Newer Alpine Air Ionizers bear the name "Living Air" and many models have adjustable knobs for controlling the amount of ozone that gets dispersed into the room and a UVC light for the elimination of certain bacteria.
Between the UVA, UVB, and UVC rays we always hear about, it's surprising that many people even care to venture outside, much less soak up the sun, especially sans sunglasses to avoid the "raccoon eyes" effect.
Some brands, like Spy sunglasses, even boast UVC protection, but that's not always necessary, since those rays don't make it through the earth's atmosphere.
They have tapered lenses that are designed to prevent distortion, even peripherally, while protecting your eyes from UVA, UVB, and UVC rays.
Concerns about the depletion of the ozone layer focus on the serious health effects that increased exposure to UVC light would have.