| 摘要 |
PROBLEM TO BE SOLVED: To provide a display device capable of evaluating quantitatively movements of the eyeball, especially, its relationship to ability to concentrate and ability to pay attention to, for display. SOLUTION: In this display device for vision characterization, a convergence- power value, a divergence-power value and an eye-position value at remote distance and close distance measured with an optometric device are arithmetically processed using predetermined arithmetic equations and procedures. The results are shown in the display device equipped with a center axis for the eye position which crosses with the center axis of the convergence power and the divergence power. The divergence power, convergence power and eye position over a predetermined remote- and close-distance are displayed on the center axis, and which direction the ability to concentrate on and to pay attention to is directed, can be known as it is displayed in a graph. |
