人眼像差的矫正是目前眼科界的研究热点之一,对于提高人眼视觉质量具有十分重要的意义,人眼像差的测量是像差矫正的基础.本文研究了主观式波前像差测量仪的测量原理,并对其中的图像采集、图像处理、图像的Ostu法阈值分割,自动跟踪等关键技术进行了研究.采用本文研究的关键技术自行研制出的主观式波前像差仪能精确地测量出人眼的低阶和高阶像差,测量结果可达7阶35项,其应用前景广阔.

The correction of human eye's aberration is one of the researching focuses in ophthalmology.It is of great importance to improve the visual performance of human eyes.The measurement of human eye's aberration is the foundation of the correction surgery.The paper studies the working principle of a subjective wave-front aberrometer and the key techniques of image sampling,image processing and analyzing,image segmentation with Ostu method and auto-tracing function.The self-produced aberrometer which used above key techniques can measure lower-order and higher-order aberrations accurately.The measure results can reach up to severnth order with 35 items.It will be widely used in the future.