Every year, about 45 million Americans rely on contact lenses to see the world more clearly. This $2.7 billion U.S. market has made contact lenses more comfortable and disposable. Every day, these plastic lenses are tossed away by consumers in various ways, perhaps without much thought to their ultimate environmental fate. ASU scientists are reporting the first nationwide study that shows consumers, by discarding used lenses down the drain, may be unknowingly contributing to plastic pollution.
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