
好词典

源自希腊语 'a-' (无) + 'stigma' (点),字面意思是“无焦点”,反映了散光导致光线无法聚焦于单一点的光学特性。
❶ 散光,一种眼睛屈光不正的状况,导致光线无法在视网膜上形成单一焦点,造成视力模糊或变形。
“People with astigmatism often experience blurred vision at all distances.”
(患有散光的人通常在所有距离都会视力模糊。)
“Her astigmatism makes it difficult for her to read small print.”
(她的散光使她难以阅读小字体。)
correct astigmatism — 矫正散光,指通过眼镜、隐形眼镜或手术等方式改善散光引起的视力问题。
“Laser surgery can effectively correct astigmatism in many patients.”
(激光手术可以有效矫正许多患者的散光。)