astigmatism

(redirected from regular astigmatism)
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Related to regular astigmatism: myopic astigmatism, hyperopic astigmatism
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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

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References in periodicals archive ?
Regular astigmatism is sub-classified into 'with-the-rule' and 'against-the-rule' astigmatism.
Regular astigmatism can be with-the-rule (WTR) ( greater than 0 to less than 30 or greater than 150- less than 180), against-the-rule (ATR) ( greater than 60 to less than 120) or oblique ( greater than 30-60 or greater than 120 to less than 150) astigmatism.
The present study was conducted to determine the status of frequency of different types of regular astigmatism and the amount with relation to age sub-groups and gender.
This article will discuss the key surgical options available for surgical treatment of regular astigmatism, with emphasis on the advantages and disadvantages of each option.
Conventional refractive error such as myopia (nearsighted), hyperopia (farsighted) and regular astigmatism are static.