About six months ago, I adopted two cats from a local shelter who are the light of my life. Unfortunately, one of my cats, "Dr. Lavender", has chronic conjunctivitis. The vet verified that there were no problems with the cornea, then said she probably had feline herpes virus (FHV) and that we'd never be able to get rid of the conjunctivitis completely. Indeed, after treating the cat for several weeks, the symptoms were maybe a little bit better. The vet recommended that I stop the medication (doxycycline, if I recall) for now, but repeat it for 10 days whenever the symptoms were particularly bad. She also said that topical ointments were unlikely to help with this condition.
I'm also giving the cat lysine supplements to help with the FHV. (I'm aware of the meta-analysis that found that lysine isn't helpful for FHV, but after discussing it with my vet we decided to continue the lysine in the hope that it might help, since it doesn't do any harm.)
The only symptoms are an occasional teardrop (about once every two months), and an occasional (about once every 3-4 weeks) tendency to not open the affected eye quite as wide as the other. But I want to do everything I can to make my cats healthy. I've done some research into this on my own, but haven't found anything hopeful. Are there any other treatments that I could discuss with my vet?