I would imagine the process it would take to record a dream would be near impossible (with current technology) I mean it's not your eyes that are seeing the dreams really that's pretty much projection right from the brain..when you are in a dream state you're going through R.E.M. phase of the sleep cycle. Which stands for Rapid Eye Movement.. so literally you're eyes are darting from side to side very quickly so in that moment the eyes are not actually functioning in any way that you might think of logically at least..