Comparison of the standard pseudoisochromatic plates--Parts 1 and 2--As screening tests for congenital red-green color vision deficiencies.
BACKGROUND
The Standard Pseudoisochromatic Plates-Part 2 (SPP-2) are designed primarily as a screening test for acquired color vision deficiencies. However, results from several studies suggest that the SPP-2 may also be effective as a screening test for congenital red-green color vision defects.


METHODS
In this study, the screening effectiveness of the SPP-2 was compared with the Standard Pseudoisochromatic Plates-Part 1 (SPP-1) to determine whether clinicians must use both tests: the SPP-1 to screen for congenital color vision defects and the SPP-2 to screen for acquired color vision defects.


RESULTS
The results showed that, when using the recommended scoring criterion for the SPP-1, the SPP-2 test is slightly more sensitive in detecting congenital red-green defects.


CONCLUSIONS
Clinicians can use the SPP-2 to screen for both congenital and acquired color vision defects.
Hovis
J K
JK
School of Optometry, University of Waterloo, ON, Canada.
Cawker
C L
CL
Cranton
D
D
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D003118:Color Perception / Q000502:physiology; D003119:Color Perception Tests / Q000379:methods*; D003117:Color Vision Defects / Q000151:congenital* / Q000175:diagnosis* / Q000503:physiopathology; D003627:Data Interpretation, Statistical; D006801:Humans; D008875:Middle Aged; D012680:Sensitivity and Specificity; D015351:Vision Screening