An anterior segment measuring apparatus includes: a light projecting optical system for forming a light section on an anterior segment a light receiving optical system for obtaining a cross-sectional image of the anterior segment by scattering of the light section at the anterior segment a displacement detection unit for detecting displacement in a direction orthogonal to the light section between the position where the actual cross-sectional image is acquired and the position of the expected cross-sectional image and a controller for forming the cross-sectional image of the anterior segment, processing the cross-sectional image to measure the anterior segment, and correcting a measurement result for the anterior segment based on a detection result by the displacement detection unit.