The green stain shows the corneal ulcer.
My dog Lilly has suffered from many ailments over her 12 years but one that has always been a concern is her eyes. Lilly has suffered from Dry Eye (Keratoconjunctivitis sicca) since she was three years old, which we have managed with Optimmune eye ointment. This means that Lilly does not produce enough tears to lubricate her eyes properly. Unfortunately there is no cure for Dry Eye, the disease has to be managed with the application of artificial tears, sometimes daily, to maintain eye lubrication and a healthy eye. There is also the possibility of secondary complications due to Dry Eye, even when it is being treated, like corneal ulcers, conjunctivitis, inflammation, pain and even blindness. Unfortunately this is what happened with Lilly.
About 6 months ago Lilly developed a corneal ulcer in her left eye, most likely due to the dry eye, as occasionally overtime the Optimmune can begin to have a reduced effect. I took Lilly to her vet for an examination, where he stained the eye to determine the size or the ulcer, (see image). He prescribed an antibacterial drop as well as continued use of the Optimmune drops, at an increased frequency and pain relief medication to reduce the inflammation and pain in the eye. We re-visited the vet 10 days later for a check up only to find there had been no improvement, so we continued on the same line of treatment for another four days. After those four days were up I took Lilly back to the vet as the eye was definitely still painful. There was still no improvement, so the vet decided to add visco tears (artificial tears) to help lubricate the eye even more. He also started her on Atropine eye ointment to dilate the pupil and protect against secondary glaucoma. We followed this course of treatment for another week but unfortunately it was just not improving so we had to try a more drastic approach.