PROBLEM TO BE SOLVED: To provide a mechanism capable of acquiring reliable inherent characteristic information on an eye to be examined.SOLUTION: An ophthalmologic apparatus for examining an eye to be examined by irradiating light on to the eye to be examined includes: an optical member 207 that transmits at least one of the light irradiated to the eye to be examined and a reflected light from the eye to be examined as a ring luminous flux an image pickup device for picking up an image including a ring image based on the ring luminous flux that has transmitted the optical member 207 acquisition means for acquiring inherent characteristic information on the eye to be examined using the ring image included in the image acquired by the image pickup device and optical member switching means for switching the ring width of the optical member 207 in order to reduce ununiformity of the ring width of the ring image caused by the scattering of the light by turbidity of the eye to be examined and foreign matter adhering to the eye to be examined.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2017,JPO&INPIT【課題】信頼度の高い被検眼の固有特性情報を取得することが可能な仕組みを提供する。【解決手段】被検眼に光を照射して被検眼の検査を行う眼科装置において、被検眼に照射する光と被検眼からの光の反射光とのうちの少なくとも1つをリング光束として通過させる光学部材207と、光学部材207を通過したリング光束に基づくリング像を含む画像を撮像する撮像素子と、撮像素子で得られた画像に含まれるリング像を用いて被検眼の固有特性情報を取得する取得手段と、被検眼の混濁または被検眼に付着した異物による光の散乱によって生じるリング像のリング幅の不均一を低減するために、光学部材207のリング幅を切り替える光学部材切替手段を備える。【選択図】図4
