An object of one aspect of the present invention is to obtain a measurement value in accordance with the condition of a crystalline lens of an examinees eye. An apparatus for measuring ocular axial length includes: a measuring unit which irradiates measurement waves toward a fundus of the examinees eye, and calculates the ocular axial length of the examinees eye based on detection signals obtained from reflected waves including waves reflected from the fundus and a determining unit which acquires reflection information related to an anterior segment of the examinees eye, extracts reflection signals corresponding to a reflection object between a cornea and a posterior capsule of a crystalline lens based on the acquired reflection information, and determines whether the examinees eye is a phakic eye or an IOL eye based on the extracted reflection signals.
