When can I sleep on my side after cataract surgery?

Published national guidance focuses on the shield rather than on which side you lie on. The American Academy of Ophthalmology says a protective eye shield may be worn for several nights while sleeping, and the National Eye Institute says you may need to wear a special eye shield or glasses after surgery. AAO's cataract surgery overview says a shield may be placed over the eye to protect it while you heal, and that your ophthalmologist may ask you to wear eyeglasses or a shield.

The point is to stop you from pressing or rubbing the eye while you are asleep and not in control of your hands or your pillow. NEI lists touching the eye among the things to avoid for a few weeks after surgery. A rigid shield does that job regardless of position, which is why the shield, not the sleeping side, is what the major sources emphasize.

Many surgeons also ask patients to avoid sleeping directly on the operated side for roughly the first week, and to sleep on the back or the other side instead. That specific number is not stated in AAO, NEI, or ASCRS patient materials, so treat it as practice preference and follow the written sheet you were given rather than a general rule from the internet.

Two related rules do have solid backing and matter at night. AAO says not to put your head below your waist for the first 48 hours, which affects how you get into and out of bed, and says to be gentle when sneezing or coughing. If you wake up with real pain, sudden vision loss, or a very red eye, call your surgeon immediately rather than waiting for morning. Your operating surgeon's instructions override this page.