Classification of human senile cataractous change by the American Cooperative Cataract Research Group. I. Instrumentation and Technique. Invest Ophthalmol Vis Sci 24:424,

In 1978,' a system of cataract photography and classification was described that provided lens scientists with an opportunity to examine and photograph the lens immediately after extraction and to document objectively, in artifact-free photos, the cataractous change independently of nuclear color. These photographs provided a record of the complexity and variability of cataract anatomy. The system of cataract classification has evolved over the years to its present form