astigmatism

UK:  [ə'stɪɡmə.tɪz(ə)m]

US:  [ə'stɪɡmə.tɪzəm]

n.

1.散光,乱视

2.象散性

3.散焦

4.【物理学】散像性,散像现象

1 . With such a constitution, decentering of the objective lens and the coma corrector does not occur, and hence astigmatism does not occur.
这种结构，*会发生物镜与彗差校*器的偏心，从而*会发生象散。

2 . Perhaps in the eyes acetify on some astigmatism, and this appears to have no major advantages that some lots still much to do.
也许，专注得眼睛发酸，有些散光，这才发现有些看来并无特大优势的地段，仍大有文章可做。

3 . Currently PRK can only be used to correct myopia and astigmatism, but hypermetropia may also be corrected by PRK in the near future.
目前手术只能用于纠正近视及散光，但也可能是远视矫正手术在不久的将来。

4 . First lets deal with astigmatism which can be seen very easy unless it is so slight then it will not be of importance.
首先让我们看像散，像散很容易被看到，除非特别轻微，那么对像质也就没有太大的影响了。

5 . The goal of this project is to provide a lowest cost refractometer that will measure refractive errors in the eye including astigmatism.
此项专题将提供一个测量眼睛屈光异常（包括散光）的低成本折射计。