comment: >
  
  Do you mean they lost an eye in a swordfight because they sucked, or they're bad with eye patch because of no depth perception?
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  The reason for the eyepatch wasn't because they were blind in 1 eye,  it was so 1 eye was adjusted to daylight and the other was adjusted to the dark , so when they went below deck, they could uncover the patched eye and they could reasonably see better in the dark >
  
  I do this when I go to the bathroom at night, one eye closed in the lit bathroom and then switch when I go back to the dark bedroom, works like a charm. >
  
  Same here, it’s almost like night vision. >
  
  Unless the actual reason for wearing an eyepatch was to prepare one eye to always see clearly in the dark. If that were the case, they'd be a better fighter than non-eyepatch wearing fighters when fighting below deck. >
  
  Wouldn’t then all pirates on deck wear a patch? How come it’s wasn’t more of a common thing amongst sear faring folks? >
  
  Only a few needed to go between decks during a fight.  Most stayed at their stations for the duration.