Krachmer J H
Arch Ophthalmol. 1978 Jul;96(7):1217-21. doi: 10.1001/archopht.1978.03910060051009.
Pellucid marginal degeneration of the cornea is a bilateral, clear, inferior, peripheral corneal-thinning disorder. Protrusion of the cornea occurs above a band of thinning, which is located 1 to 2 mm from the limbus and measures 1 to 2 mm in width. American ophthalmologists are generally not familiar with the condition because most of the literature concerning pellucid degeneration is European. Four cases are described. This condition is differentiated from other noninflammatory cornel-thinning disorders such as keratoconus, keratoglobus, keratotorus, and posterior keratoconus. It is also differentiated from peripheral corneal disorders associated with inflammation such as Terrien's peripheral corneal degeneration, Mooren's ulcers, and ulcers from connective tissue disease.
角膜透明边缘变性是一种双侧性、透明的、下方周边角膜变薄病症。角膜膨出发生在一条变薄带上方，该变薄带位于距角膜缘1至2毫米处，宽度为1至2毫米。美国眼科医生通常不熟悉这种病症，因为大多数关于透明变性的文献来自欧洲。本文描述了4例病例。这种病症与其他非炎性角膜变薄病症相鉴别，如圆锥角膜、球形角膜、角膜隆凸和后圆锥角膜。它也与伴有炎症的周边角膜病症相鉴别，如泰里恩周边角膜变性、莫伦溃疡以及结缔组织病引起的溃疡。
