In fact, after taking a cataract surgery, you should spend a long time recovering. In the time of recovery, you should take measures to protect your eyes from any injury. So when it comes to how to shower, the first thing you must bear in mind is that get away hot water, warm water is just okay. And closing your eyes when you wash your face, don't let any shampoo get into your eyes, or you may catch eye infection. If there are some water that get into your eyes, using a dry towel clean them up slowly and softly. If it still doesn't work ,call a doctor for help at once.