Difference between revisions of Frequently Asked Questions/Astigmatism
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===High Astigmatism, Low Myopia=== | |||
Blog post: [https://endmyopia.org/qa-high-astigmatism-low-myopia-sph-to-cyl-ratio-control/ Topic: (Q&A) High Astigmatism, Low Myopia – Sph. To Cyl. Ratio Control] | |||
Revision as of 14:08, 4 September 2021
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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.)
High Astigmatism, Low Myopia
Blog post: Topic: (Q&A) High Astigmatism, Low Myopia – Sph. To Cyl. Ratio Control