"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

The result is a material that is not only waterproof but is able to block out UV radiation from the sun to such an extent that it would rate a Ultraviolet Protection Factor (UPF) of 101.15 if the chart went that high.

FORBES: Chinese Researchers Develop Waterproof Cotton