“…Primary and secondary glaucoma are distinguished, in which impaired dynamics of aqueous humor is a consequence of previous diseases (uveitis, lens luxation, cataract, etc.) [1,2,3,4]. Due to the abrasion of the clinical picture, the absence of pathognomonic symptoms in the early stages, and the lack of alertness in this pathology by veterinarians, this disease is often diagnosed late and complicated by buphthalmus, lens luxation, perforation of the cornea, which requires radical surgical treatment in the form of enucleation [5,6,7].…”