Yes, it is only her eyes affected. No itching or licking anywhere else at all. Her coat and skin are fine.
I will start cleaning her eyes more often. And I have also been wanting to get her on a supplement because she is older so will def look into what you suggested for that.
As far as a possible food allergy, is it possible that it can start up randomly with no change to diet? I will look for a better food and commit to feeding her only that for the 3 months and hope for a change.
Next vet visit, I can inquire about the allergy testing. And will continue the drops, attempting to get them in her eyes as much as possible. A lot of them don't make it in, as she moves her head around a lot during that time.