Michael Rigby-Jones wrote:

> A lot of people just can't see these pictures.  They are called SIRDs
> (something like Single Image Random Dot stereogram).  Usualy the best
> way to visualise them is to force your eyes to focus on a plane behind
> the picture, so effectively you are looking through the picture, not
> at it.  After a while you should see an image start to form, however
> if you move your eyes too quickly it will dissapear.

  They would appear to be a variant of the "star-E-O-grams"; your
viewing instructions are the same.
--
  Cheers,
        Paul B.