and may cause keratitis, cataracts, retinal damage and so on. For that reason, we ought to care our eyes especially in hot summer.
Never direct view sun, especially when it is strong. Delicate eyes are easily hurt.One may feel dizzy after looking up to sun for a short while. Direct view to sun for a long time may bring about damage to eye and retina, accompanied with pain, tears, inflammation and blurred vision.
It is believed eyes are the most sensitive part to the UV rays; they can absorb a broad range of wavelengths of ultraviolet rays.The ultraviolet radiation with 280nm wavelength does the most damage to the cornea, and it is the cause of conjunctivitis. The 290-400nm wavelength UV ray can cause biggest damage to the lens, which is also the reason for cataract. Studies suggest one is more likely to get cataract if he/she roasts in the sun more. And now we should talk about some precautions.
I want to purchase beads in quantities of 50, so can you recommend any online/eBay stores (or actual ones) that sell Swarovski crystal beads for cheap and often give quantity discounts? I’m looking for low prices as well as low postage to Canada.It's important to note that the swarovski beads should be good in respect of quality. Sunglasses of poor quality can't help in protection but result in injury to eyes. Buy a pair of anti-ultraviolet sunglasses when summer comes so that your eyes will be safer. 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 instructors will be Swarovski Ambassador, Val Hirata, and Eureka crystal beads own Walter Marczak! You can sign up for the session on the Innovative Beads Expo website or in person at the show.You'd better not go outside at noon when the sun is strong and are likely to threat the security of skin and eyes.