USA TODAYFlushing your contact lenses down the drain is adding plastic waste to oceansUSA TODAYUp to 20 percent of wearers aren't tossing their old lenses into waste containers, opting instead for disposal in sinks and toilets. An ASU study found that after going through a sewage treatment plant, they became even small pieces, which can find ...Why Are So Many People Flushing Their Contacts Down the Toilet?The Atlanticall 23 news articles »