DISCUSSION-EYES
Eyes are intelligent and expressive with eyes and eye rims very dark, 
appearing black. Oval shaped eyes are preferred.  A Terrier's eye looks 
straight ahead which plays a major part in his expression.  The eye fits 
well into the socket, never protruding or sunken.  A large round eye is 
generally found with a too-rounded skull.  Yorkies with red-orange coloring 
on head and muzzle have a tendency toward lighter eyes and eye rims which 
are undesirable as it spoils the necessary keen expression.

A "small beady eye" is highly undesirable and detracts from expression.