My son got his first hearing aids at 9 weeks of age.
Elijah was born with severe/profound deafness. He can hear at 75 decibels on his right ear and his left ear is profoundly deaf. The blinking was just his initial reaction to the new sounds he heard.
Here's a link to Elijah's story
http://www.childrensmn.org/blog/kidshealth/2015/03/hearing-aids-expand-9-week-old-boys-world/
Contribute to Elijah's Cochlear Implant surgery
http://www.gofundme.com/swv2t2j