There have been videos of people hearing for the first time, and those reduce me to tears. However, I haven't come across a video of someone seeing for the first I have.

According to

"Gary Brister had been blind since 1978 due to a chemical explosion at work. But thanks to a state of the art surgery, he's now about to see again with 20/30 vision. This video captures the moment he realizes he can see once again."

Watch this touching moment: