PROBLEM TO BE SOLVED: To provide a technique for an ophthalmic apparatus which uses a refractive-state variable lens, the technique enabling the calibration of the refractive-state variable lens and eliminating the need for an additional optical system for the calibration.SOLUTION: An ophthalmic apparatus 100 comprises: a measurement light projection system 30 for projecting measurement light onto an eyeground 101a of a subject eye 101 an ocular refractive characteristic detection system 40 which receives reflection of the measurement light, reflected off the eyeground 101a, and measures the refractive characteristics of the subject eye 101 a corneal geometry measurement system 20 for detecting a corneal geometry measurement pattern projected onto the cornea of the subject eye 101 and an objective lens 103 whose refraction state can be varied, and which is arranged in an optical path common to the measurement light projection system 30, the ocular refractive characteristic detection system 40, and the corneal geometry measurement system 20. The objective lens 103 is calibrated on the basis of a difference between the corneal geometry measurement patterns detected before and after the reflection state of the objective lens 103 is varied.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】屈折状態可変レンズを用いた眼科装置において、屈折状態可変レンズの校正が可能で、且つ、そのための追加の光学系を必要としない技術を提供する。【解決手段】測定光を被検眼101の眼底101aに投影する測定光投影系30と、前記測定光の眼底101aでの反射光を受光し、被検眼101の屈折特性を測定する眼屈折特性検出系40と、被検眼101の角膜に投影された角膜形状測定用のパターンを検出する角膜形状測定系20と、測定光投影系30、眼屈折特性検出系40および角膜形状測定系20に共通する光路中に配置された屈折状態を可変できる対物レンズ103とを備え、対物レンズ103の屈折状態を可変する前後において検出された前記角膜形状測定用のパターンの差に基づき、対物レンズ103の校正が行われることを特徴とする眼科装置100。【選択図】図1
