Frequently Asked Questions/Astigmatism

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What is astigmatism?

Astigmatism is myopia in a specific axis of the eye, as opposed to myopia for the whole of the eye.

Is astigmatism genetic?

In 99% of cases, no - astigmatism is induced. Actual genetic astigmatism is incredibly rare.

Can you reverse astigmatism?

Yes. Many participants have been able to reduce their astigmatism correction.

How do I know if I have astigmatism?

If you have a prescription from an optometrist, look for Cylinder or CYL. The Cylinder value is your astigmatism. The axis value is the plane in which the astigmatism is present.

Blog post: Topic: How To: Test If You Need Astigmatism Correction (for Normalized Prescriptions)

Less than 1 diopter of CYL

In the majority of cases, you can ditch astigmatism correction entirely if it's under one diopter.

More than 1 diopter of CYL

What do I do for close-up?

Blog post: Topic: How to choose a Differential Prescription if You Have High Astigmatism
Blog post: Topic: Addressing > 1 Diopter Astigmatism For Close-Up (No content; video is private.)

What if I have high cylinder and low myopia?

Blog post: Topic: (Q&A) High Astigmatism, Low Myopia – Sph. To Cyl. Ratio Control