[Terrien's marginal corneal degeneration].

Terrien's marginal corneal degeneration is an uncommon disease from the group of peripheral corneal degenerations. Although this corneal degeneration, as a special entity in ophtalmological practice, has been known for more than 90 years, its clinical essence, and especially aetiopathogenesis and methods of surgical treatment, still intrigue ophthalmologists and ophthalmic surgeons. The uncommon and interesting corneal degeneration is studied in great detail according to referential literature and experience of the author in the light of the latest discoveries and achievements. Special attention was paid to the facts suggesting immunological nature of the disease and soma new information related to clinical course and evolution of the disease. All procedures and methods of conservative and surgical treatment of this type of corneal degeneration are described in the paper.