Yucky eye and sneeze still not better pic attached

[Lochloosachicks]

My chick that's about 6 weeks old still has an irritated looking eye. She and her 6 other coop mates have been treated for the past 10 days with SMZ for a mild respiratory illness by a vet(she didn't diagnose which one) that they were brought home with a few weeks ago. Her eye hasn't gotten worse, but doesn't really look better either. I've been spraying it with Vetericyn daily. All runny noses seem to have cleared up, but I still hear an occasional sneeze.
They are done with anti-biotics. Should I continue them? Is it possible that this just might be what her eye looks like? And that chickens sneeze sometimes. They are not free ranging at all right now bc I don't want them infecting the others. I always feel that improves their health a lot, getting the fresh air. I might be paranoid, the eye may not have been noticed but I was looking for it bc I have a lot of other birds at risk.

I took a pic of each eye for comparison.

Thanks for your help!

 

[Poultrybreeder]

If you are still hearing sneezing, there is a chance the infections could come back, I would still keep them on some kind of medicine to help with that

 

[Lochloosachicks]

Okay, I started dosing her by mouth because I didn't have enough antibiotics left to continue putting it in the water for all 7. Now another is sneezing. Is it possible for them to just have allergies? How sick do they look with the respiratory illnesses? They are shedding intestinal lining i their poop. Why is that? What does it mean, I don't believe I have ever seen it before.
They don't look sick at all, just the occasional sneeze. And before it was clear runny nose, but not always. It never worsened in 2 weeks without being treated.
I'm treating for the worst, but at some point I'm going to have to decide whether or not to add them to my flock. I'm just wondering is it possible things will be okay?

 

[Poultrybreeder]

They could be okay, I have never heard of a chicken having allergies, but here is a link about shedding intestinal lining https://r.search.yahoo.com/_ylt=Awr...l-lining/RK=1/RS=KQLsjwUfvSFpKLWwhmvgGQocjDg-

 

[Lochloosachicks]

I read that and my chickens aren't displaying any sick behavior but that have been occasionally pooping like this since I brought them home. They are no where near egg laying age. I'm attaching pics of poop in case I'm wrong. It doesn't dry black or brown so I know it's not blood. If it was cocci would that be related to sneezing at all? I have CORID but I'm not sure if it's the right kind or of dosage in water.