眼底OCT成像系统的研制

光学相干层析（OCT）成像技术是一种高分辨率生物成像手段，能非侵入、无接触地对活体内部的结构与生理功能进行检测。在生物医学领域，OCT主要还是应用在眼科学，主要是因为近红外光很容易穿透人体眼睛介质。本文利用中心波长为854nm的宽带弱相干光源SLD实现了光学相干层析成像系统在眼科中的应用。系统采用傅里叶域光学快扫描延迟线实现了快速扫描成像，成像深度为3mm。我们自行设计了一种用于眼底信号探测的眼科探头,包括：眼底OCT成像光路；眼底照明光路；眼底照相光路，获得了眼底黄斑和眼底视神经乳头的眼底照片以及OCT图像。

Development of an Optical Coherence Tomography Imaging System in Ophthalmology

Optical coherence tomography (OCT) is a high resolution biomedical imaging method, allowing for non-invasive and contace-free detecting of internal tissue structure and physiology. Ophthalmology is still the dominating field of biomedical OCT. The most important reason for that is the high transmittance of ocular media. An OCT system with broadband source (SLD) centered at 854 nm wavelength is applied for imaging in ophthalmology. Based on Fourier-domain rapid scanning optical delay line, the system is capable of imaging depth of 3mm. A device detecting the signal of eyeground is provided in this article. This device constitutes of the optical path for OCT imaging in the eyeground, the optical path for lighting of the eyeground, the optical path for obtainning photograph of the eyeground. The OCT images of macular region and optic nerve in the eyeground have been obtained.