Crying while wearing contact lenses is OK, and practically every contact lens user may experience it at some point. If your eyesight becomes hazy or your eyes get swollen, wipe and disinfect your contacts and rest your eyes. Just make careful not to touch your eyes. Wait 15 minutes before putting new contacts in. People usually cry because they are uncomfortable, having trouble seeing, or because they need a break. The only thing that crying with contact lenses on means is that you are doing something very wrong! Always take them off if you feel like you might tear up, which could cause the lenses to become damaged or even fall out entirely. The most common cause of crying with contact lenses on is trying to hard to keep up with a tough job or school requirement- this can result in tearing up the lenses. Other reasons might be using improper hygiene techniques for wearing contacts, such as sleeping in your lenses or not cleaning them regularly. If you wear contacts daily, it's important to follow certain procedures to ensure your vision stays healthy. It is very important to remove your contacts every night so any moisture will evaporate from your eyes. This prevents bacterial growth inside the case where your lenses sleep overnight- this is called "accommodation syndrome". It is recommended to soak your lenses in saline solution for 10 minutes then wash them under running water to remove any residual debris or bacteria.