An inspection window for the examinee to peek, a measurement optical system that objectively measures the eye refractive power of the eye through the inspection window, and a fixation target for the eye to be examined through the inspection window A fixation target presenting optical system to be presented, a presenting position changing means for changing the presenting position of the fixation target presented to the eye to be examined in the optical axis direction, and a relative for detecting the relative position of the measurement optical system with respect to the eye to be examined A position detection unit； and a drive control unit that activates automatic alignment by moving the measurement optical system with respect to the eye to be examined based on a detection result from the relative position detection unit. An eye refractive power measuring apparatus for measuring, an eye detection means for detecting reflection from an eye to be examined, and a control means for starting an automatic alignment operation by the drive control means with a detection signal from the eye detection means as a trigger； .被検者が覗くための検査窓と、前記検査窓を介して被検眼の眼屈折力を他覚的に測定する測定光学系と、前記検査窓を介して被検眼に対して固視標を呈示する固視標呈示光学系と、被検眼に対して呈示する固視標の呈示位置を光軸方向に変更する呈示位置変更手段と、被検眼に対する前記測定光学系の相対位置を検出する相対位置検出手段と、相対位置検出手段からの検出結果に基づいて前記測定光学系を被検眼に対して移動させることによって自動アライメントを作動させる駆動制御手段と、を備え、被検眼の眼屈折力を測定する眼屈折力測定装置であって、被検眼からの反射を検出する眼検出手段と、前記眼検出手段からの検出信号をトリガとして前記駆動制御手段による自動アライメントの作動を開始する制御手段と、を備える。
