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How can a vision test help in the diagnosis of astigmatism?

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A vision test may help diagnose astigmatism. You’ll read the letters on a standard eye chart from 20 feet away. If your vision is 20/20, you can see from 20 feet what a normal eye can see from 20 feet. If your vision is 20/80, you must be 20 feet away to see what a normal eye sees from 80 feet away.

From: Astigmatism Diagnosis and Treatment WebMD Medical Reference

SOURCES: 

Bradford, C (Editor) . American Academy of Ophthalmology, 2004.  Basic Ophthalmology

American Academy of Ophthalmology: “What Is Astigmatism?” and “What Causes Astigmatism?”

National Eye Institute: “Facts About Astigmatism.”

Reviewed by Alan Kozarsky on September 09, 2018

SOURCES: 

Bradford, C (Editor) . American Academy of Ophthalmology, 2004.  Basic Ophthalmology

American Academy of Ophthalmology: “What Is Astigmatism?” and “What Causes Astigmatism?”

National Eye Institute: “Facts About Astigmatism.”

Reviewed by Alan Kozarsky on September 09, 2018

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When should you call your doctor about your vision if you have diabetes?

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