astigmatic


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to astigmatic: astigmatic keratotomy

as·tig·mat·ic

(as'tig-mat'ik),
Relating to or suffering from astigmatism.

astigmatic

[as′tigmat′ik]
Etymology: Gk, a, stigma, without point
pertaining to astigmatism, or an error of refraction in which a ray of light is not sharply focused on the retinal tissue but is spread over a more diffuse area. Astigmatism is due to differences in curvature in the various meridians of the cornea and lens of the eye.

as·tig·mat·ic

(as'tig-mat'ik)
Relating to or suffering from astigmatism.

astigmatic

Of a lens, unable to focus a point image from a point object. Having ASTIGMATISM.

astigmatic 

Pertaining to astigmatism.
References in periodicals archive ?
31) LAVA (Innovia Technology) comprises a realistically rendered scene that the patient views with and without their cylinder power to see the difference the astigmatic correction makes.
By making her eye that is highly astigmatic and extremely nearsighted only mildly nearsighted and normally astigmatic, we can combine what we've done with conventional treatments and get her seeing letters on the eye chart that are smaller than 20/70.
Astigmatic keratotomy (AK) is a corneal refractive procedure that consists of making fine microscopic arcuate incisions or relaxing incisions with a surgical blade at the limbus (see Figure 3).
Approximately one-third of potential contact lens wearers require astigmatic correction.
The firm front lens holds the distance prescription including astigmatic and prism corrections.
SYNERGEYES has expanded its online resources for practitioners with the release of eight video tutorials on Duette Progressive, the company's contact lens for astigmatic presbyopes which is available in the UK from No7 Contact Lenses.
The consistent fit across the power range offers eye care practitioners a great option for a wide range of astigmatic patients.
With the addition of asphericity to the AcrySof([R]) Toric lens, which was already my lens of choice for astigmatic patients, I can now reduce spherical aberration, enhance image quality and improve functional vision for my cataract patients," said Edward Holland, M.
The Acuvue Oasys range is said to offer coverage for up to 99% of astigmatic and spherical patients, with nearly 5,000 parameter combinations for Acuvue Oasys for Astigmatism.
Additional studies show that toric soft contact lenses such as 1-DAY ACUVUE[R] MOIST[R] for ASTIGMATISM provide significantly better visual acuity compared to spherical lenses for astigmatic patients, and provide comparable visual acuity to wearing glasses (2)," he adds.
LASIK, or Laser In-Situ Keratomileusis - meaning to shape the cornea of the eye using a laser - is the most advanced procedures for correcting nearsighted, farsighted and astigmatic vision.
A significant challenge for astigmatic contact lens wearers is keeping the lens stable to ensure that their vision stays crisp and clear.