Download or read book Ophthalmic Bifocal Lenses written by Harry L. Taylor and published by . This book was released on 1926 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bifocals written by Lucian Willis Bugbee and published by . This book was released on 1923 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Use of Bifocal Soft Contact Lenses in the Fort Rucker Aviation Environment written by Stephen E. Morse and published by . This book was released on 1997-08-01 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are problems with the compatibility of spectacles and certain helmet mounted electro-optical visual display systems. The incompatibility has been partially resolved with single vision contact lenses. However, these contact lenses have not helped senior aviators, who must wear bifocal glasses due to their presbyopia. The purpose of this study was to compare the performance of bifocal soft contact lenses with that of bifocal spectacle lenses to determine if contact lenses are an option for helping older aviators meet the visual requirements needed to fly military aircraft. Seventeen volunteer presbyopic aviators from Fort Rucker were fitted with five bifocal soft contact lens combinations and bifocal glasses. A four-phase investigation was conducted: a clinical phase involving the fitting of the bifocal contact lenses; a laboratory phase involving measurements of visual functions; a simulator phase involving measures of visual performance in simulated flight conditions; and an operational phase consisting of subjective responses regarding in-flight use of bifocal contact lenses. In general, vision in the best performing bifocal contact lenses typically was slightly reduced from vision in bifocal spectacles. The amount of the reduction, and whether it was clinically significant, depended on the refractive error of the subject (myopes generally performed better), the add group of the subject (low add group subjects performed better), and the type of bifocal contact lens. Aviators performed flight simulation maneuvers better in bifocal contact lenses than in bifocal glasses, and they evaluated their own ease of vision while performing aviation duties to be much easier in bifocal contact lenses than in bifocal glasses. In actual flight operations, each aviator preferred bifocal contact lenses over bifocal spectacles. Bifocal soft contact lenses are an acceptable
Download or read book The Use of Bifocal Soft Contact Lenses in the Fort Rucker Aviation Environment written by and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are problems with the compatibility of spectacles and certain helmet mounted electro-optical visual display systems. The incompatibility has been partially resolved with single vision contact lenses. However, these contact lenses have not helped senior aviators, who must wear bifocal glasses due to their presbyopia. The purpose of this study was to compare the performance of bifocal soft contact lenses with that of bifocal spectacle lenses to determine if contact lenses are an option for helping older aviators meet the visual requirements needed to fly military aircraft. Seventeen volunteer presbyopic aviators from Fort Rucker were fitted with five bifocal soft contact lens combinations and bifocal glasses. A four-phase investigation was conducted: a clinical phase involving the fitting of the bifocal contact lenses; a laboratory phase involving measurements of visual functions; a simulator phase involving measures of visual performance in simulated flight conditions; and an operational phase consisting of subjective responses regarding in-flight use of bifocal contact lenses. In general, vision in the best performing bifocal contact lenses typically was slightly reduced from vision in bifocal spectacles. The amount of the reduction, and whether it was clinically significant, depended on the refractive error of the subject (myopes generally performed better), the add group of the subject (low add group subjects performed better), and the type of bifocal contact lens. Aviators performed flight simulation maneuvers better in bifocal contact lenses than in bifocal glasses, and they evaluated their own ease of vision while performing aviation duties to be much easier in bifocal contact lenses than in bifocal glasses. In actual flight operations, each aviator preferred bifocal contact lenses over bifocal spectacles. Bifocal soft contact lenses are an acceptable.
Download or read book Ophthalmic Lenses and Prisms written by Charles Frederick Prentice and published by . This book was released on 1917 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ophthalmic Lenses and Accessories written by Bausch & Lomb Optical Company and published by . This book was released on 1916 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introduction to the Theory of Spectacles written by Otto Henker and published by . This book was released on 1923 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Essentials of Ophthalmic Lens Finishing E Book written by Clifford W. Brooks and published by Elsevier Health Sciences. This book was released on 2003-07-08 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt: Highly readable and packed with instructional photos and drawings, this book also features a separate kit for practicing lens edging layout at home. Proficiency tests for self-assessment are included for each chapter and are an excellent review for examinations. - Seven new chapters cover changes in the lens industry, lens insertion, rimless and semi-rimless frames, and lens tinting and engraving - Contains a centration skills booklet for practicing lens edging layout - Proficiency tests for self-assessment included with each chapter - Content has been completely updated, reorganized and expanded to include the most recent industry changes. - Updated photos illustrate the most current types of lenses and enhance comprehension of lens finishing. - Seven new chapters cover rimless and semi rimless frames; environmental and safety concerns; lens insertion and standard alignment; nylon cord and other groove mountings; lens tinting and engraving; progressive addition lenses; and lens impact and resistance testing. - An appendix of specific British Standards allows the book to easily travel to the UK and other countries that fashion their dispensing programs after the UK model. - The Lens Centration Skills Series provides exercises to practice lens finishing and reinforce material from the text.
Download or read book Diseases of the eye written by George Edmund De Schweinitz and published by . This book was released on 1921 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Jewelers Index written by and published by . This book was released on 1924 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Optician and Scientific Instrument Maker written by and published by . This book was released on 1925 with total page 1202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Federal Reporter written by and published by . This book was released on 1921 with total page 2116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Frames and Lenses written by Jenean Carlton and published by SLACK Incorporated. This book was released on 2000 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Basic Bookshelf for Eyecare Professionals is a series that provides fundamental and advanced material with a clinical approach to clinicians and students. A special effort was made to include information needed for the certification exams in ophthalmic and optometric assisting, low vision, surgical assisting, opticianry, and contact lens examiners. This book was written by a licensed dispensing optician for the express purpose of teaching optometric and ophthalmic assistants everything they need to know about frames and lenses. Ophthalmic frames are discussed in great detail, including basic principles, materials, special adaptations, and selection. Fitting and dispensing instructions are also included to help you satisfy your patients and customers.
Download or read book The Optical Journal and Review of Optometry written by and published by . This book was released on 1924 with total page 1802 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalogue of Optical and General Scientific Instruments written by and published by . This book was released on 1926 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Keystone written by and published by . This book was released on 1905 with total page 1352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book FDA Consumer written by and published by . This book was released on 1990 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
