Glad you got it checked - what I thought was allergies (because she always had allergies to pollens) in our older boxer (Tess, now waiting at the bridge
) turned out to be gluacoma, which permanently blinded her in one eye. Fortunately, meds controlled the pressure in the other eye. It was very itchy, to the point she was grinding her face into anything soft she could find, and looked something like your guy.