A couple of nice Eye Tattoos images I identified:

John Mayer – Mayercraft Carrier 1 – _DSC9374
Eye Tattoos

Image by Flickred!
John Mayer, Carnival Victory, Concert 2

John Mayer Shares a Guitar_DSC9328
Eye Tattoos

Image by Flickred!
John Mayer – Carnival Victory, Lido Deck show.