A position of a cornea center of an eye is detected. The apparatus includes at least three light sources that irradiate the eye with light, an imaging device that captures an image of the eye, a lens that is disposed between the imaging device and the eye, and a processor. Equipped with. The processor, based on the image captured by the imaging device, emits from each of the three light sources of the at least three light sources, and then reflects at a first point on the surface of the eye. The position of a second point, which is the incident position on the lens of the light that has entered the lens, is calculated, and for each of the three light sources, a plane that includes the light source, the first point, and the second point. To identify the intersection of the three planes identified for the three light sources as the corneal center of the eye, and perform a first detection procedure. [Selection diagram] Figure 1【課題】眼の角膜中心の位置を検出する。【解決手段】この装置は、眼に対し光を照射する少なくとも３つの光源と、前記眼の画像を撮像する撮像装置と、前記撮像装置と前記眼との間に配置されるレンズと、プロセッサとを備える。前記プロセッサは、前記撮像装置で撮像された前記画像に基づき、前記少なくとも３つの光源のうちの３つの光源の各々について、前記光源から出射した後、前記眼の表面の第１点で反射して前記レンズに入射した光の、前記レンズ上での入射位置である第２点の位置を計算し、前記３つの光源の各々について、前記光源と前記第１点と前記第２点とを含む平面を特定し、前記３つの光源について特定された３つの前記平面の交点を前記眼の角膜中心として特定する、第１の検出手順を実行するように構成されている。【選択図】図１
