Khaki Campbell duck eye infection

Hi Khakichickens and Welcome!
I'm sorry I have no experience with this so I hope someone else comes along that can help you out here!
Have you tried cleaning off around her eye and if so what did it look like then? Have you looked down her beak?
I am guessing these answers would help others respond further! Best of luck with her!

 

You may want to post on the duck thread as well.
https://www.backyardchickens.com/forums/ducks.42/

I would clean of the area around the eye, and consider using Terramycin eye ointment or plain Neosporin twice a day in the eye. Do they have a bowl or bucket of water they can dunk their faces into, to keep them clean? I am not a duck person, but I think someone else mentioned that those are important to keep the nostrils and eyes clean.

 

I agree with trying to get it cleaned up. If you can get her to a bucket of warm and totally clean water to let her dunk and then maybe a warm water compress on the eye for a minute just to help draw everything out it could be good. It could be as simple as she got something in there that is irritating it and getting her cleaned up good will dislodge it. If she isn't used to being handled you can wrap a towel around her and it will keep her legs and wings tucked safe and hopefully keep you from getting scratched as well! Good luck. If the discharge comes back, moves to the other eye, or is greenish is color there may be an underlying infection that needs medication to clear it up.