Whole Eye Biometry System

 描述（由申请人提供）：Physical Sciences Inc. (PSI)提出了一种新的双共轭，双波段的方法，全眼光学生物测定。我们将采用一个高速SDOCT为基础的扫描/成像系统设计，最近开发的角膜/巩膜地形图，应用于整个眼睛。该系统基于椭圆形光学扫描/成像设计，该设计在眼睛表面的大片区域上产生近法向入射扫描，用于有效的轮廓和角膜/巩膜表面缝合。本文所述的所提出的创新扩展了该方法，允许通过以下积分相对于扫描枢轴点（系统瞳孔）对成对的眼表面同时成像： 双共轭光学协调的双参考臂使得能够在单个SDOCT光谱仪上在相对于扫描枢轴的精确已知位置处对这两个焦面以及彼此进行测距，而不会对轴向成像范围施加极端要求。通过反射扫描光学器件对眼睛进行直接成像允许操作者精确地定位系统瞳孔/枢轴位置，而眼睛的位置和取向由相机监测并由固定显示器控制。眼睛的折射模型将用于完成物理内表面形状估计。我们将与波士顿儿童医院的合作者一起测试和验证整个眼部生物测量设备，以定量表征某些类别的眼部疾病。

 DESCRIPTION (provided by applicant): Physical Sciences Inc. (PSI) proposes to demonstrate a new dual-conjugate, dual-band approach to whole eye optical biometry. We will adapt a high-speed SDOCT-based scanning/imaging system design, recently developed for corneal/scleral topography, for application to the whole eye. That system was based upon an ellipsoidal optical scanning/imaging design that produces near-normal incidence scans over large patches of the eye's surface for efficient profiling and corneal/scleral surface stitching. Te proposed innovation described herein extends this method, permitting simultaneous imaging of pairs of ocular surfaces with respect to the scan pivot point (the system pupil), by integration of dual-conjugate optics. Coordinated dual- reference arms enable ranging to these two focal surfaces at precisely known locations with respect to the scan pivot, and to each other, on a single SDOCT spectrometer without imposing extreme requirements on the axial imaging range. Direct imaging of the eye through the reflective scan optics allows the system pupil/pivot location to be precisely positioned by the operator, while the eye's position and orientation are monitored by a camera and controlled by a fixation display. Refractive models of the eye will be used to complete physical interior surface shape estimation. Together with our collaborators at Children's Hospital Boston, we will test and validate the whole eye biometry device for quantitative characterization of certain classes of eye conditions.