Eye Irritation

Been in this section far more then id like this year...



So i went in to feed my chins this evening and i noticed the skin surrounding chicos right eye was discolored. It actually took me a minute to notice that his fur there seems a little wet at one point.





Right eye ^





Left eye^



Im guessing he had some kind of irritation today. Im just wondering for specific things to watch out for in case it gets worse.