So my Lhasa apso turns 12 this November. I've had him since he was 4 months old. About 2 months ago he started crying and whining for no reason and had a large increase in his appetite. I took him to vets who said he had hip dysphasia in his back legs and arthritis. Since then the crying has gotten worse and the pain relief given didn't appear to make a difference and then 2 weeks ago he seems to be blind. Took him back to vets who diagnosed him with CCD (like doggy dementia) cataracts (although couple weeks before I mentioned his eyes being cloudy but said it was normal as dogs age) but this time put dye in his eyes. Believes he is completely blind in right eye and partial sight in his left eye but has developed an ulcer on the cornea. We are nearly 2 weeks in was back at vets Monday and they have advised to continue with his eye drops but have made some additional drops with his blood plasma in to see if helps (so far no change) advised about concerns for his quality of life as all he currently does is cry sleep eat. Have to carry him outside to go to toilet this week as he is obvs scared now blind but he is doing amazing getting around the house. But she thinks that even if his eye clears up (or it has to be removed) it won't make any difference to his behaviour e.g crying and sleeping and being confused etc. my partner thinks it may be best to let him go to sleep but I can't help but thinking he could make improvements and have some quality of life. I have immense guilt and just don't know what to do for the best. Am I cruel in prolonging things in the hope his eyes gets better and this actually helps his quality of life. Honestly never cried so much in my life. Just love him to bits and want to do what's best for him but also give him the best chance possible. Don't know what I'm asking for but if anyone has experienced anything similar with advice it would be greatly appreciated TIA