I am not a dumbass, surely I will wear laser spectacles and I will only irradiate toenail starting at a few seconds on day 1, longer on day 2, etc, till I can feel slight temperature elevation under nail, progress as needed.
I mean get real guys, laser burn to exposed skin with these wimpy handheld lasers cannot even compare to doctor's office laser, sheesh, gimmee a break, all these Dudley Do-right character types . . . .