Pellucid marginal degeneration

Pellucid Marginal Degeneration (pronunciation: pe-lu-cid mar-gi-nal de-gen-er-a-tion) is a rare, non-inflammatory eye disease that causes thinning and degeneration of the cornea, the clear front surface of the eye. This condition typically affects both eyes and is characterized by a band of thinning that starts from the inferior peripheral cornea and extends to the central cornea.

Etymology

The term "Pellucid" is derived from the Latin word "pellucidus", meaning "transparent" or "clear". "Marginal" refers to the edge or border of an area, in this case, the cornea. "Degeneration" comes from the Latin word "degenerare", meaning to "deteriorate" or "decline".

Symptoms

The symptoms of Pellucid Marginal Degeneration include astigmatism, decreased visual acuity, and in severe cases, corneal ectasia. Patients may also experience photophobia, or sensitivity to light.

Diagnosis

Diagnosis of Pellucid Marginal Degeneration is typically made through a comprehensive eye examination, including corneal topography and optical coherence tomography (OCT). These tests can help to identify the characteristic thinning and protrusion of the cornea.

Treatment

Treatment options for Pellucid Marginal Degeneration include glasses, contact lenses, and in severe cases, corneal transplant. Other treatments such as corneal cross-linking and intracorneal ring segments may also be considered.

Related Terms

External links

Medical encyclopedia article on Pellucid marginal degeneration
Wikipedia's article - Pellucid marginal degeneration

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