Zeeva has binocular melanosis. It it typically called Carin eye and is only found in Carin terriers. Well except for Zeeva. She is being studied by CSU Fort Collins. In essence the drainage angle in the eyeball becomes blocked by the melanin in the eye(the dark color you see). The pressure builds and the eyes have to be removed when the pressure can no longer be controlled. Zeeva will have her left eye removed Tuesday. Her right will be removed when the pressure is too great.