Crystal Gayle sings about lasers

YouTube link. 

There have been a flurry of posts and articles about a new development in laser therapy; apparently the process can be used to delete or diminish brown pigment in the human iris, resulting in a blue eye.  I'm not going to dig into the science here, but it did remind me of this song by Loretta Lynn's younger sister. 

It's hard to believe the song is over 30 years old now.