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Optimmune cleared my dog's eye problem a long time ago. It has flared up recently, I think, because we have been using a dehumidifier in the house (due to recent flooding) and I suspect it has changed the balance in the atmosphere sufficiently to prompt her eyes to be unusually dry. If it is a temporary setback, as I believe, I want to see if something other than Optimmune will work. I have decided to try Lumecare Dry Eye ointment and sterile wipes. These should arrive tomorrow, or Monday, and I'll see how they help.
Thanks to posters' for their interest and contributions.