Progress toward developing a cataract classification system.
A cataract classification system is being developed based on a set of standard photographs. The system uses an ordinal scale ranging from 0 (no opacities) to 2 (definite opacities) to classify cataractous changes in the nuclear, cortical, and posterior subcapsular lens zones. The reproducibility of slitlamp-derived and photo-derived classifications using the system was evaluated. The reproducibility between 2 observers for slitlamp-derived classifications was very high (n = 60). The reproducibility within and among 4 photography readers was also good for photo-derived classifications (n = 100). Discrepancies were found between ratings derived from slitlamp examinations and from photographs; such discrepancies were most frequent for gradings of cortical opacities.
Leske
M C
MC
State University of New York at Stony Brook.
Chylack
L T
LT
Sperduto
R
R
Pennett
M
M
McCarthy
D
D
D002386:Cataract / Q000145:classification* / Q000175:diagnosis; D006801:Humans; D010781:Photography