astigmatism

IPA: ʌstˈɪgmʌtɪzʌm

(optics) A defect of a lens such that light rays coming from a point do not meet at a focal point so that the image is blurred.
(pathology) A disorder of the vision, usually due to a misshapen cornea, such that light does not focus correctly on the retina causing a blurred image.

Examples of "astigmatism" in Sentences

The optometrist diagnosed me with astigmatism, explaining that my cornea is not perfectly shaped
My astigmatism causes blurriness and distortion in my vision, especially at night
Wearing glasses or contact lenses can help correct astigmatism and improve my overall eyesight
People with astigmatism may experience headaches or eye strain due to the irregular curvature of their corneas
Regular eye exams are important for monitoring the progression of astigmatism and determining the best treatment options