In the contact tower, a new type of filter was used to prevent blocking.

本文选用了一种新型的填料，克服了接触氧化塔易发生堵塞的缺点。

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Lacking so far is direct scientific proof that wearing ultraviolet-blocking contact lenses will prevent long-term eye issues.

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

UV-blocking contact lenses protect the inner structures of the eye including the cornea, the iris, the lens and the retina.

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

UV-blocking contact lenses have been around for more than a decade, but have gained in popularity in recent years.

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