So I decided to make a blind critter and I found some odd results while on another critter in the same space:

At first I was just assuming the players were just leaving and going without a word, until I logged into another critter.

I noticed that blind critters can't hear outside of their 1 square tile of vision. You can still see ooc chatter and actions, but you can't hear anything.

Steps of reproduction:

-Log into a character who is blind (idk if it's  the same with poor vision haven't it yet) Apparently its the same with poor vision

-Have someone talk IC out of your vision

-Proceed to not hear it.