| 摘要 |
A system and method is disclosed for determining the resolving power of an eye (150). An eye (150) is simultaneously illuminated with a first colored light source (1020) and a second colored light source (1040). The colored light sources (1020, 1040) are moved toward the eye (150). At a point where the eye (150) ceases to resolve the images of the two light sources (1020, 1040) the two colors of the light sources combine to form a third color. The eye (150) easily perceives the sudden appearance of the third color that indicates the loss of resolution. In an alternate embodiment a display screen (1100) provides two colored light sources (1120, 1140) that flicker at different flicker rates. By selecting certain values for the flicker rates the two colored light sources (1120, 1140) combine to form a light that does not appear to flicker at the point where the eye (150) ceases to resolve the images of the two colored flickering light sources (1120, 1140).
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