PROBLEM TO BE SOLVED: To measure adjustment ability of a subjects eye while reducing influence caused by accommodative convergence.SOLUTION: A subjective optometer of an embodiment includes: a measurement optical system, a spherical power change unit, an optical axis deflection unit, and a deflection control unit. The measurement optical system comprises: a visual target that is presented to a subjects eye on a measurement optical axis and a spherical lens whose spherical power on the measurement optical axis can be changed. The spherical power change unit changes the spherical lenss spherical power. The optical axis deflection unit deflects the measurement optical axis. The deflection control unit makes the measurement optical axis agree with a visual axis of the subjects eye at which accommodative convergence has been caused by the spherical power change units change in the spherical lenss spherical power, by controlling the optical axis deflection unit on the basis of a previously measured AC/A ratio of the subject. The subjective optometer measures adjustment ability on the basis of the spherical lenss spherical power in a state in which the measurement optical axis has been deflected by the optical axis deflection unit.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】被検眼の調節力を、調節性輻輳による影響を低減して測定する。【解決手段】実施形態の自覚式検眼装置は、測定光学系、球面度数変更部、光軸偏向部、及び偏向制御部を有する。測定光学系は、測定光軸において、被検眼に呈示される視標と、測定光軸における球面度数が変更可能な球面レンズを備える。球面度数変更部は、球面レンズの球面度数を変更する。光軸偏向部は、測定光軸を偏向する。偏向制御部は、予め測定された被検者のAC/A比に基づいて光軸偏向部を制御することにより、球面度数変更部による球面レンズの球面度数の変更によって調節性輻輳が生じた被検眼の視軸に測定光軸を合致させる。自覚式検眼装置は、光軸偏向部によって測定光軸が偏向された状態における球面レンズの球面度数に基づいて調節力を測定する。【選択図】図1
