Sources of variance in the objective documentation of human cataractous change with Topcon SL-45 and Neitz-CTR retroillumination photography and computerized image analysis.
In the application of Topcon SL-45 Scheimpflug slit and Neitz CTR retroillumination photography to in vivo documentation of cataractous change, several sources of variance affect the results of each technique. We have measured the between-person, between-photographer, between-focal plane (Neitz), between-photo session, replicate photograph (Topcon), between-image analyst and replicate image analysis variances encountered in in vivo documentation of human cataracts with the Topcon SL-45 and Neitz-CTR cameras and our system of computerized image analysis.
Brigham & Women's Hospital, Boston, MA.
L T
LT
Chylack
B
B
Rosner
H M
HM
Cheng
D
D
McCarthy
M
M
Pennett
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000704:Analysis of Variance; D002386:Cataract / Q000473:pathology*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008875:Middle Aged; D010781:Photography / Q000295:instrumentation / Q000379:methods*