Our Enya has been having one eye or the other bothering her since she and Blaze have been together all the time. I took her to the vet the first time to check for a scratch, but there wasn't one and the day I took her in it was doing much better, so my vet just said to keep on doing what I was doing since it was working. Each week since that first time she has had a problem. My vet figured she probably bumped it, which is very likely the way these 2 play so rough. I make up a saline and eyebright solution and put a few drops in the affected eye a couple of times a day. She hates it, but usually after one day her eye is much better. Her eyes extend out beyond the sockets, so it's easy for them to get bumped when they play. Blazes eyes are set in more and so far he hasn't had any problems. Enya never had any problems with her eyes until we had him. They were always clear with no discharge.