PROBLEM TO BE SOLVED: To provide a visual function measuring device capable of correctly evaluating the sensitivity characteristic of a retina even if the size of a pupil of a subject differs with an individual difference and/or miosis/pupillary dilatation reaction.SOLUTION: A visual function measuring device includes: a target display device an optical system for transmitting an image displayed on the target display device to a retina of a subjects eye and an aperture stop which is an aperture stop provided at a position optically conjugate with the pupil of the subjects eye, and the size of the aperture is set so that the light flux diameter in the pupil position of light transmitted from the target display device to the retina is smaller than the minimum pupil diameter supposed at the time of examination.COPYRIGHT: (C)2014,JPO&INPIT【課題】個人差および/または縮瞳/散瞳反応によって被検者の瞳孔の大きさが異なっても、網膜の感度特性を正しく評価できる視覚機能検査装置を提供する。【解決手段】視標表示装置と、前記視標表示装置に表示される像を被検者の眼の網膜へ伝達するための光学系と、前記被検者の眼の瞳孔と光学的に共役な位置に設けられた開口絞りであって、前記視標表示装置から網膜へ伝達される光の瞳孔位置における光束径を検査時に想定される最小瞳孔径よりも小さくなるように開口の大きさが設定された開口絞りとを備える。【選択図】図1
