Help! Chicken with closed eye, what do I do?

[Sunny-Side Up]

My Barred Rock is doing fine. However... my Easter Egger seems to have it, and it's worse. I'm not sure if it's the same thing though.
I noticed her eye closed so I gave her the same sterile eye drops as with my other chicken. But she seems to be acting weird. The Barred Rock acted the same as usual when she had it, but my Easter Egger is just sitting in the shade and not going with the other chickens (not yet lethargic). I'm getting worried that she'll start acting lethargic.
In case it's an infection that could spread, I cleaned my coop and sprayed it with Poultry Protector. I'm also going to make that solution that WyorpRock mentioned once I'm done typing this. If she's doing worse later on, I'll try to do something more, like maybe separate her from the others and let her rest.
I really don't know what this is! The only things that I can think of are that windy day and my neighbors moved their chicks outside a week or two ago. I just hope no other chickens will get it...
Should I do anything different?

 

[Wyorp Rock]

It sounds like you are doing what you can. I would monitor her closely for any other symptoms, bubbles in the eyes, lethargy, coughing, wheezing, etc.

The neighbors chickens-do you go there often, look at/cuddle them, then return to your own flock?

 

[Sunny-Side Up]

Okay. I don't go over to their chickens at all, but they are really close to mine, like 30-40 feet away... (I promise, my chickens were there first!) But we haven't had any problems yet, and their chickens are younger than mine.

 

[Wyorp Rock]

Okay. I don't go over to their chickens at all, but they are really close to mine, like 30-40 feet away... (I promise, my chickens were there first!) But we haven't had any problems yet, and their chickens are younger than mine.

How is your EE? Any better or the same?

 

[Sunny-Side Up]

She was the same earlier today. When I checked tonight, her eye was open but I'm not sure if that was because I'd woken her up. I'll check tomorrow.
Thanks for all your help!