Abstract

The recent interest in blue-on-yellow perimetry can be attributed to the increased sensitivity of the technique in detecting early glaucomatous visual field loss when compared to standard white-onwhite perimetry¹. The objective of blue-on-yellow perimetry is the isolation of a blue cone response (SWS). An intense yellow background to saturate the green (MWS) and red (LWS) cones, and a blue stimulus to preferentially stimulate the blue cones, are employed². There is evidence to suggest that the parvocellular ganglion cells conveying signals from the blue cones are of a larger diameter than other parvocellular cells³ and are preferentially damaged in glaucoma⁴.

© 1993 Optical Society of America