I have a soon to be 3, Shih Tzu, named Riley. He is an awesome little doggie and I love him to death...ok, I went a little overboard with that last statement but he is my snuggle buddy.
Shih Tzu's are known to have some eye issues. I thought Riley's eyes were fine since the vet never said anything. Their eye lashes have a tendancy to grow inward causing scratching of the cornea.
I was on vacation in WDW and my MIL was watching the kids and Riley and called me the morning I was coming home and said she believes Riley has a cold in his eye. I told her to keep an eye on him and clean it if she could. He was not eating and hiding, which he never does.
I got home and instantly freaked. It did not look like a cold so I went to the Ani-merge...yup, his cornea was ruptured and they had me drive to another vet, where he could be seen in the AM but the Opthamologist. The 2 vets I saw at night, said he would lose his eye!

I was devastated thinking if I was home, I would have known something was wrong.
Well, the Opthamologist called me the next morning and said that the eye had stopped draining and may be able to be saved. So, I took him home with some strong meds and his E-collar...His eye was able to be saved but he has scarring on that eye and is partially blind.
After the eye healed, I had his eye lashed removed and he is back to normal. Aside from the white scar on his eye, you would really never know he is partially blind.
So, just a word of caution, make sure you have his eyes checked thoroughly...
Another thing, he is not great at letting me know when he needs to go out...so if he is not on his regular schedule, he has accidents once in a blue moon.
Here's my little man: