An estimated survey says about 45 million Americans prefer wearing contact lenses more than eyeglasses as per daily lifestyle schedules; millions of those wearers could be clogging our waterways with their used contacts.

Daily contact lenses are technically made on use & throw policy. Daily contacts are thinner than reusable lenses (these can't be stored after being put off), so you throw them away as soon as you take them out, whether you wore them even for a whole day.