| 摘要 |
A psychophysical visual test is proposed for testing a person for glaucoma, and based on a frequency doubling phenomenon produced by iso-luminance color visual stimuli. More specifically, a visual stimulus (40) for which alternating colors in a grating pattern, is the only basis for producing the frequency doubling phenomenon. That is, the colors are of the same luminance or intensity level, i.e., iso-luminance, but each grating or pattern alternates from one color to another. Preferably, the colors are complementa ry color pairs, such as blue (50) and yellow (60).
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