| 摘要 |
PROBLEM TO BE SOLVED: To provide a perimeter capable of reducing a burden on a subject in a visual field examination.SOLUTION: The perimeter sequentially presents stimulation targets to a subject's eye from different portions on an optotypes part, and performs a visual field examination on the basis of responses of the subject to the presented stimulation targets. The perimeter includes an observation optical system having an imaging device for receiving reflected light of an anterior eye part of the subject's eye to capture an image of the anterior eye. A control unit of the perimeter processes the anterior eye image obtained by the imaging device to detect a visual axis of the subject's eye, corrects a presentation position of a stimulation target to the subject's eye by an amount of deviation between the visual axis of the subject's eye detected by the detection means and a visual axis of the subject's eye to be guided by a fixation point, and presents the visual target at a presentation position after the correction.SELECTED DRAWING: Figure 2 |
