I’m only a student in the field so NotADoctor™ but under normal conditions your tear film layer and blinking keep other liquids out of your eyes. When wearing contacts in water or when cleaning them with tapwater, there is a small amount of the fluid that gets trapped against the eye. If that fluid is fresh water contaminated with acanthamoeba, it provides ample opportunity and time for the acanthamoeba to break through the layer and the contact lens prevents it from being blinked away.
The thing that I love the most about my watch is that it wakes me up in the morning just by doing a vibration on my wrist. I can set an alarm for early in the morning and jt wont even wake my partner