My 13 yr old cat, Salem, has had eye issues for a while now. Vets can't seem to diagnose what it is without suggesting expensive tests that I can't afford. I was reading up about LLysine and may try that. The last vet gave us ointment & eye drops that did nothing. I'm thinking it may be herpes? I have another cat & he's completely healthy. Salem is healthy, eats well, poops, sleeps, is very active but just his eye is drippy and looks like a film over it. I attached a pic. I'm hoping for some advice on the LLysine and what you guys think it could be. Thanks.