contact lens use under adverse conditions PDF Download

Author: Working Group on Contact Lens Use Under Adverse Conditions
Publisher: National Academies Press
ISBN:
Category : Medical
Languages : en
Pages : 52

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Author: United States. Congress. House. Committee on Interstate and Foreign Commerce. Subcommittee on Oversight and Investigations
Publisher:
ISBN:
Category : Soft contact lenses
Languages : en
Pages : 228

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Book Description

Author: National Research Council
Publisher: National Academies Press
ISBN: 0309044383
Category : Medical
Languages : en
Pages : 178

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Book Description
This book summarizes current understanding of the scientific, clinical, and technical issues surrounding the use of contact lenses. It discusses the special occupational conditions experienced by military personnel, particularly in extreme environments, that give rise to the question of whether or not to use contact lenses. Experts in optometry, ophthalmology, visual psychophysics, and engineering describe recent developments in design and use; and representatives of the military services provide examples of actual situations in aerospace settings. Considerations in Contact Lens Use Under Adverse Conditions will be of particular interest to those involved in the design of contact lenses and those responsible for occupational safety and health matters in the private sector.

Author: Rajesh Sinha
Publisher: JP Medical Ltd
ISBN: 9386150441
Category : Medical
Languages : en
Pages : 338

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Book Description
This book is a comprehensive guide to the complete field of contact lenses for optometrists and ophthalmic assistants. Beginning with an introduction to the evolution of contact lenses and the relevant anatomy and physiology, the following chapters explain the different types of contact lenses, materials and fitting, and lens solutions. Chapters dedicated to the use of contact lenses with certain ocular conditions such as astigmatism, keratoconus and aphakia, are also included. The final sections discuss complications associated with wearing contact lenses and also the fitting of lenses after refractive surgery. The fifth edition has been fully revised to provide the very latest information and features images, diagrams and tables to enhance learning. Key Points Comprehensive guide to contact lenses for optometrists and ophthalmic assistants Fully revised new edition providing latest information in the field Covers all types of contact lenses and potential complications Includes use of lenses with specific ocular disorders and after refractive surgery

Author: Milton M. Hom
Publisher: Elsevier Health Sciences
ISBN: 0750675179
Category : Contact lenses
Languages : en
Pages : 766

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Book Description
Part I. Basic Concepts -- 1. Anatomy and Physiology -- 2. Anterior Segment Disease and Contact Lenses -- 3. Examination and Instrumentation -- 4. Patient Selection new -- 5. CL optics new -- Part II. Gas-Permeable lenses -- 6. Gas-Permeable Lens Design and Fitting -- 7. Gas-Permeable Lens Fitting and Eyelid Geometry -- 8. Gas-Permeable Lens Fluorescein Patterns -- 9. Gas-Permeable Lens Materials -- 10. Modification and Verification -- 11. Gas-Permeable Lenses for Astigmatism -- 12. Gas-Permeable Lens Care and Patient Education -- 13. Gas-Permeable Cases -- Part III. Soft Lenses -- 14. Soft Lens Design, Fitting, and Physiologic Response -- 15. Soft Lens Materials -- 16. Soft Contact lenses and the Tear film -- 17. Soft Contact Lenses for Astigmatism -- 18. Soft Contact Lens Care and Patient Education -- Part IV. Extended wear -- 19. Gas-Permeable Extended Wear and Complications -- 20. Soft Extended Wear and Complications -- Part V. Special Topics -- 21. Dry Eyes and Contact Lenses -- 22. Monovision and Bifocals -- 23. Translating Bifocals -- 24. Keratoconus -- 25. Post-Penetrating Keratoplasty -- 26. Aphakia -- 27. Refractive Surgery and Contact Lenses -- 28. Pediatric Contact Lenses -- 29. Orthokeratology -- 30. Colored lenses -- 31. Scleral lenses -- Appendix A: Extended Keratometer Range with +1.25 D and -1.00 D Lenses -- Appendix B: Vertex Conversion Table of Plus and Minus Powers -- Appendix C: Keratometer Conversion (Diopter to Millimeters).

Author: Gerald Eugene Lowther
Publisher:
ISBN: 9780750691871
Category : Contact lenses
Languages : en
Pages : 434

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Book Description
This practical book covers the basics of contact lens terminology, care, solutions, fitting principles, patient education, and the management of aftercare problems for rigid and soft contact lenses. * - Covers the basics of contact lens terminology, care, solutions, fitting principles, patient education, and the management of aftercare problems for rigid and soft contact lenses. * - Practical emphasis *

Author: Costas S Patrickios
Publisher: Royal Society of Chemistry
ISBN: 1839161345
Category : Science
Languages : en
Pages : 337

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Book Description
Amphiphilic polymer co-networks (APCNs) are a type of polymeric hydrogel, their hydrophobic polymer segments and hydrophilic components produce less aqueous swelling, giving better mechanical properties than conventional hydrogels. This new class of polymers is attracting increasing attention, resulting in further basic research on the system, as well as new applications. This book focuses on new developments in the field of APCNs, and is organised in four sections: synthesis, properties, applications and modelling. Co-network architectures included in the book chapters are mainly those deriving from hydrophobic macro-cross-linkers, representing the classical approach; however, more modern designs are also presented. Properties of interest discussed include aqueous swelling, thermophysical and mechanical properties, self-assembly, electrical actuation, and protein adsorption. Applications described in the book chapters include the use of co-networks as soft contact lenses, scaffolds for drug delivery and tissue engineering, matrices for heterogeneous biocatalysis, and membranes of controllable permeability. Finally, an important theory chapter on the modelling of the self-assembly of APCNs is also included. The book is suitable for graduate students and researchers interested in hydrogels, polymer networks, polymer chemistry, block copolymers, self-assembly and nanomaterials, as well as their applications in contact lenses, drug delivery, tissue engineering, membranes and biocatalysis.

Author: Harold Aaron Stein
Publisher:
ISBN:
Category : Medical
Languages : en
Pages : 736

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Book Description
Updated and revised, the 4th Edition of this reader-friendly reference presents straightforward guidelines for proper contact lens fitting. Covering today's full range of contact lens types, it also explores how to manage some of the major complications of contact lens wear. Devoid of extraneous optical theory, it focuses on the "hands-on" information that readers need to know in order to provide complete well-eye care. Uses a reader-friendly, easy-to-understand writing style that makes correct fitting techniques easy to understand and apply. Includes tips on unusual fitting procedures, such as toric fitting and bifocal fitting. Contains guidance on advanced fitting techniques for keratoconus, toric lenses, and tinted contact lenses. Offers valuable appendices of conversion tables, compensation values, drugs commonly used in ophthalmology, and more. Covers all the latest topics, including refractive surgery and the use of contact lenses, bifocal contact lenses, disposable contact lenses, and the newest rigid gas-permeable lenses. Contains a wealth of new chapters addressing corneal topography, contact lens wear and ocular allergy, AIDS and contact lenses, and other timely subjects. Includes a wealth of new illustrations that demonstrate key principles and techniques. Features a new co-editor, Dr. Melvin Freeman--past president of the Contact Lens Association of Ophthalmologists. Presents a new appendix that translates commonly asked questions and instructions into more than 12 different languages, facilitating communication with non-English-speaking patients.

Author: Edward S. Bennett
Publisher: Lippincott Williams & Wilkins
ISBN: 9780781737050
Category : Medical
Languages : en
Pages : 1102

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Book Description
This comprehensive text and reference addresses the full scope of contemporary contact lens science and practice. With two expert editors and 100 first-rate contributors, the book presents practitioners and students in optometry and ophthalmology with key facts on corneal anatomy, recent research, contact lens design, patient evaluation, clinical applications, patient education, and complications of contact lens wear. More than 600 illustrations complement the text. Clinical Contact Lens Practice will be the standard text for required contact lens courses and will be an invaluable everyday reference for practitioners.

Author: Anthony John Phillips
Publisher: Butterworth-Heinemann
ISBN:
Category : Contact lenses
Languages : en
Pages : 1084

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