astigmatism

英 [əˈstɪɡ.mə.tɪ.zəm]      美 [əˈstɪɡ.mə.tɪ.zəm]
  • n. [眼科] 散光;[光][电子] 像散性;[光][电子] 像散现象
astigmatism
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将“astigmatism”分解为“a”和“stigmatism”。想象一个字母“A”弯曲成眼镜的形状,用来纠正视力中的“stigmatism”,即散光。这样的视觉联想可以帮助记忆这个单词的含义。

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astigmatism 散光

前缀a-, 不,非。词根stig, 点,刺,同stick. 指眼睛看东西不能聚成一点。

astigmatism (n.)
1849, coined by the Rev. William Whewell (1794-1866), English polymath, from Greek a- "without" (see a- (3)) + stigmatos genitive of stigma "a mark, spot, puncture" (see stick (v.)).
1. Maybe you fall asleep in class because of uncorrected astigmatism.
也许你在课堂上睡觉是因为你的眼睛散光.
2. They have what is called astigmatism.
他们有所谓散光.
3. Under astigmatism even narrow parallel light beams will not combine into one point.
有象散存在时甚至很窄的平行光束都不能会聚在一点.
4. Have the nearsighted patient of astigmatism, can you adorn invisible glasses?
患有散光的近视患者, 能佩戴隐形眼镜 吗 ?
5. Astigmatism can occur in addition to nearsightedness and farsightedness.
散光可发生在除近视和远视.