How to Ruin a Fun Day in the Water in One Easy Step
It's the summer and one of the most common questions eye doctors are asked is, “Is it safe to swim in my contact lenses?”
The answer we give is “NO!"
Do millions of people swim with their contact lenses? The answer is “Yes, they do, but it is NOT a recommended activity.’’ There are several reasons why, ranging from comfort issues to others that are far more sinister and potentially blinding.
The first reason not to swim with contacts in is that the pH and buffering of your tears is not the same as plain water, and certainly not that of ocean or pool water.
Contact lenses, especially soft ones, are designed to do best in pH and buffers of solutions that mimic your natural tear film. This pH difference is often why after you swim in a chlorinated pool your eyes tend to redden, burn or blur.
When pool water or another water source mixes with your tears, the pH rapidly changes and there is a mini-chemical reaction occurring on the surface of your eye. […]