Why You Shouldn’t Flush Contact Lenses Down the Toilet 為什麼你不該把隱形眼鏡丟進馬桶沖掉


精英翻譯社轉自: http://iservice.ltn.com.tw/Service/english/english.php?engno=1230894&day=2018-09-10




Contact lenses don’t last forever, so what do you do with yours when it’s time to discard them? Scientists are hoping your answer isn’t, flush them down the toilet or toss them into the sink.



That’s because a new study finds that discarding contacts lenses in these ways may ultimately end up contributing to microplastic pollution in waterways. Microplastics measure under 0.2 inches 5 millimeters in length — about the size of a sesame seed or smaller — and can wind up in the ocean and Great Lakes, posing a potential threat to aquatic life, according to the National Oceanic and Atmospheric Administration.



But what happens to these lenses when they’re swept down the drain? They end up in wastewater treatment plants. Wastewater is also mixed with a variety of bacteria, which are tasked with breaking down biological waste. This, ultimately, is what could lead to the formation of microplastics, the researchers said.



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