astigmatism
US /əˈstɪɡ.mə.tɪ.zəm/
UK /əˈstɪɡ.mə.tɪ.zəm/
名词
散光
a defect in the eye or in a lens caused by a deviation from spherical curvature, which results in distorted images, as light rays are prevented from meeting at a common focal point
示例:
•
She has severe astigmatism and needs special corrective lenses.
她有严重的散光，需要特殊的矫正镜片。
•
Many people don't realize they have astigmatism until they get an eye exam.
许多人直到进行眼科检查才意识到自己有散光。