Quail going blind

[Kirk]

Many of my Bobwhites are going blind. It starts out with a swollen ring around each eye which eventually closes the eye all together. I think it may be something caused by mosquito bites but I'm not sure. They walk around and eat and show no other signs of sickness.I have chickens with similar problems and everybody seems to suspect fowl pox. Any idea on what to do or any treatment available? I hate to see these birds suffer.