Lens Opacities Classification System
L. T. Chylack Jr, M. C. Leske, R. Sperduto, P. Khu and D. McCarthy
Brigham and Women's Hospital, Boston, MA.
The Lens Opacities Classification System (LOCS) is a simple system for
classifying age-related human lens opacities at the slit lamp or in
retroilluminated and slit-lamp photographs. The system employs a set of
standard Neitz CTR retroilluminated black-and-white photographs for
classification of cortical and posterior subcapsular cataracts and a single
color slit-lamp photograph for classification of nuclear color and
opalescence. We present a detailed description of the system.
