astigmatism
US /əˈstɪɡ.mə.tɪ.zəm/
UK /əˈstɪɡ.mə.tɪ.zəm/
名詞
乱視
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
例:
•
She has severe astigmatism and needs special corrective lenses.
彼女は重度の乱視があり、特別な矯正レンズが必要です。
•
Many people don't realize they have astigmatism until they get an eye exam.
多くの人は眼科検診を受けるまで、自分が乱視であることに気づきません。