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How Is Astigmatism Measured?

A woman sits behind a phoropter at the optometrist's office. A phoropter is a tool used to determine refractive errors

Your eye health and vision should be your eye doctor’s primary concern. Fortunately, diagnostic equipment allows the optometrist to check for anything that could affect your vision, including refractive errors like astigmatism. To check for astigmatism, your eye doctor typically uses a measurement tool called a phoropter to determine the shape and severity of the […]

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