---
title: Do your lenses block UV-A, UV-B, and UV-C rays?
description: Our lenses block 100% UV-A, UV-B rays. Our lenses do not block UV-C rays. UVC radiation is the highest energy portion of the UV radiation spectrum. UVC radiation from the sun does not reach the earth
---
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# Do your lenses block UV-A, UV-B, and UV-C rays?
Our lenses block 100% UV-A, UV-B rays. Our lenses do not block UV-C rays.
UVC radiation is the highest energy portion of the UV radiation spectrum. UVC radiation from the sun does not reach the earth's surface because it is blocked by the ozone layer in the atmosphere. Thus, the only way that humans can be exposed to UVC radiation is from an artificial source like a tanning bed, or UV sterilization machine.
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