角膜和角膜形态学的测量和分析是眼屈光学研究的重要部分。近10a来,角膜地形图学的研究得到了迅速发展,尤其在屈光手术术前设计、术后疗效评估中起到独特的作用,但其测量的精确性一直是人们关注的问题。本文就Orbscan角膜地形图系统的测量误差及其影响因素做一综述,指导临床更加合理的应用Orbscan角膜地形图系统。 Measurement and analysis of corneal and corneal morphology are an important part of ophthalmic research. Nearly 10 years, the rapid development of corneal topography has been developed, especially in preoperative refractive surgery design, postoperative evaluation of the role played a unique role, but the accuracy of measurement has been a concern. In this paper, the measurement error of Orbscan corneal topography system and its influencing factors are reviewed to guide the clinical application of Orbscan corneal topography system.