astigmatic

Từ điển WordNet v3.1 - WordNet Dictionary

adjective

of or relating to a defect in the eye or in a lens caused by a deviation from spherical curvature which prevents light rays from meeting at a common focus and so results in distorted images
• Ant:
anastigmatic
• Derivationally related forms:
astigmia, astigmatism

• Từ trái nghĩa / Antonyms:
  anastigmatic, stigmatic