An optical image measuring device, comprising: an optical system configured to split a broadband light that outputs a broadband low-coherence light into a signal light and a reference light, split an optical path of the reference light into a plurality of optical paths having different optical path lengths to split the reference light into a plurality of reference lights including a first reference light and a second reference light, make the plurality of reference lights propagated through the plurality of optical paths, respectively, interfere with the signal light propagated through a measured object, and generate an interference light that reflects a morphology in each of a plurality of depth positions of the measured object; a detector configured to detect the generated interference light to generate a first detection signal based on the first reference light and a second detection signal based on the second reference light; and an image forming part configured to form a first tomographic image representing the morphology of the measured object in a first depth position based on the first detection signal and to form a second tomographic image representing the morphology of the measured object in a second depth position based on the second detection signal; characterized by an analyzer configured to analyze the first tomographic image to determine a retinal surface region of the measured object, to analyze the second tomographic image to determine a corneal surface region of the measured object and to obtain a distance between a position in the retinal surface region and a position in the corneal surface region. an optical system configured to split a broadband light that outputs a broadband low-coherence light into a signal light and a reference light, split an optical path of the reference light into a plurality of optical paths having different optical path lengths to split the reference light into a plurality of reference lights including a first reference light and a second reference light, make the plurality of reference lights propagated through the plurality of optical paths, respectively, interfere with the signal light propagated through a measured object, and generate an interference light that reflects a morphology in each of a plurality of depth positions of the measured object; a detector configured to detect the generated interference light to generate a first detection signal based on the first reference light and a second detection signal based on the second reference light; and an image forming part configured to form a first tomographic image representing the morphology of the measured object in a first depth position based on the first detection signal and to form a second tomographic image representing the morphology of the measured object in a second depth position based on the second detection signal; characterized by an analyzer configured to analyze the first tomographic image to determine a retinal surface region of the measured object, to analyze the second tomographic image to determine a corneal surface region of the measured object and to obtain a distance between a position in the retinal surface region and a position in the corneal surface region.