Provided is an ophthalmologic apparatus including: a scanning unit for scanning a measuring beam on a fundus of an eye to be inspected； an adjustment unit for performing focus adjustment for a plurality of image acquiring planes provided along an optical axis of the measuring beam projected on the fundus； a correction unit for correcting an aberration generated in the eye； an image acquiring unit for acquiring images for the plurality of image acquiring planes； and a calculation unit for calculating, in correspondence to a diopter of the eye, a focus displacement amount when an image of a first image acquiring plane is obtained and when an image of a second image acquiring plane at a predetermined distance away from the first image acquiring plane in the optical axis direction is obtained. The adjustment unit performs the focus adjustment in accordance with a calculation result in the calculation unit.
