Our Cavalier has recently acquired an eye problem. His eyes are bloodshot and weepy, and he keeps them closed a lot of the time. He has become very listless, and we can hardly get him up to go do his business outside. We walk him every day, sometimes he doesn't want to go for a walk. He use to love going on walks.
He is almost 11 years old. I couldn't find this topic on any of the other posts. We don't think he is blind, but his close vision seems a bit off.
We have taken him to the vet. She gave pills, drops and ointment, but it didn't help.
He takes fish oil 1000 mg. and one half tablet of Glyco-Flex (glycosamine) for dogs every day. He has been taking them both for over 8 years. Is it possible either one of these could be harming his eyes? Thank you for any advice, we are desperate.