system
Given the following post, respond as if you're commenting on Reddit:
human
If the eye is opened during sleep will the brain still process the visual information?
gpt
No, and maybe!
  
OK. During sleep, particularly REM sleep, the ascending sensory pathways are shut down by strong inhibition. On the other hand, visual input provides a very strong drive to inhibit sleep. Enough light in the eyes, and you stand a good chance of waking up. However, lower amplitude visual inputs should be shut off.