~FDA on Sunglasses 2012 ~
FDA on Sunglasses
Choose sunglasses that are labelled with a UVA / UVB rating of 100% to provide the most UV protection.
Do not mistake dark-tinted sunglasses as having more UV protection. The darkness of the lens does not indicate its ability to shield your eyes from UV rays. Many sunglasses with light-colour tints, such as green, amber, red, and gray offer the same UV protection as very dark lenses.
Children should also wear sunglasses that indicate the UV protection level. Toy sunglasses may not have any UV protection, so be sure to look for the UV protection label.
Large, wraparound-style frames may provide more efficient UV protection because they cover the entire eye-socket. This is especially important when doing activities around or on water because much of the UV comes from light reflected off the water’s surface.
Sunglasses are the most effective when worn with a wide-brimmed hat and sunscreen.
- Use extra caution near water, snow, and sand because they reflect damaging UV rays and increase your chance of sunburn and other damage to the skin and eyes.
Comment: How test sunglasses for UV protection
Many opticians are using UV Meters to test if lenses absorb all the UVA and UVB.
Warning: However many of these UV Meters have been made and sold to the optical retail industry, and indicate full UV 100% absorption at 382 nm which is only 50% of the UVA range. They give a faulty reading.
Examples of Broad-Spectrum Ingredients
Ingredients Other Names Benzophenones Oxybenzone Cinnamates Octinoxate
CinoxateEcamsule Mexoryl SX Sulisobenzone Salicylates Titanium Dioxide Zinc Oxide Avobenzone Parsol 1789
http://www.fda.gov/Radiation-Emittin...116445.htm#top
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