在早期的研究中，采用出、入瞳直径相等的双通系统进行人眼像差测量时，两个通道的奇像差相互抵消，造成奇像差(如彗差)无法测量。本文建立全新的模拟眼模型进行实验，验证双通系统在波前测量时，是否存在人眼奇像差抵消的现象。采用典型双通系统——哈特曼波前探测系统进行实验，并将出瞳光阑直径固定为6 mm，改变系统入瞳光阑大小（1~8 mm）。实验结果表明，双通系统中，人眼奇像差在出、入瞳直径相等时可测，且人眼奇像差测量与出、入瞳直径差异无关，因此人眼奇像差测量在双通系统中不存在抵消的现象。

In the early studies, when the double-pass system with the same diameter is used for the measurement of the human eyes aberration, the odd aberrations (such as coma) are cancelled because the odd aberrations of the two channels cancel each other out. A new model eye is proposed to verify whether the human eye′s odd aberrations are cancelled in double-pass system. Entrance pupil size (1-8 mm) is changed and exit pupil is fixed to 6 mm. The results shows that human eye′s odd aberration could be measured by a typical double-pass system, that is Hartmann wave-front sensor system. Human eye′s odd aberration is not related to the size of entrance pupil and exit pupil. Finally, the conclusion that the double-pass system does not cancel human eye′s odd aberration is obtained.