The first night when you come back home after receiving surgery can be difficult. But sleeping straight with your face towards the ceiling is the right position. Even if you want to sleep on your side, you might turn on the side of the eye that hasn't received surgery.  The first 24 hours are crucial. After you've come back from the doctor's visit, you'll be asked to use the shield for the next one or two weeks but only during sleeping. It's done, so you don't end up hurting your eyes.