Word: uv
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Dates: during 1980-1989
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Regular tinted sunglasses that protect the eye from visible light do not < necessarily screen out harmful rays. To stop UV light, lenses must be treated with a special pigment that absorbs the damaging rays. Eye specialists caution that untreated sunglasses may be worse than no sunglasses at all. Reason: without dark glasses, people squint and blink in the sun, minimizing the amount of UV light reaching...
...easy. Last year manufacturers adopted a voluntary labeling code developed by the nonprofit American National Standards Institute. Some glasses now carry tags saying MEETS ANSI STANDARDS. But critics charge the labels are inadequate. ANSI divides sunglasses into three categories: fashion spectacles that shield eyes from only 70% of UV-B and less than 60% of UV-A; everyday eyewear that screens out 95% of UV-B and between 60% and 92% of UV-A; and special-purpose glasses that absorb almost 99% of ultraviolet rays...
...were 1,781 emergency visits nationwide last year for injuries related to tanning booths. The year before, Teenagers Jennifer Tyree and Aida Sabato suffered excruciating eye pain after visiting a Manhattan tanning parlor. Reason: because they did not wear protective goggles, their corneas were seared by overexposure to the UV sun lamps. Warns their ophthalmologist Barry Chaiken: "Only time will tell if the exposure is going to mean that they'll face a higher risk of cataracts and other long-term consequences...
...ultraviolet rays. The black mark against Bergasol, say other doctors, is that it contains the chemical psoralen, extracted from citrus oil. In animal tests at Harvard Medical School, high doses of psoralen caused skin cancer. Still, says Harvard Dermatologist Madua Pathak, Bergasol also contains sunscreen, which reduces UV absorption and cuts the risk to humans to acceptable levels. Harvard Colleague Robert Stern is not so sure. Says he: "I don't believe that using the agent is safe...
Their interest is hardly academic. The ozone-enriched air, which stretches from six to 30 miles up, protects life on earth from dangerous solar ultraviolet radiation (UV). Although ozone, whose molecules are made of three oxygen atoms, absorbs UV radiation, even the amount that now penetrates the ozone layer can cause skin cancers and has been linked to cataracts. With less ozone, these disorders will increase; with no ozone at all, the UV could be deadly. Scientists have long suspected that decomposing CFCs in the stratosphere release chlorine, which acts as a catalyst, breaking ozone molecules apart...