PROBLEM TO BE SOLVED: To provide an affordable and space-saving ophthalmologic apparatus capable of correcting measurement variation caused by temperature change.SOLUTION: In the ophthalmologic apparatus, a measurement light source 201 serves dual function as an eye refractivity measurement light source and a positioning light source, and a diffusion plate 222 is insertably and removably arranged at a substantially conjugate position in the eyeground Er of a subjects eye E. With the diffusion plate 222 arranged within a light path 01 of light beams emitted from the measurement light source 201, the ophthalmologic apparatus causes part of the light beams from the light source 201 to transmit through the diffusion plate 222 and to be projected onto the cornea Ef of the subjects eye E so as to perform positioning. The ophthalmologic apparatus also causes part of the light beams from the light source 201 to be reflected off the diffusion plate 222 and uses an image obtained by receiving the reflected light beams to correct measured values.COPYRIGHT: (C)2015,JPO&INPIT【課題】安価、省スペースで温度変化による測定値補正を行う眼科装置を提供する。【解決手段】眼科装置において、測定用光源201が眼屈折力測定用の光源と位置合わせ用の光源とを兼用しており、被検眼Eの眼底Erに略共役位置に拡散板222が挿抜可能に配置され、眼科装置は、測定光源201から発する光束の光路01内に拡散板222が配置された状態で、光源201による光束が拡散板222を透過した光束を被検眼Eの角膜Efに投影して位置合わせを行い、かつ光源201による光束の一部が拡散板222で反射して生じた光束を受光して得られた画像から測定値を補正する。【選択図】図2
