| 摘要 |
<P>PROBLEM TO BE SOLVED: To continuously measure a visual field in the whole area of a measuring surface by continuously moving a visual target in the whole range or nearly the whole range (the whole range, hereafter) of the measuring surface in a dynamic perimeter, to precisely measure the visual field by providing a fixation keeping structure with which a patient can easily and stably keep looking at a fixed viewing point, and to allow the patient to operate the perimeter at home, or the like, for measuring the visual field of his/her own by providing a structure with which the perimeter itself having such features can be miniaturized. <P>SOLUTION: In the perimeter provided with the visual target T movable on the measuring surface S, the visual target T is spirally and continuously movable on the measuring surface S with the fixed viewing point as a center. <P>COPYRIGHT: (C)2004,JPO |
