Ray tracing aberration measurement of 2 stages, the preliminary stages which are measured due to the sounding beam which continually enters into the eye parallel into the optical axis and, enters into the same point continually, but the principal stage which is measured due to the eye sounding beam which tilts in the method in order to revise the change of refraction over entrance opening which was measured in preliminary stages is included. Principal stage of measurement is executed with combination of unit and profit, the one of them revises the fuzziness, another one revises higher order aberration. In one execution form, the sounding channel includes two two coordinate acousto-Optics acoustooptics detectors which possess korimeteingurenzu between. Procedure of measurement of principal stage can until it is achieved at the precision where wave front conjugation is appointed, repeating, repeatedly.< Selective figure > Figure 12段階のレイトレーシング収差測定は、光学軸に平行に連続的に目に入る探測ビームによって測定する予備的段階と、の同じ点に連続的に入るが、予備的段階において測定された入口開口にわたって屈折の変化を補正するための方法において傾いた目探測ビームによって測定する主要な段階を含む。測定の主要な段階は、ユニットの組み合わせで実行され得、その1つは、ピンぼけを補正し、別の1つは、高位収差を補正する。1つの実施形態において、探測チャネルは、間にコリメーティングレンズを有する2つの二座標音響光学検出器を含む。主要な段階の測定の手順は、波面共役が指定された精度で達成されるまで、反復して繰り返され得る。【選択図】 図1