[Marginal ectasia of the cornea resolved surgically]

The paper presents the case of a patient with Terrien's marginal degeneration. The moment of the exam, the corneal degeneration was in an advanced stage, being associated with secondary ectasia. The gutter developed as a results of the stromal progressive thinning was already circumferential. The only efficient treatment in this situation is an annular lamellar keratoplasty. We present the mais operatory moments, and also the main intra- and postoperatory incidents and complications. In spite of the fact that this operative procedure was already mentioned in literature, there are no certain proves; so, we are able to consider the achievement of the annular lamellar keratoplasty unique for this moment.