PROBLEM TO BE SOLVED: To prevent increase in the whole size of an apparatus and to make a safe measurement by preventing the apparatus from having contact with a subject.SOLUTION: The ophthalmologic apparatus includes: a parallel plate 13 (optical path changing means) 13 which partially has a wedge prism shape and deflects return light from an eye 1 to be examined irradiated with light from a slit light source 2 toward the slit light source 2 and a cornea cross section image acquiring section 102 which leads the deflected light to an imaging element 18 through a cornea thickness measuring optical system and acquires a cornea cross section image of the eye 1 to be examined.COPYRIGHT: (C)2013,JPO&INPIT【課題】装置全体の大型化を防止し、被検者に装置が接触しないようにして安全な測定を実現する。【解決手段】スリット光光源2からの光を照射した被検眼1からの戻り光を当該スリット光光源2側に屈折させる一部楔プリズム形状の平行平板13(光路変更手段)13と、屈折された光を角膜厚測定光学系を介して撮像素子18に導いて被検眼1の角膜断面像を取得する角膜断面像取得部102を有する。【選択図】図1