MedlinePlus.gov en Twitter: "RT @NatEyeInstitute: Parents: Have your kids ever asked you what our eyes do when we’re asleep? Show them this video from our Ask a Scientist series! https://t.co/4pZCt72sRJ" / Twitter

MedlinePlus.gov en Twitter: "RT @NatEyeInstitute: Parents: Have your kids ever asked you what our eyes do when we’re asleep? Show them this video from our Ask a Scientist series! https://t.co/4pZCt72sRJ" / Twitter

RT

@NatEyeInstitute

: Parents: Have your kids ever asked you what our eyes do when we’re asleep? Show them this video from our Ask a Scientist series!