Tough cookie, your kitty appears to have a common infection, I believe is called clymedia. Some of my kittens usually have it, and it can cause eye damage if it is left untreated. this is what happened to Cookie, my cat. I keep a little tube of terramycin in my cat's medicine box. Wash out his eye with warm water and a piece of paper towel, and then take a tiny dab of the ointment and rub it into his eyes. It should clear up in a day or so, or repeat the same until it is gone. Yes, I also believe that it can be contageous to other kittens. However if they did not have the infection after birth, then it is unlikely that they will contact it from another kitten. Good luck on treating your kitten's ailment, and if there are any questions about it, please do not take my word as
"gospel" but instead check with your vet.

...............wayne