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What does axis mean on my eyeglass prescription?

Customer Question
What does axis mean on my eyeglass prescription?
Submitted: 7 months ago.Category: Eye
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Answered in 29 minutes by:
11/15/2017
Eye Doctor: Dr. Phil, MD, Medical Doctor replied 7 months ago
Dr. Phil, MD
Dr. Phil, MD, Medical Doctor
Category: Eye
Satisfied Customers: 59,387
Experience: Medical Doctor Trained at a Top Academic Institution
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Basically this is for people with an astigmatism that might need cylindrical power on their lenses. It tells the eye doctor where to position it. 90 is vertical. Is this helpful?
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