Since diabetes mercilessly destroys almost all structures of the eye (cornea, lens, retina, optic nerve), steadily leading to progressive deterioration of vision and blindness, Thioretin A is primarily necessary for this category of patients. Also indicated for: Other dystrophic changes in the retina (glaucomatous, ischemic, hypertensive angiopathy, angiosclerosis and neuropathies). Macular degeneration For the prevention of cataract progression. Hypermetropia, high myopia and astigmatism. Before and after surgery.