astigmatism

Meaning

Noun

• 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.
• 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.

Related

Similar words

• astigmia

Origin

• From + stem of Ancient Greek στίγμα ("mark, point") + . .