大视野、模块化、稳定的、基于自适应光学的扫描激光检眼镜。
Large-field-of-view, modular, stabilized, adaptive-optics-based scanning laser ophthalmoscope.
作者信息
Burns Stephen A, Tumbar Remy, Elsner Ann E, Ferguson Daniel, Hammer Daniel X
机构信息
School of Optometry, Indiana University, Bloomington 47405, USA.
出版信息
J Opt Soc Am A Opt Image Sci Vis. 2007 May;24(5):1313-26. doi: 10.1364/josaa.24.001313.
We describe the design and performance of an adaptive optics retinal imager that is optimized for use during dynamic correction for eye movements. The system incorporates a retinal tracker and stabilizer, a wide-field line scan scanning laser ophthalmoscope (SLO), and a high-resolution microelectromechanical-systems-based adaptive optics SLO. The detection system incorporates selection and positioning of confocal apertures, allowing measurement of images arising from different portions of the double pass retinal point-spread function (psf). System performance was excellent. The adaptive optics increased the brightness and contrast for small confocal apertures by more than 2x and decreased the brightness of images obtained with displaced apertures, confirming the ability of the adaptive optics system to improve the psf. The retinal image was stabilized to within 18 microm 90% of the time. Stabilization was sufficient for cross-correlation techniques to automatically align the images.
我们描述了一种自适应光学视网膜成像仪的设计与性能，该成像仪针对眼球运动的动态校正进行了优化。该系统集成了视网膜跟踪器和稳定器、宽视野线扫描扫描激光检眼镜（SLO）以及基于高分辨率微机电系统的自适应光学SLO。检测系统包括共焦孔径的选择和定位，允许测量来自双程视网膜点扩散函数（psf）不同部分产生的图像。系统性能出色。自适应光学使小共焦孔径的亮度和对比度提高了两倍多，并降低了使用移位孔径获得的图像的亮度，证实了自适应光学系统改善点扩散函数的能力。视网膜图像在90%的时间内稳定在18微米以内。这种稳定性足以使互相关技术自动对齐图像。
Zotero 插件