PROBLEM TO BE SOLVED: To suitably make aberration measurements on the peripheral portion of an eye, regarding an ophthalmologic device having a measuring optical system for measuring the wavefront aberration of a subjects eye.SOLUTION: The ophthalmologic device includes: a wavefront aberration detection optical system for projecting measuring light toward the fundus oculi of the subjects eye, and receiving the reflected light by means of a wavefront sensor an irradiation position changer for changing the irradiation position of a measuring light beam on the fundus oculi and a controller for controlling the wavefront aberration detection optical system in order to correspond to a change in the irradiator caused by the irradiation position changer, and for controlling the brightness level of the reflected light in a detection signal outputted from the wavefront sensor. The wavefront aberration of the subjects eye is measured on the basis of the detection signal from the wavefront sensor.
