Be vigilant about UV protection.

警惕紫外线的保护。

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Billy: Yep. They're prescription contacts with UV protection.

比利：是的。眼镜是处方接触，还能防紫外线。

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Studies have shown that some lightweight fabrics do not provide enough UV protection.

研究表明某些轻质衣服不具备足够的防紫外线功能。

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"All other things being equal, I would want the best UV protection in a lens, " says Jeffrey L. Weaver, executive director of the American Board of Optometry in St.

WSJ: Contacts Lenses That Let In Sun, But Block UV Rays

"Oxybenzone is one of the few FDA-approved ingredients that provides effective broad spectrum protection from UV radiation, and has been approved for use since 1978, " said Dr. Daniel M.

CNN: STORY HIGHLIGHTS

Only a limited number meet Food and Drug Administration standards for "Class 1" protection, in which 90% of UV-A radiation is blocked and 99% of UV-B radiation is blocked.

WSJ: Contacts Lenses That Let In Sun, But Block UV Rays