Here's another example (not my dog, but a picture I LOVE!):
See how the top third of the ears have been "tipped" (shaved)? the other hair on the ears is left long, so it can hang down. Also the hair on the bridge of the nose is left long so it can either go up into the topknot or hang straight down the muzzle.
I totally understand every one of your's pain that had a groomer that cut the nose bridge/eye corner hairs. Bella had hers cut at her very first grooming, and there was LOTS and LOTS of tears (hers) for quite awhile while those hairs were growing out.....I felt so sorry for her....hair sticking in the eyes is NOT fun!

But, she's just about to the point its not such an issue anymore, thank goodness. So good luck everyone!! Threaten your groomer if you have to

, but dont let them touch those hairs!! Some groomers will even get more over-zealous than just trimming them, btw....I have seen some poor little Yorkies with nearly shaved muzzels

.....makes them look like they have Chi face or something....just not right for a Yorkie, IMO!