ISBN: | 978-5-5143-4833-6 |
High Quality Content by WIKIPEDIA articles! Pellucid marginal degeneration (PMD; keratotorus), is a degenerative corneal condition, often confused with keratoconus. It is typically characterized by a clear, bilateral thinning (ectasia) in the inferior and peripheral region of the cornea, although some cases affect only one eye. The cause of the disease remains unclear (idiopathic).