Up until recently, four-month-old Leo wasn't seeing much of the world. It wasn't because he's four months old, but because he suffers from oculocutaneous albinism. "This affects the coloring of his skin, hair, and eyes and leaves him with extremely impaired vision," Leo's dad David explained on YouTube.
Shortly after receiving the diagnosis, though, Leo was outfitted with a pair of glasses. And he was able to see his mom, Erin, for the first time. Stick around for the whole 32 seconds to see Leo's second round of smiles.
OK, there's a lot here. Your first reaction is probably: "Babies in glasses are so cute." Somewhere along the video, you might recognize the similarities between the baby and the old dude from Up. And then, of course, during those well-spent 32 seconds watching this video you should be thinking, "What a cute baby."