comment: >
  
  This is an actual torture method. It is one of my fears too.
  Reports nastily say that subjects experience delirium and hallucinations.
context: This is a friendly reminder to read our rules.
  Remember, /r/Showerthoughts is for showerthoughts, not "thoughts had in the shower!"
  (For an explanation of what a "showerthought" is, please read this page.)
  Rule-breaking posts may result in bans. >
  
  Eyes just collect the visual data, the brain turns it into an image. Have you ever been watching TV but so immersed in thinking about something else that you can't even then recall what you've been watching the last few mins despite looking at the screen the entire time >
  
  You described my entire school period >
  
  Yeah and mine lol 
  This shower thought also made me think of hysterical blindness which sort of serves as an example. During ww2 some soldiers became so traumatized they would temporarily become blind, almost as if the brain just decided to stop processing the images (it just decided fuck this lol) >
  
  Wow seems horrible >
  
  What about when people go to sleep with their eyes open? They don’t seem to actually see and react to anything >
  
  Good point, but I mean people sleep walk and use their eyes while asleep. >
  
  So the brain turns the eyes on then and utilizes them, so then the brain turns the eyes off during sleep regardless if open or closed eyelids ? >
  
  I wouldn’t say eyes “turn off” but more accurate have a “sleep mode” where there are less nerves firing from input. Our brain still uses our visual part of our brain when we sleep and dream, so maybe sleep walkers use just enough stimulus from our eyes to do certain things rather than being completely aware of surroundings. >
  
  I had Lasik done about 6 years ago. One of the weirdest part was after my cornea was sliced a flipped over. 
  When the laser hit, the best way I can describe it was a complete loss of visual information. I distinctly remember just "seeing" grey. >
  
  Scary but cool >
  
  Fun fact. The brain actively shuts down parts of the visual system during blinking and sleep. While your eyes keep seeing, your brain turns off the thing behind them selectively. It's kind of (as in not at all) like turning off the back light on your screen. It can still change the pixel colours, but to see them you need that light behind. >
  
  One of my nightmares is having my eyelids cut off. The thought of not being able to stop seeing and cover my eyes freaks me out.