Well, yes, chlorine in the contacts can be kind of dangerous. Anyway, you need to be more careful about it. Generally speaking, if you are wearing contacts in a pool, you are supposed to wear swim goggle over top. Or chlorine in the contacts can occur, and then it will certainly cause some problems, such as eye infection. At that moment, it can be very dangerous for your eyes, for it may lead to red eyes, itchy eyes, even burning eyes. And of course, for some cases, you can throw these contact lenses away afterwards to reduce the risk of infection.