Ah I totally feel your pain! (I am in the neighborhood, more or less.) buffalobabie has a vet in Oakville (I think it's Oakville) that she really likes. Message her for the details. I think we are going to try him out soon. Although I like my vet (he's a good guy and he's nearby) there are certain things (like record keeping) that I think could be a bit better so I am making a similar transition as well.
For whatever it's worth, I wrote Chance's breeder when our vet diagnosed entropion and I was told that entropion can (though not always) be situational. It can be brought on by allergens in the air (or other irritants) that promote conjunctivitis (red eye, swelling, tearing etc.) and the swelling and movement of the eyelids will lead to them squinting and tearing further. In her experience she says that treating the conjunctivitis often alleviates entropion. Having said that, my breeder recommends a fluorescein stain at a vet opthamologist to check to ensure that there is no corneal ulcer/abrasion present. If there is, then you may want to consider surgery sooner rather than later.
As an aside, we have been using the thick gel drops on Chance's eyes and found they helped far more than the regular tears or rewetting drops.
Breeder recs for a good opthamologist:
Dr. Sue West (in Midland)
Breeder warning NOT to visit:
Dr. Zigler (I believe this is the guy who works out of Sauga/Oakville Emerg.) She said that people have had a lot of questionable experience with him.