Chylack L T, Tung W H
Invest Ophthalmol Vis Sci. 1986 Jan;27(1):118-22.
In 1978 the American Cooperative Cataract Research Group (CCRG) adopted a stereoscopic camera system for photographing human cataracts in vitro based upon a Zeiss OPMI 1 operating microscope (Carl Zeiss, Inc.; Oberkochen, West Germany). Photographs obtained with this system were used to classify human cataractous change according to the standardized CCRG protocol. Classification data correlated with laboratory data furthered the attempt to define the biochemical or biophysical basis for specific types of cataractous change. Presently, the high cost of this camera (exceeding $20,000) precludes its use by many laboratories wishing to do human lens research. This study describes an inexpensive (less than $2,200) alternative camera for this type of photography. Adjacent frames on the film strip constitute stereo pairs which can be viewed in a modified stereo viewer. In the original CCRG camera both members of a stereo pair were included in the same frame. The quality of the stereo images obtained with this new system nearly equals that with the original Zeiss system. It is hoped that this inexpensive system will allow more scientists to participate in CCRG-related research and increase the supply of intracapsularly extracted cataracts available to all collaborating CCRG scientists.
1978年，美国白内障研究协作组（CCRG）采用了一种立体摄像系统，用于在体外拍摄人类白内障，该系统基于蔡司OPMI 1手术显微镜（卡尔·蔡司公司；西德奥伯科亨）。用该系统拍摄的照片被用于根据标准化的CCRG方案对人类白内障变化进行分类。与实验室数据相关的分类数据推动了为特定类型的白内障变化确定生化或生物物理基础的尝试。目前，这种相机成本高昂（超过20,000美元），许多希望进行人类晶状体研究的实验室无法使用。本研究描述了一种用于此类摄影的廉价（不到2,200美元）替代相机。胶片带上相邻的帧构成立体对，可以在改良的立体观察器中观看。在原来的CCRG相机中，立体对的两个成员包含在同一帧中。用这种新系统获得的立体图像质量几乎与原来的蔡司系统相当。希望这种廉价系统能让更多科学家参与与CCRG相关的研究，并增加所有参与协作的CCRG科学家可获得的囊内摘除白内障的供应。
