A similar question was posted on 06th December 2002 here:
question 21560
people who weren't born blind, I'm sure the answer is "yes" they do see their dreams; if someone who needs glasses goes to sleep without them on, would their dream be blurred? But as for people born blind... their dreams would be fascinating because they don't actually know what they're dreaming of looks like (OK so that didn't make sense). Example: they have a dream of an apple... but that's the image they know as an apple that they've built up through touch and smell. In this way, can blind people dream colours? I imagine explaining a colour to someone blind from birth is impossible? (You can't say, for example, that orange is a lighter shade of red, because the won't know what red is...). A user called
Bernado shed some light on this question for me here:
question 41701