What Causes Glaucoma In Shih Tzu?
What Causes Glaucoma In Shih Tzu? Secondary glaucoma results in increased intra-ocular pressure due to disease or injury to the eye. This is the most common cause of glaucoma in dogs. Causes include: Uveitis (inflammation of the interior of the eye) or severe intra-ocular infections, resulting in debris and scar tissue blocking the drainage angle.