PROBLEM TO BE SOLVED: To easily check a fusion state and perform measurement accurately in performing an examination in a state that both eyes are open.SOLUTION: An optometer 1 equipped with optical characteristic measuring means for projecting a target to right and left eyes to be examined and measuring optical characteristics of the eyes to be examined in a state that both eyes are open includes: anterior eye part acquisition means for acquiring an anterior eye part image of the right and left eyes while the optical characteristics on the eyes to be examined are being measured by the optical characteristics measuring means in a state that both eyes are open； analysis means for subjecting the anterior eye part image acquired by the anterior eye part acquisition means to analysis processing and acquiring information on a state that both eyes are open； determination means for determining the propriety of the information on the state that both eyes are open acquired by the analysis means and acquiring determination information； and output means for outputting the determination information acquired by the determination means.SELECTED DRAWING: Figure 1【課題】両眼開放状態での検査を行う際に容易に融像状態を確認することができ、精度よく測定を行う。【解決手段】左右の被検眼に視標を投影して、両眼開放状態にて被検眼の光学特性を測定する光学特性測定手段を備える検眼装置１であって、光学特性測定手段によって、両眼開放状態にて被検眼の光学特性の測定中において、左右の被検眼の前眼部画像を取得する前眼部取得手段と、前眼部取得手段によって取得された前眼部画像を解析処理して、両眼開放状態情報を取得する解析手段と、解析手段によって取得された両眼開放状態情報の良否を判定して判定情報を取得する判定手段と、判定手段によって取得された判定情報を出力する出力手段と、を備えることを特徴とする。【選択図】図１
