HELP! my chickens cant open their eyes!

i just got these girls a week ago today. they are 10 huge dominiquers weighing about 12# each. they stay in a corner to themselves and won't any my other birds get close to them.
yesterday when i went out to check on them i noticed 5 of them couldn't open their eyes, they had drainage. someone told me to clean w warm water & put neosporin on their eyes, so i did. today most of them hv opened their eyes except 2 (i could hv missed these 2). but now they sound as if they're coughing! whats wrong? could it b contagious? what else can i do?
they are still laying eggs....can i still eat them?
i dont want the rest of my chickens sick either.

 

here's pics of one that still can't open its eyes and another of one that is coughing