One of two 7-year-old Shih Tzus has tearing and red sclera in both eyes
Channel: Dr David Sing
Date: 12/06/2015

The sibling has normal eye white (sclera) but this 7-year-old has severely congested sclera and tearing in both eyes. A blood test showed normal values. The dog was also limping in the back legs. 

Fluorescein eye stain test showed no corneal ulcers which may cause tearing and ocular pain.

Trauma from the other sibling or nasal fold hairs or a starting infection could cause two red eyes. 

Follow up the 2nd day. The dog was eating and more active.