Adjective: astigmatic ,as-tig'ma-tik
- 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
"If you are astigmatic you will notice that some of the lines are darker in some directions than others"
Antonym: anastigmatic
Encyclopedia: Astigmatic