Astigmatism also is classified as regular or irregular. In regular astigmatism, the principal meridians are 90 degrees apart (perpendicular to each other). In irregular astigmatism, the principal meridians are not perpendicular. Most astigmatism is regular corneal astigmatism, which gives the front surface of the eye a football shape.
Astigmatism is an optical defect in which vision is blurred due to the inability of the optics of the eye to focus a point object into a sharp focused image on the retina.
Astigmatism also is classified as regular or irregular. In regular astigmatism, the principal meridians are 90 degrees apart (perpendicular to each other). In irregular astigmatism, the principal meridians are not perpendicular. Most astigmatism is regular corneal astigmatism, which gives the front surface of the eye a football shape.
regular astigmatism reg·u·lar astigmatism (rěg'yə-lər) n. Astigmatism in which the curvature in each meridian is equal throughout its course, and the meridians of greatest and least curvature are at right angles to each other.
Astigmatism is a common eye condition which is easily corrected. WebMD explains.
What is Irregular Astigmatism? People suffering from irregular astigmatism may experience headaches. Corrective lenses are the most recommended course of treatment for astigmatism. Routine eye exams can help detect vision or eye problems . While regular astigmatism can usually be corrected with glasses, contacts, or surgical reshaping, irregular astigmatism typically is less responsive.
Regular Astigmatism is a normal and very frequent visual problem that is easily and accurately corrected with eye glasses or conventional contact lenses. Irregular Astigmatism is not normal and is
Regular astigmatism definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Look it up now!
Astigmatism occurs when light is bent differently depending on where it strikes the cornea and passes through the eyeball. The cornea of a normal eye is curved like a basketball, with the same degree of roundness in all areas. An eye with astigmatism has a cornea that is curved more like a football, with some areas that are steeper or more rounded than others.
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