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Start Over Collections Medicine in the Americas, 1610-1920 ✖Remove constraint Collections: Medicine in the Americas, 1610-1920 Subjects Retinoscopy ✖Remove constraint Subjects: Retinoscopy Titles The measurement of refraction by the shadow-test, or retinoscopy ✖Remove constraint Titles: The measurement of refraction by the shadow-test, or retinoscopy

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  • The measurement of refraction by the shadow-test, or retinoscopy1