This past weekend I picked up a laser pointer with the idea of
using it as a toy for my cats. It uses for very small batteries
and is built into a pen. After playing with them for a bit I
noticed that from time to time they would get their heads in the
light beam. What I'm worried about is any possible damage that
might done to their eyes if I happen to get the beam in their
eyes.

I of course avoid getting the beam on them but don't want to take a
chance in damaging their eyes.