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What is an auto refractometer used for?

An auto refractometer is used in eye exams to objectively measure a person's refractive error to provide a starting prescription for glasses or contact lenses. It's particularly useful for children and people with disabilities who have difficulty with traditional subjective eye tests. The device works by projecting light into the eye and analyzing the reflections to determine the degree of nearsightedness (myopia), farsightedness (hyperopia), and astigmatism

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