I have a snake with the same thing going on with his eyes, and it has been that way since I got him but my other snakes don't have this problem. Here is a picture[ he was in shed, but its still that way after and before the shed]...


And also they say you shouldn't house them together, but that is a large tank for BPs so it may work out if you give them enough hides and such to stay away from each other. If they feed alright you should be fine, but if one doesn't eat I'd separate.