| 摘要 |
A pupil measuring apparatus comprises a mark 1d placed in a space where a background is observable from the two eyes E; a mark moving device 1e for moving the mark 1d between the two eyes E and the background; an illumination optical system 1g for illuminating the two eyes E from the background side; two cameras A, B for respectively imaging the two pupils PP; calculating means 2a to 2e for calculating areas or diameters of the respective pupils thus imaged, from video signals of the two cameras A, B; and a display 3 for providing an output of a graph of change in the areas or diameters calculated against a position of the mark 1d or a time associated with the position on a single screen.
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