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To put the amount of UV emitted from fluorescent lighting in context a 1993 study found that UV exposure from sitting under typical office fluorescent lights for eight continuous hours is equivalent to just over one minute of sun exposure (...sorry, you cannot view external links. To see them, please
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Some old people are able to see UVA. Something to do with aging of the lens in the eye.
Aphakia is the absence of the lens of the eye... Aphakic people are reported to be able to see ultraviolet wavelengths that are normally excluded by the lens. This may have had an effect on the colors perceived by artist Claude Monet, who had cataract surgery in 1923.