chicks dieing, guessing coccsidosis, but now one has runny eyes??

[kimmybee]

Really new at this. Yesterday and today two 10 day old chicks have died. I have four left of this flock. changed the bedding cleaned water and added apple cider vinegar, tomorrow getting Corid or something like that. But tonight when I was washing my feathered feet bantam of poo that could be bad, I noticed one of my silkies eyes was shut and then in comparison to the other silkie her eyes seem to have a discharge coming from them, she also almost looked as if she was doing the little gasping thing the other two did before they died. I didn't notice their eyes being "juicy" I cleaned it off and it opened, but still concerned about the discharge. any guesses and does this seem like the same thing that could be killing my chicks?