Astigmatism

Astigmatism: Introduction

Astigmatism: A condition which is characterized by ametropia caused by differences in the curvature of the refractive surfaces of the eye. See detailed information below for a list of 30 causes of Astigmatism, including diseases and drug side effect causes.

» Review Causes of Astigmatism: full list

Causes of Astigmatism

• Albinism - astigmatism
• Arthritis - short stature - deafness - astigmatism
• Atrophia aerata - astigmatism
• Bardet-Biedl Syndrome - astigmatism
• Bardet-Biedl syndrome, type 1 - astigmatism
• more causes...»

See all 30 causes of Astigmatism

Astigmatism: Symptom Checker

Listed below are some combinations of symptoms associated with Astigmatism, as listed in our database. Visit the Symptom Checker, to add and remove symptoms and research your condition.

Symptom Checker

• Astigmatism: Symptom Checker

Symptom Checker

• Astigmatism and Eye symptoms (29 causes)
• Astigmatism and Myopia (23 causes)
• Astigmatism and Abnormal eye movements (20 causes)
• Astigmatism and Eye twitching (20 causes)
• Astigmatism and Itching skin (20 causes)
• Astigmatism and Nystagmus (20 causes)
• Astigmatism and Vision changes (20 causes)
• Astigmatism and Visual problems (20 causes)
• Astigmatism and Infant symptoms (19 causes)
• Astigmatism and Behavioral symptoms (18 causes)
• Astigmatism and Body symptoms (18 causes)
• Astigmatism and Growth symptoms (18 causes)
• Astigmatism and Limb symptoms (18 causes)
• Astigmatism and Mental problems (18 causes)
• Astigmatism and Poor growth (18 causes)
• Astigmatism and Short stature (18 causes)
• Astigmatism and Impaired vision (17 causes)
• more...»

See full list of 500 Symptom Checker combinations related to Astigmatism

Astigmatism: Marketplace Products, Discounts & Offers

Products, offers and promotion categories available related to Astigmatism:

• Vision & Eye Care
• more product offers...»

Causes of General Symptom Types

Research the causes of these more general types of symptom:

• Eye symptoms (3991 causes)
• more symptoms...»

Causes of Similar Symptoms to Astigmatism

Research the causes of these symptoms that are similar to, or related to, the symptom Astigmatism:

• Vision symptoms (1952 causes)
• Short sighted
• Long sighted
• Blurred vision (772 causes)
• Double vision (172 causes)
• Visual error
• Corneal curvature
• Visual acuity
• Keratometry
• Refraction
• more symptoms...»

Astigmatism: Undiagnosed Conditions

Conditions that are commonly undiagnosed in related areas may include:

• Vision & Eye: serious diseases often undiagnosed:
  • Glaucoma -- Undiagnosed
  • Age-Related Macular Degeneration -- Undiagnosed
  • Cataract -- Undiagnosed
  • Diabetic Retinopathy -- Undiagnosed
  • more ...»
• more undiagnosed conditions...»

Astigmatism: Research Related Doctors & Specialists

• Eye Health Specialists (Ophthalmology):
  • Ophthalmology (Eye Specialist)
• more specialists...»

Other ways to find a doctor, or use doctor, physician and specialist online research services:

• Rate Your Doctor by Taking a Survey Online
• Research Your Doctor
• View Online Patient Surveys from Other Patients of Your Doctor
• Research local doctors and specialists including ratings, affiliations, and sanctions.

Home Diagnostic Testing and Astigmatism

Home medical tests possibly related to Astigmatism:

• Vision & Eye Health: Home Testing:
  • Home Eye Tests
  • Home Vision Tests
• more tests...»

Stories from Users for Astigmatism

Real-life user stories relating to Astigmatism:

• Myelitis and astigmatism?

Videos for Astigmatism

Article Excerpts about Astigmatism

Astigmatism is a condition in which the uneven curvature of the cornea blurs and distorts both distant and near objects. A normal cornea is round, with even curves from side to side and top to bottom. With astigmatism, the cornea is shaped more like the back of a spoon, curved more in one direction than in another. This causes light rays to have more than one focal point and focus on two separate areas of the retina, distorting the visual image. Two-thirds of Americans with myopia also have astigmatism. (Source: excerpt from Facts About the Cornea and Corneal Disease: NEI)

Astigmatism is a condition in which the uneven curvature of the cornea blurs and distorts both distant and near objects. A normal cornea is round, with even curves from side to side and top to bottom. With astigmatism, the cornea is shaped more like the back of a spoon, curved more in one direction than in another. This causes light rays to have more than one focal point and focus on two separate areas of the retina, distorting the visual image. Two-thirds of Americans with myopia also have astigmatism. (Source: excerpt from Facts About the Cornea and Corneal Disease: NEI)

Definitions of Astigmatism:

Astigmatism: [MIM*603047] (1) A lens or optic system having different refractivity in different meridians. (2) A condition of unequal curvatures along the different meridians in one or more of the refractive surfaces (cornea, anterior or posterior surface of the lens) of the eye, in consequence of which the rays from a luminous point are not focused at a single point on the retina. SYN: astigmia. [G. a- priv. + stigma (stigmat-), a point]
Source: Stedman's Medical Spellchecker, © 2006 Lippincott Williams & Wilkins. All rights reserved.

Unequal curvature of the refractive surfaces of the eye. Thus a point source of light cannot be brought to a point focus on the retina but is spread over a more or less diffuse area. This results from the radius of curvature in one plane being longer or shorter than the radius at right angles to it. (Dorland, 27th ed)
- (Source - Diseases Database)

(ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea
- (Source - WordNet 2.1)

Optical defect in which refractive power is not uniform in all directions (meridians); light rays entering the eye are bent unequally by different meridians, which prevents formation of a sharp image focus on the retina.
- (Source - CRISP)

Detailed list of causes of Astigmatism

The list below shows some of the causes of Astigmatism mentioned in various sources:

• Albinism - astigmatism
• Arthritis - short stature - deafness - astigmatism
• Atrophia aerata - astigmatism
• Bardet-Biedl Syndrome - astigmatism
• Bardet-Biedl syndrome, type 1 - astigmatism
• more causes...»

See full list of 30 causes of Astigmatism

How Common are these Causes of Astigmatism?

This information refers to the general prevalence and incidence of these diseases, not to how likely they are to be the actual cause of Astigmatism. Of the 30 causes of Astigmatism that we have listed, we have the following prevalence/incidence information:

• 0 causes are "very common" diseases
• 0 causes are "common" diseases
• 0 causes are "uncommon" diseases
• 0 causes are "rare" diseases
• 1 causes are "very rare" diseases
• 29 causes have no prevalence information.

See the analysis of the prevalence of 30 causes of Astigmatism

Conditions listing symptoms: Astigmatism:

The following list of conditions have 'Astigmatism' or similar listed as a symptom in our database. This computer-generated list may be inaccurate or incomplete. Always seek prompt professional medical advice about the cause of any symptom.

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What are the alternative names for Astigmatism:

Cylindrical refractive error
- (Source - Diseases Database)

Classifications of Astigmatism:

Medical Conditions associated with Astigmatism:

Eye symptoms (3948 causes)

Symptoms related to Astigmatism:

Vision symptoms (1866 causes), Short sighted, Long sighted, Blurred vision (712 causes), Double vision (111 causes), Visual error, Corneal curvature, Visual acuity, Keratometry, Refraction

Medical articles on signs and symptoms:

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These general medical articles may be of interest:

• Medical Symptom Books
• Symptoms of the Silent Killer Diseases
• Online Diagnosis
• Self Diagnosis Pitfalls
• Pitfalls of Online Diagnosis

See full list of premium articles on symptoms and diagnosis

News Archives for Astigmatism

Medical news articles related to Astigmatism include:

• Health Tip: Understanding Astigmatism
• more health news...»

Source: HealthDay News

Related medical articles from our Disease Center for Astigmatism:

• Introduction: Astigmatism
• Basic Summary for Astigmatism
• Videos for Astigmatism
• Symptoms of Astigmatism
• Misdiagnosis of Astigmatism
• Treatments for Astigmatism

More Ways To Research Medical Signs and Symptoms:

• Symptom Center - over 4,000 symptoms listed
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• Diseases Center - find symptom lists for over 13,000 diseases.
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