astigmatism


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  • noun

Synonyms for astigmatism

(ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea

(optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point

Synonyms

Antonyms

References in periodicals archive ?
Large or moderate amounts of astigmatism blur both distant and near vision and require optical correction.
This is a significant advancement in IOL technology because it allows surgeons to offer their patients who have pre-existing astigmatism a lens that provides quality vision at all distances after cataract surgery," said Kevin Buehler, Alcon's president and chief executive officer.
For spherical prescriptions, or with corneal astigmatism less than 1.
The Crystalens Trulign has an exceptional safety record in early clinical trials and remains stable inside the eye to correct nearsightedness, farsightedness and now astigmatism following cataract surgery.
But in most cases an astigmatism is present from birth.
Studies of challenging cases include CK for plano presbyopes, over-corrections, correction of astigmatism and postcataract astigmatism, and for treatment of keratoconus.
As of a couple of weeks ago, she also has 20/40 vision in both eyes, and no astigmatism.
Because standard contact lenses are free to rotate as they sit on the eye's surface, they can't correct for astigmatism, a condition in which the cornea doesn't have a spherical shape.
Food and Drug Administration (FDA) has approved wavefront-guided and mixed astigmatism indications for the ALLEGRETTO WAVE Eye-Q system.
1) Bennett and Rabbetts (2) analysed the incidence of ocular astigmatism, and concluded that approximately 6% of the population has ocular astigmatism over 2.
NEW FDA-APPROVED INTRAOCULAR LENS CORRECTS ASTIGMATISM AND IMPROVES NEAR, INTERMEDIATE AND DISTANCE VISION IN A SINGLE PROCEDURE
And Salz and others are now conducting trials to correct farsightedness complicated by astigmatism.
Long term risks of LASIK for myopia with and without astigmatism beyond 12 months have not been studied.
Intraocular Lens Provides Correction for Astigmatism while Delivering a Broad Range of Improved Vision for Patients Undergoing Cataract Surgery
K readings--these give the amount of corneal/lenticular astigmatism and allow you to choose a starting Back Optic Zone Radius (BOZR)