It’s more normal than one might think for a baby to sleep with open eyes. It doesn’t necessarily mean something is wrong. Babies spend more time in REM sleep than adults. REM sleep is when the brain is more active during sleep, and it may lead to the baby sleeping with open eyes. If you see your baby asleep with eyes open, gently close their eyelids. In some cases, nocturnal lagophthalmos is genetic. If you’re concerned your baby sleeps open-eyed too often, consult your physician.