Pellucid marginal degeneration (PMD) is a bilateral corneal ectatic disorder, characterized by thinning of the inferior cornea. Numerous surgical procedures have been described in the literature, and there is a lack of consensus regarding the best available surgical management. Recently, full-thickness intrastromal lamellar keratoplasty (ILK) was described as an option for treating PMD and emerged as a promising technique. However, ILK results in an irregular surface, leading to a significant residual against-therule (ATR) astigmatism.

中文翻译：

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角膜透明边缘变性的部分厚度基质内板层角膜移植术。

透明边缘变性（PMD）是一种双侧角膜扩张性疾病，其特征是下角膜变薄。文献中描述了许多外科手术，但对于最佳外科手术治疗缺乏共识。最近，全层基质内板层角膜移植术 (ILK) 被描述为治疗 PMD 的一种选择，并成为一种有前途的技术。然而，ILK 会导致表面不规则，从而导致显着的残余逆光 (ATR) 散光。