Ernestine, sorry - no idea what could be the cause of your dog's distress.
But there are always questions you can ask any vet:
- what do you think you would find by operating?
- what are the potential causes of the problems?
- can any of the potential causes be confirmed or excluded without surgery?
- would reason XXX cause the cloudy eyes? etc.
- what are the alternatives?
(A former Saskatchewanian myself...)