FYI if you use contacts (from https://www.allaboutvision.com/contacts/acanthamoeba-keratitis.htm with some extra tidbits from other websites i found while getting informed about this)
Never use tap water with your contact lenses. The FDA has recommended that contact lenses should not be exposed to water of any kind.
Do not swim, shower or use a hot tub while wearing contacts. If you do decide to wear your lenses while swimming, wear airtight swim goggles over them.
Soak your lenses in fresh disinfecting solution every night. Don’t use a wetting solution or saline solution that isn’t intended for disinfection.
Always wash your hands before handling your lenses.
Always clean your contacts immediately upon removal (unless you are wearing disposable contact lenses that are replaced daily). To clean your lenses, rub the lenses under a stream of multipurpose solution – even if using a “no-rub” solution – and store them in a clean case filled with fresh (not “topped off”) multipurpose or disinfecting solution.
Wash your case with solution and not tap water.
Replace your case at least once every 3 months with a new one.
And if you do get a red eye with a burning sensation and blurry vision that does not go away and you use contacts, do remind your doctor that you're specifically worried about acanthamoeba and would like to make sure that you're not at risk, as this woman visited several ophthalmologists every 2 days and not one of them thought about it. The treatment was eye drops. Now she is blind and needs a transplant.