Everyone remembers the part in Mythbusters where they proved this is possible. Nobody remembers the part where they found no evidence of it ever happening.
Also, the eye patch trope was originally for sailors in general. Which would make sense if this is what it was used for, since all sailors would need night vision, but that just means it’s even crazier that nobody would bother to write it down.
They used deck prisms to see below decks. That would give you plenty of light during the day, and during the night your eyes are already adjusted to the dark.
If that second opponent was a pirate and uses the eye patch for what it was meant for, it would not make any difference.
Everyone remembers the part in Mythbusters where they proved this is possible. Nobody remembers the part where they found no evidence of it ever happening.
Also, the eye patch trope was originally for sailors in general. Which would make sense if this is what it was used for, since all sailors would need night vision, but that just means it’s even crazier that nobody would bother to write it down.
They used deck prisms to see below decks. That would give you plenty of light during the day, and during the night your eyes are already adjusted to the dark.
If the room was bright… yes, it would! Even if only momentarily.
‘I have you now Blackbeard, I’ve ruined your night vision! YOUR NIGHT VISION!!!’
You fool, you gave him darkvision