Astigmatism is an anomaly of the optical system, occurring in the cornea or lens
, occasionally both, that causes an inability to obtain a focused image. A cataract
may lead to astigmatism. Persons with astigmatism have reduced visual acuity
and blurred vision, at no matter what distance, and confuse vertical, diagonal, and horizontal lines. Astigmatism is often tied to myopia
and hyperopia. Wearing glasses or contact lenses
can correct astigmatism, as well as laser surgery.
Original article published by
. Translated by Jeff
Latest update on November 12, 2013 at 05:48 AM by Jeff.