Optical remedy device 1, the boundary memory monitors the actual distance and actual relative angle of the head of 11 which includes the boundary information which defines boundary at least one illuminant control unit in order to control the operation of 2 and the said illuminant and the said illuminant concerning distance D of the head of the user for 10 and relative angular f and the said user, supervisory means 30 in order to generate the output signal which shows distance and the angle which were measured and, possesses. As for the said control unit, as for the said control unit, it has the entry section which is joined to the said supervisory means in order to receive the said output signal from the said supervisory means with the entry section which is joined to the said boundary memory in order to receive the said boundary information. As for the said control unit, the said output signal from the said supervisory means by comparison with the said boundary information, the head of the user and/or actual position of the eye and/or the alarm signal is given out to the case where direction is outside the said boundary.光治療装置1は、少なくとも1つの光源2と、該光源の動作を制御するための制御装置10と、該光源に対するユーザの頭部の距離D及び相対角度fについての境界を定義する境界情報を含む境界メモリ11と、該ユーザの頭部の実際の距離及び実際の相対角度を監視し、測定された距離及び角度を示す出力信号を生成するための監視手段30と、を有する。該制御装置は、該境界情報を受信するための該境界メモリに結合された入力部を持ち、該制御装置は、該監視手段から該出力信号を受信するための該監視手段に結合された入力部を持つ。該制御装置は、該監視手段からの該出力信号を該境界情報と比較し、ユーザの頭部及び/又は目の実際の位置及び/又は向きが該境界外である場合に、警告信号を発する。
