WHATS GOING ON

video Attached at end)Got a Tiny pup last night and her eyes are shifty like Nystagmus,Her head wobbles some ,she is very calm ,but ate really good before bed and drank water really good.She is VERY smart litter trained at 8 weeks!
anyone ever had our has a pup with shifty eyes like this is this Nystagmus.Is it something else worse?Is this something that is always going to be and she cant just grow out of it ?I have been around 8 week old pups never had one with shifty eyes??If i keep her I will defiantly be taking her to the vet.
I got a Yorkie pup girl last night 1 pound Tiny ckc 8 weeks old ,But i meet the breeder at 8 pm last night was cold,dark even tho was near a light and she was so adorable I did a quick look over and had to have her $950$$ and was on my way home!!As soon as we got home(Held her whole way home she Never whimpered our made a peep slept happly in a baby blankie i brought in case I brought her home and heat was on blast in the truck and checked her every 10-15 minutes to make sure she was not over hot which she never got) around 9 pm I noticed her eyes Are shifty which is worrying me to death wondering if she could have Nystagmus !!!!!
I gave the tiny pup the night last nigh to make sure that maybe she just wasn't sleepy and that's why her eyes were moving our maybe stressed out due to the bath the breeder gave her ,separation from her other siblings,her car ride to me and then now home? Stress related?
Now I'm contemplating what to say to this breeder when calling the breeder soon and finding out what is going on here!She breeds s**tzu and yorkie CKC so maybe she had so many pups she didn't even notice this maybe Or did she sell me a sick pup for 950$$ Eventho she has the shifty eyes small head shaking she is very smart eats great and drinks great is responsive to sound and when I'm next to her so she can clearly see which Nystagmus I was told only allows them to see shadows ,but she can see for sure her litter box my hands my face when i move around when she chases my hand to play and play with her toys.
Video although she is trying to fall a sleep in this video her eyes do this allot especially when focusing on me.
Shifty Eyes Video by Kittah_Kat | Photobucket http://i235.photobucket.com/albums/e.../pupseyes1.jpg http://i235.photobucket.com/albums/e.../pupseyes2.jpg