I wouldn't think the eye causes her pain. Almost looks like a cataract. Sometimes lighting in photos can make eyes look a little funny, so I was just curiousyes she is blind. it causes her no pain!! i check on them very often, and have never ever noticed them peck at each other.

Well, have you observed them scratching their heads? Do they dust bath?
Since they are picking at one another, I would inspect them really good for lice/mites.