A 45-year-old member asked:
Describe difference is between regular and irregular astigmatism?
1 doctor answer • 2 doctors weighed in
Dr. Richard Bensingeranswered
Ophthalmology 54 years experience
Eye curvature: Lenses used by eye doctors to determine your need for refraction and eyeglasses, are based upon regular curves which for astigmatism optically are called toric. If the astigmatism is due to scar and some intrinsic disease like keratoconus, then the curve does not follow the toric pattern and the astigmatism is termed irregular. This may require a hard lens for correction.
Created for people with ongoing healthcare needs but benefits everyone.
5.5k viewsReviewed >2 years ago
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A 41-year-old member asked:
What is the difference between regular, irregular astigmatism?
1 doctor answer • 2 doctors weighed in
Dr. Joseph Barakehanswered
Ophthalmology 26 years experience
Correctability: Regular astigmatism is a refractive error produced when your eye generates an image as if the light rays passed through a regular shaped glass football. Irregular astigmatism is when the football is not shaped regularly, e.g. One end is fatter than the other. It is very difficult to fully correct vision by any technique in cases of irregular astigmatism; contacts are useful.
Created for people with ongoing healthcare needs but benefits everyone.
5.8k viewsReviewed >2 years ago
Last updated Dec 6, 2012
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