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Sustainability News

ASU Wrigley Institute News

November 15, 2018

contact lens being applied to eyeMicroplastics are a growing area of concern for researchers and the public, with much of the focus on plastics in our oceans. Until recently, the environmental impact of the plastic we put in our eyes has been largely overlooked. Now manufacturers and researchers are teaming up to raise awareness that disposing lenses down the toilet or the drain adds to the planet’s plastic pollution — and that recycling or disposing lenses with recyclable solid waste are eco-friendly options.

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, plastic lenses are tossed away by consumers in various ways, perhaps without much thought to their ultimate environmental fate. Consumers in the United States use more than 3 billion contact lenses a year. While contact lenses are recyclable, their small size causes them to be filtered out at recycling facilities and directed to the waste stream.

Today, on America Recycles Day, Bausch + Lomb — the third-largest manufacturer of contact lenses in the U.S. — announced that its exclusive ONE by ONE Recycling Program has collected and recycled a combined total of more than 5 million used contact lenses, blister packs and top foils since the programs began late in 2016. The company collaborates with TerraCycle, a leader in collecting and repurposing hard-to-recycle post-consumer waste.

In its announcement, Bausch + Lomb cited findings from researchers at the Biodesign Center for Environmental Health Engineering at Arizona State University that indicate contact lens wearers may be unknowingly contributing to plastic pollution.

“Up until two years ago, there wasn’t a program that allowed contact lens wearers to properly dispose of or recycle their contact lens materials without ensuring that they did not end up in the environment,” said Amy Butler, vice president, Global Environment, Health, Safety + Sustainability, Bausch Health.

The ASU study results were reported by Rolf Halden, sustainability scientist in the Julie Ann Wrigley Global Institute of Sustainability and director of the ASU center, and research partner, Charles Rolsky, at this year’s American Chemical Society conference in Boston, Mass. Along with Varun Kelkar, a graduate research assistant, the team examined 13 contact lens brands, made of nine different types of plastic polymers, concluding that lenses that are washed down the drain typically flow into wastewater treatment plants. At the wastewater plants, the lenses are broken down into microplastics, which accumulate in sewage sludge. For about every two pounds of wastewater sludge, a pair of contact lenses typically can be found.

Read the full story on ASU Now.

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