astigmatism
Definitions
A common vision condition caused by an irregularly shaped cornea or lens, resulting in blurred or distorted vision at all distances.
A defect in an optical system, such as a lens or mirror, that prevents light rays from converging at a single focal point.
Examples
My optometrist explained that my blurry vision is caused by a mild case of astigmatism.
After being diagnosed with astigmatism, she decided to switch from contact lenses to glasses to help with her eye strain.
Synonyms
refractive error vision defect visual impairment optical aberration