RETINAL IMAGING - SCATTER AND INDIRECT ILLUMINATION

这是一个研究光线直射视网膜的方式的项目。 有助于或阻碍眼睛特征的可视化。一束狭窄的 聚焦在视网膜上的光从眼睛散射回来。 视网膜上的焦点，b)晶状体和玻璃体中的散射体，以及c) 间接被光照亮的视网膜或前部结构 散落在焦点外。扫描激光检眼镜 提供了如此理想的可分析光。一种新技术的实现 水下探测中使用的“双扫描”将允许分离 三种光信号中的一种。在这项研究中，我们将研究它们 个别： 类型a)本身提供了眼底的直接图像，没有面纱 从前散射体和视网膜内散布。 类型b)提供有关前散射体本身的信息-什么 它们是以及它们是如何组织的。 类型c)表示间接照明的眼底图像。这 完整的图片就像是在边缘看到的所有视图的镶嵌 裂隙灯照明面积及检眼镜观察。

This is a project to study the ways in which light directed at the retina aids or hinders the visualization of features in the eye. A narrow beam of light focussed on the retina is scattered back out of the eye from a) its focal spot at the retina, b) scatterers in the lens and vitreous and c) retinal or anterior structures which have been indirectly lit by light scattered out of the focal spot. The Scanning Laser Ophthalmoscope provides such ideally analysable light. Implementation of a technique of 'double scanning' used in underwater exploration will allow the separation of the three types of optical signal. In this study we will look at them individually: Type a) by itself provides a 'direct' image of the fundus, free of veiling from anterior scatterers and scatter within the retina. Type b) provides information on the anterior scatterers themselves - what they are and how they are organized. Type c) represents an indirectly illuminated image of the fundus. This complete picture is like a mosaic of all the views seen at the edges of the illuminated area in slit lamp and ophthalmoscopic observation.