My son had eye surgery right before his 3rd birthday, he has nystagmus. His eyes were so red and sore looking for awhile, and he wouldn't open his eyes the first 24 hours. Just a warning, kids wake up from anesthesia scared and crying (wanting mom. Message me if you want to know more.
My son had surgery to move both outer muscles on the outside of his eyes to correct lazy eyes. The pp is correct is how bad they look afterwards and not wanting to opentheir eyes. It was a rough few days. Feel free to PM me if you need some advice or support.