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Investigative Ophthalmology & Visual Science, Vol 24, 424-431, Copyright © 1983 by Association for Research in Vision and Ophthalmology

ARTICLES AND REPORTS

Classification of human senile cataractous changes by the American Cooperative Cataract Research Group (CCRG) method. I. Instrumentation and technique

LT Chylack Jr, MR Lee, WH Tung and HM Cheng

The American Cooperative Cataract Research Group (CCRG) has adopted a system of classifying human cataractous changes that is based on separate and independent photographic documentation of opacification and nuclear color. This system has been extremely useful to the laboratory scientist who wishes to know the significance of associations between laboratory data and the extent or type of cataractous change. It has been applied to the analysis of nearly 2500 cataracts since 1976. This study presents the details of the instrumentation and technique of this new system and the results of classifying 2231 intracapsularly-extracted cataracts.


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