astigmatic lens


Also found in: Medical.

astigmatic lens

[¦as·tig¦mad·ik ′lenz]
(optics)
A planocylindrical, spherocylindrical, or spherotoric lens used in eyeglasses to correct astigmatism. Also known as astigmat.
References in periodicals archive ?
One example of a fixed lens panoramic camera would be to use a convex mirror for capturing light of the surrounding panorama, an astigmatic lens for correcting astigmatism, a camera objective lens for converging light to a single point, a field flattening lens for converting polar format images into two-dimensional planar images and an image capture mechanism for capturing optimised two-dimensional annular images of the surrounding panorama.
The market potential for frequent replacement colored torics is large, because just one-in-fifty people with astigmatism wear colored lenses today, compared to one-in-six non astigmatic lens wearers.