CNN CNN Newsroom June 22, 2013 16:33:00
We don't know exactly what he hears, if he hears everything we hear, some of what we hear. >> reporter: doctors are confident grayson will eventually hear and speak like any other child. his parents say he's already made great progress, although they won't soon forget what that first moment was like. >> hi grayson. talk to him, daddy. >> daddy loves you. daddy loves you. >> yes, hear. >> i can't stop watching that video. so fun to see his expression as he hears his dad's voice for the first time. let me show you something quickly. first of all, we're not talking specific lish about a cochlear ...