SUBJECTIVE OPTOMETER AND SUBJECTIVE OPTOMETRIC PROGRAM

To provide a subjective optometer and a subjective optometric program capable of executing an addition examination on an eye to be examined accurately.SOLUTION: A subjective optometer for subjectively measuring eye refractive power of an eye to be examined includes: correction means disposed in front of the eye to be examined for changing optical characteristics of a target light beam; acquisition means for acquiring at least a cylindrical correction quantity and an astigmatism axis correction quantity for the eye to be examined; and control means for controlling the correction means. The correction means includes a Stokes lens including a first cylindrical lens and a second cylindrical lens. The control means changes a composite axis angle of the first cylindrical lens and the second cylindrical lens to a predetermined axis angle based on the cylindrical correction quantity and the astigmatism axis correction quantity in an addition examination on the eye to be examined. The composite axis angle is an axis angle taking into account a deviation amount of the astigmatism axis correction quantity that occurs when assuming that an optical member and a cross cylinder lens are arranged for correcting the eye to be examined by the cylindrical correction quantity and the astigmatism axis correction quantity.SELECTED DRAWING: Figure 1 【課題】 被検眼の加入度検査を精度よく実行できる自覚式検眼装置および自覚式検眼プログラムを提供する。【解決手段】 被検眼の眼屈折力を自覚的に測定するための自覚式検眼装置であって、被検眼の眼前に配置され、視標光束の光学特性を変化させる矯正手段と、被検眼に対する少なくとも円柱矯正量と乱視軸矯正量を取得する取得手段と、矯正手段を制御する制御手段と、を備え、矯正手段は、第１円柱レンズと第２円柱レンズとを含むストークスレンズを有し、制御手段は、被検眼の加入度検査において、第１円柱レンズと第２円柱レンズとの合成軸角度を円柱矯正量と乱視軸矯正量とに基づく所定の軸角度に変更し、合成軸角度は、被検眼を円柱矯正量および乱視軸矯正量にて矯正するために光学部材およびクロスシリンダレンズを配置することを想定した際に生じる乱視軸矯正量のずれ量を考慮した軸角度である。【選択図】 図１