近红外光引导的微型间接检眼镜在非散瞳超广角眼底摄影中的应用。
Near-infrared light-guided miniaturized indirect ophthalmoscopy for nonmydriatic wide-field fundus photography.
出版信息
Opt Lett. 2018 Jun 1;43(11):2551-2554. doi: 10.1364/OL.43.002551.
Abstract
A portable fundus imager is essential for emerging telemedicine screening and point-of-care examination of eye diseases. However, existing portable fundus cameras have limited field of view (FOV) and frequently require pupillary dilation. We report here a miniaturized indirect ophthalmoscopy-based nonmydriatic fundus camera with a snapshot FOV up to 67° external angle, which corresponds to a 101° eye angle. The wide-field fundus camera consists of a near-infrared light source (LS) for retinal guidance and a white LS for color retinal imaging. By incorporating digital image registration and glare elimination methods, a dual-image acquisition approach was used to achieve reflection artifact-free fundus photography.
摘要
一款便携式眼底成像仪对于新兴的远程医疗筛查和眼部疾病的即时护理检查至关重要。然而，现有的便携式眼底相机视场（FOV）有限，且通常需要瞳孔扩张。我们在此报告了一种基于微型间接检眼镜的非散瞳眼底相机，它具有高达 67°外角的快照式 FOV，相当于 101°的眼睛角度。这款广角眼底相机包括一个近红外光源（LS）用于视网膜引导，以及一个白色 LS 用于彩色视网膜成像。通过整合数字图像配准和眩光消除方法，采用双图像采集方法实现了无反射伪影的眼底摄影。
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