PROBLEM TO BE SOLVED: To provide an ophthalmologic apparatus which can achieve a measurement of eyes refractive power or the like by a desired measured light quantity regardless of the subject eyes reflectance or the like.SOLUTION: A ophthalmologic apparatus includes: a measuring light source which projects a flux of measuring light to a subject eye a light-receiving optical system which receives a flux of reflected light from the subject eye reflecting the flux of the measuring light light quantity measurement means which measures the flux of the reflected light as a measured light quantity according to the signal which is obtained from the light-receiving optical system and is based on the subject eye a diaphragm which is placed in a light path from the light source to the subject eye and limits a spot diameter of the flux of the measuring light passing through a diffuser which is placed between the measuring light source and the diaphragm and diffuses the flux of the measuring light and control means which varies the relative positions of the diffuser and the diaphragm along the light path, according to the measured light quantity.COPYRIGHT: (C)2015,JPO&INPIT【課題】被検眼の反射率等によらず所望の測定光量により眼屈折力等の測定を実現可能とする眼科装置を提供する。【解決手段】眼科装置に対し、被検眼に測定光束を投光する測定光源と、測定光束の被検眼からの反射光束を受光する受光光学系と、受光光学系より得られた被検眼に基づく信号に応じて反射光束の光量を測定光量として測定する光量測定手段と、光源から被検眼に至る光路中に配置されて通過する測定光束のスポット径を制限する絞りと、測定光源と前記絞りとの間に配置されて測定光束を拡散させる拡散板と、測定光量に応じて、拡散板と絞りとの前記光路に沿った相対位置を変化させる制御手段とを配する。【選択図】図1
