眼前节相干光断层扫描技术的临床应用进展

Clinical applications and limitations of anterior segment optical coherence tomography

近年来，相干光断层扫描（OCT）技术在眼前节疾病诊治中的应用飞速发展。由于OCT的分辨率更高、成像效果更好且为无创的非接触测量，所以它在前房参数测量、角膜地形测量及房角测量等方面具有明显的优势。高速、高分辨率的傅立叶OCT技术与传统的时域OCT技术相辅相成，推动和发展OCT在眼科临床中的应用。本文介绍了眼前节OCT的成像原理，结合相应的临床应用展示了OCT在眼前节疾病发病机制研究及诊疗中的价值与局限，并对OCT技术未来的发展进行展望。

Optical coherence tomography （OCT） is being employed more and more often to facilitate the diagnosis and management of the anterior eye segment diseases. The cross-sectional imaging capability of its higher resolution allows OCT to measure and visualize clear anatomic structures, specifically in anterior chamber biometry, corneal pachymetric mapping, and anterior chamber angle. Fourier-domain OCT technique which achieves higher speed and higher resolution and time-domain OCT technique have driven their further application in ophthalmological practice. In this review, we describe the principles and characteristics of OCT, summarize the recent utility and the limitations of anterior segment OCT in the pathologies and surgical planning of anterior chamber, cornea and surrounding areas, and prospect its future development.