If they’ve been blind all their life, they probably wouldn’t have sight in their dreams, but if they haven’t, they still know what light is, so they would have vision in their dream. Do you know anybody who you could ask that is blind?
I have heard instances of blind people that could see in their dreams / dreams normally had vision. I forget exactly how this works; perhaps its based off people’s description of what sight is like.
I’ll dig around and do some research unless somebody posts the answer here.
If someone was born blind, I would assume that their dreams are void of any visual component whatsoever. However, if the blindness occurred later on in the person’s life, I see no reason to believe that they could not still have dreams with vision in them.
It’s an interesting dilemma and one that I would like to learn more about.
I heard somewhere that blind people can still detect light, and can tell if the light is on or off. I think that if they heard a good enough description of what sight was when they knew what light WAS, they might be able to have some form of sight in their dream.
Some blind people can detect light while others cannot. A distant relative of mine was born with a disease that severely impaired her vision. By the time she was a toddler she was blind and could only see light. Now she has completely lost her sight; she can’t make out light/shapes/shadows anymore at all.
I’d ask her what her dreams are like if I could-- but she’s in a different country and speaks a different language. 
i thought of this once and googled it and found out that people who were born blind dream using thier other senses. if they lost their sight later they see and use thier senses. hope this helps
merged into most recent identical topic … I know there are quite a few older topics discussing the same thing (try searching for blind in stuff and gen luc forums) 
This as always been a question that intrigued me. If a person has been blind his entire life and has never been able to visually see anything what do his dreams look like? Are there images or colors? I’ve pondered this question for years and I just figured out this is the perfect place to ask the question. 
What an interesting article lazy_astronomer. Thanks that was exactly the answer I was looking for! I can’t believe I never thought of dreams being modeled after the way a person lives their life through their senses. 
Based on their other senses and their imagination, the blind ones tend to have vivid colored and full of objects dreamworld. However, because they never saw the actual thing, we assume that it is not always compatible with the one from the real world (although usually is). We, the ones who see, we can tell for sure that some kind of object we saw in our dream belongs to a category because we saw many examples/objects from that particular category while the blind ones don’t have something to compare with a specific object from his/her dream.