ChatGPT:
1. People blind since birth
They usually
do not see images in dreams, because the brain never learned how to process visual information.
Instead, their dreams are built from other senses:
- Sound

- Touch

- Smell

- Taste

- Emotions and movement
So their dreams can feel very vivid, but they are
non-visual experiences.
2. People who became blind later in life
If someone had vision earlier and later lost it, they
often still see images in dreams.
This happens because the brain already has stored visual memories.
- Some people keep seeing images in dreams for many years after losing sight.
- Over time, the visual part may gradually reduce.
Why this happens
Dreams are produced by the brain during
REM sleep, where it recombines memories and sensory experiences. The brain uses
whatever sensory information it has available.
So:
- Never seen → dreams use other senses
- Seen before → dreams may still contain images
If you're curious, there’s another interesting fact:
people who are blind tend to have slightly more nightmares than sighted people, possibly because of increased stress from navigating the world without vision.