Standardization of Some of the Common Tests Used in Determining the Acuteness of Vision of School Children: A Thesis (Classic Reprint) - Softcover
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Excerpt from Standardization of Some of the Common Tests Used in Determining the Acuteness of Vision of School Children: A Thesis
Most, if not all of the tests, both letters and characters used for testing the acuteness of school children are based, in theory, at least, upon the Snellen test letters.
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Standardization of Some of the Common Tests Used in Determining the Acuteness
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Paperback. Zustand: New. Print on Demand. This book investigates the acuity of school children's vision and scrutinizes the reliability of various tests used to measure it, including the Snellen test. The author analyzes the Snellen test's history, structure, and its usage, and reveals inconsistencies in the size and style of letters and characters used by different manufacturers. The author then describes the methodology and results of a study comparing the visibility of the illiterate E with the Snellen test letters of the same dimensions. They also evaluate the effectiveness of the Snellen 12 ft., 16 ft. letters, or a dot, against letters to be seen at 20 ft., 30 ft., 40 ft., or 50 ft. The book concludes that the 20 ft. dot test is a reliable test for poor, normal, or acute vision, while the 16 ft. letter test is reliable for detecting severe vision defects. These findings challenge the traditional reliance on the Snellen test and provide valuable insights for improving vision testing methods in schools. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Bestandsnummer des Verkäufers 9781333300524_0
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Standardization of Some of the Common Tests Used in Determining the Acuteness of Vision of School Children A Thesis Classic Reprint
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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LW-9781333300524
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Standardization of Some of the Common Tests Used in Determining the Acuteness of Vision of School Children A Thesis Classic Reprint
Anbieter: PBShop.store UK, Fairford, GLOS, Vereinigtes Königreich
Verkäuferbewertung 5 von 5 Sternen
PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LW-9781333300524
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