I keep a bag of shiny marbles handy for when I first get baby chicks. Scattered around on the brooder floor, they are an excellent distraction from tiny, shiny eye.
Also, if you have shiny silver duct tape you can snip off tiny squares and stick them around on the brooder walls. I guarantee chicks will spend far more time pecking at these items than each other's eyes.
There's an axiom to keep in mind when you have the problem of a chick or grown chicken being singled out for different appearance or an interesting feature. If you can duplicate the different feature, multiplying it in the brooder or run, it will diffuse the attention from the single to the multiple. It's like the bank robber whose description included a bright red hat hiding in a crowd of people all wearing bright red hats. The police don't know whom to focus on.
