Astigmatism

Common Name(s)

Astigmatism

Astigmatism is a common and generally easily treatable defect of the eye that causes blurred vision. In a normal eye, light passes from an object that a person sees to the front surface (cornea) and through the inside (lens) of the eye. The curve of these parts of the eye refracts (bends) this light, creating one focused image for the back of the eye (retina). Astigmatism occurs when there is an abnormal curve of the cornea or lens, causing a poorly focused image. Astigmatism may occur in combination with nearsightedness (myopia) or farsightedness (hyperopia).

Symptoms of astigmatism may include blurred or distorted vision, eyestrain, and headaches. Astigmatism may be present at birth or it may develop after an eye injury, disease or surgery. Risk factors include a family history of astigmatism, excessive nearsightedness and farsightedness and a history of eye surgeries. Your eye doctor, either an optometrist or an ophthalmologist, can diagnose astigmatism through a comprehensive eye exam that evaluates your vision, curvature of your cornea and your ability to refract (bend) light properly.

Treatment of astigmatism may include eyeglasses, contact lenses or surgery. Talk with your doctor if you or someone you know has been diagnosed with astigmatism to learn more about treatment options.

Source: Advocacy organizations associated with the condition.

 

Advocacy and Support Organizations

 

Condition Specific Organizations

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Advocacy and Support Organizations

 

Condition Specific Organizations

Following organizations serve the condition "Astigmatism" for support, advocacy or research.

There are currently no organizations listed in Disease InfoSearch that support this condition. Create a listing.

 

 

General Support Organizations

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Scientific Literature

Articles from the PubMed Database

Research articles describe the outcome of a single study. They are the published results of original research.
The terms "Astigmatism" returned 226 free, full-text research articles on human participants. First 3 results:

Clinical outcomes of Transepithelial photorefractive keratectomy to treat low to moderate myopic astigmatism.
 

Author(s): Lei Xi, Chen Zhang, Yanling He

Journal:

 

To evaluate the refractive and visual outcomes of Transepithelial photorefractive keratectomy (TransPRK) in the treatment of low to moderate myopic astigmatism.

Last Updated: 31 Dec 1969

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Surgical technique for management of isolated lenticular coloboma with high corneal astigmatism.
 

Author(s): Simar Rajan Singh, Sonam Yangzes, Rohit Gupta, Jagat Ram

Journal: Indian J Ophthalmol. 2018 04;66(4):562-564.

 

We describe a surgical technique for the correction of isolated congenital lenticular coloboma associated with high corneal astigmatism. Transscleral fixation of the capsular bag with a single eyelet Cionni capsular tension ring was followed by in-the-bag implantation of a toric intraocular ...

Last Updated: 31 Dec 1969

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Scheimpflug topographical changes after Femtosecond LASIK for mixed astigmatism - theoretical aspects and case study.
 

Author(s): Bogdana Tabacaru, Horia Tudor Stanca

Journal: Rom J Ophthalmol. ;61(1):69-75.

 

To evaluate the corneal topographical changes after Femtosecond-LASIK surgery in eyes with mixed astigmatism. We present the analysis of the corneal Scheimpflug topographies of a patient treated with Femtosecond-LASIK technique for bilateral mixed astigmatism. Three-dimensional ...

Last Updated: 31 Dec 1969

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Reviews from the PubMed Database

Review articles summarize what is currently known about a disease. They discuss research previously published by others.
The terms "Astigmatism" returned 13 free, full-text review articles on human participants. First 3 results:

Toric Intraocular Lenses in the Correction of Astigmatism During Cataract Surgery: A Systematic Review and Meta-analysis.
 

Author(s): Line Kessel, Jens Andresen, Britta Tendal, Ditte Erngaard, Per Flesner, Jesper Hjortdal

Journal: Ophthalmology. 2016 Feb;123(2):275-86.

 

We performed a systematic review and meta-analysis to evaluate the benefit and harms associated with implantation of toric intraocular lenses (IOLs) during cataract surgery. Outcomes were postoperative uncorrected distance visual acuity (UCDVA) and distance spectacle independence. ...

Last Updated: 31 Dec 1969

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Objective evaluation of refractive data and astigmatism: quantification and analysis.
 

Author(s): S B Kaye

Journal: Eye (Lond). 2014 Feb;28(2):154-61.

 

The aim of this study was to present methods to improve the analysis of refractive data. A comparison of methods is used to analyse refractive powers using individual powers and aggregate data. Equations are also developed for the representation of the average power of a lens or refractive ...

Last Updated: 31 Dec 1969

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Visual acuity improvements after implantation of toric intraocular lenses in cataract patients with astigmatism: a systematic review.
 

Author(s): Blaise Agresta, Michael C Knorz, Christina Donatti, Daniel Jackson

Journal:

 

Cataracts are a common and significant cause of visual impairment globally. We aimed to evaluate uncorrected distance visual acuity (UDVA) as an outcome in treating astigmatic cataract patients to assist clinicians or ophthalmologists in their decision making process regarding available ...

Last Updated: 31 Dec 1969

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Clinical Trial Information This information is provided by ClinicalTrials.gov

Accuracy of Corneal Astigmatism in Different Region Modes
 

Status: Recruiting

Condition Summary: Astigmatism; Cornea

 

Last Updated: 10 May 2018

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Assessing the Astigmatism Reducing Effect With Toric IOLs in Eyeswith Low Astigmatism
 

Status: Recruiting

Condition Summary: Cataract; Astigmatism

 

Last Updated: 15 May 2018

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Comparison of Comfilcon A Toric Contact Lenses and Samfilcon A Toric Contact Lenses
 

Status: Recruiting

Condition Summary: Astigmatism

 

Last Updated: 1 May 2018

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