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.)).
实用例句
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.来自《简明英汉词典》
2. They have what is called astigmatism.
他们有所谓散光.来自辞典例句
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.来自辞典例句
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 ?来自互联网
5. Astigmatism can occur in addition to nearsightedness and farsightedness.
