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

If your eye is squished on one side, called an astigmatism, your lenses should compensate for that.
Astigmatism: An astigmatism occurs when the cornea or lens (or both) are not perfectly symmetrical.
There is an optical condition of the eye known as astigmatism, in which the cornea is usually at fault.
* '' 'Astigmatism:' '' An astigmatism occurs when the cornea or lens (or both) are not perfectly symmetrical.
Another defect of the eye, known as astigmatism, is due to the fact that the eye does not always have a perfectly spherical front (cornea).
After the surgery, I definitely saw better - my previous vision had been -7 and -7.5 with severe astigmatism, which is a short step away from being totally non-functional - but after two weeks, I went back in for another corrective round.