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Precision Vision has been the leader in reading card production for use in research and near vision assessment for many years with the MNread and Colenbrander Reading cards. Now, we include the Radner Reading Cards and would like to more fully introduce to you the features, history and how they were developed to assist in patient care and research. CONTENTS |
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RADNER Reading Cards - Now available at Precision Vision
Radner Reading Cards are the latest addition to the Precision-Vision reading card line. The Radner Reading Charts system was developed by the Ophthalmologist Wolfgang Radner, MD in Vienna in interdisciplinary cooperation with Psychologists, Linguists, Physicists and Statisticians. They come in the form of a booklet (size: letter) with three reading cards, a card with numbers, and one with Landolt rings. It also includes clear instructions and evaluation sheets.
The Radner Charts are the first to offer optimized sentences optotypes of highly standardized grammatical construction, being equal in number (14 words), position and length of words. Sentence optotypes have been selected statistically to ensure same difficulty level and reading time. For each language the sentences optotypes have been developed by taking language characteristics into account. In a second step this Reading Chart system has been statistically carefully proven according to most recent statistical requirements, to achieve best quality for clinical and research purposes. All results have been published (see: selection of publications below). The Radner Reading Charts are logarithmically scaled in logRAD (reading equivalent of logMAR) but also offer Visus, M and the US-Snellen scaling for 32cm and 40 cm. A correction scale for varying reading distances given on each chart allows to achieve well defined logRAD results for every reading distance. The high quality of standardization facilitates accurate reading acuity determinations in everydays practice. It has also been successfully used in a wide range of clinical research projects.. Overall a practically very useful tool. |
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Featured Reading Card ProductsThe Radner reading chart is a highly standardized multilingual reading test system that was recently developed for clinical practice and research. During the past few years it has become an international project; together with several universities developed an international and interdisciplinary cooperation with psychologists, linguists, statisticians and ophthalmologists. The result of the collaboration is a standardized, valid and reliable reading test system, available in numerous languages. |
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Upcoming TradeshowsVisit Precision Vision at the following tradeshows. If you are attending one of these tradeshows and want to avoid unnecessary shipping costs and delays, we'd be happy to bring small portable products to the meeting. Place your order online or call us at 800-772-9211. Just be sure to tell us which tradeshow to hold the products for.
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Share Your Stories With Us!Precision Vision® wants to hear your stories. Tell us how you are impacting the industry. Do you have an interesting story to share about a Precision Vision® product? Contact us and we may use it in a future newsletter. |
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Introduction to Visual Acuity Measurement Manual
The "Introduction to Visual Acuity Measurement" manual by Dr. August Colenbrander is a useful tool for many doctors and especially their staff. It addresses details and aspects of Visual Acuity Measurement that are not readily available. Reference tables and diagrams make it a valued reference. The manual provides guidance in selecting from the vast array of charts and devices available. Contents include Visual acuity, Letter chart measurements, Near Vision and Reading, Contrast Sensitivity, Low Vision tests and Pediatric tests. Please help us grow. All new sign ups for PV News will receive a FREE "Introduction to Visual Acuity Measurement" manual. Once they sign up for the newsletter, they'll be instantly taken to a page where they can download a PDF of the report for FREE as a thank you for working with us. Printed versions are also available upon request. If you received this email initially and you would like a copy of the report, please contact us today and we can forward it to you. If you received this newsletter from a colleague, click here to sign up and receive your FREE manual. |
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944 First Street | La Salle, IL 61301 | USA | PHONE: 815.223.2022 | FAX: 815.223.2224 |






