The United States Food and Drug Administration recommends contact lenses not be exposed to any form of water. The reason is that certain bacteria present in impure water can become attached to contact lenses, increasing the risk of infection and possible vision loss. However, if lenses are worn in a bathtub or hot tub, it’s essential to avoid getting water splashed in your eyes. Also, tight-fitting goggles can offer a measure of protection when swimming with contact lenses.
Based on research and scientific evidence, the American Optometric Association offers the following advice:
“If lenses are accidentally exposed to water, instill a lubricating drop to help loosen the lens on the eye then remove the lens with clean, dry hands. Next, clean and disinfect the lens before re-inserting, or discard the lens. Never sleep in a lens that has been exposed to water without first cleaning and disinfecting it. If lenses were removed prior to getting in a bathtub or hot tub, they must be properly cleaned and disinfected before being re-inserted.”