Author: Naomi Hughes
Publisher: Page Street YA
ISBN: 1624148913
Category : Young Adult Fiction
Languages : en
Pages : 234
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Book Description
After an attack on earth, all reflective surfaces become weapons to release monsters, causing a planet-wide ban on mirrors. Despite the danger, the demand rises, and 17-year-old Marty Callahan becomes a distributor in an illegal mirror trade—until he’s caught by the mayor's son, whose slate is far from clean. Both of them are exiled for their crimes to one of the many abandoned cities overrun by fog. But they soon realize their thoughts influence their surroundings and their deepest fears begin to manifest. With fast pacing and riveting characters, this is a book that you’ll finish in one sitting.
Author: William J. Benjamin
Publisher: Elsevier Health Sciences
ISBN: 0702038970
Category : Medical
Languages : en
Pages : 2711
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Book Description
Now updated and expanded to cover the latest technologies, this full-color text on clinical refraction uses an easy-to-read format to give optometry students and practitioners all the important information they need. Also covers a wide range of other aspects of the eye exam, including anterior and posterior segment evaluations, contact lens, ocular pharmacology, and visual field analysis. Four new chapters cover wavefront-guided refraction, optical correction with refractive surgeries, prosthetic devices, and patients with ocular pathology. - Offer precise, step-by-step how-to's for performing all of the most effective refractive techniques. - Presents individualized refractive approaches for the full range of patients, including special patient populations. - Contriubtors are internationally recognized, leading authorities in the field. - New full-color design with full-color images throughout. - Completely updated and expanded to include current technologies. - A new chapter on Optical Correction with Refractive Surgeries, including keratoplasty, traditional refractive surgeries (e.g. LASIK and PRK), crystalline lens extraction with and without pseudophakia, the new presbyopic surgery, etc. - A new chapter on Wavefront Guided Refraction provides information on the advantages and limitations the Hartmann-Shack Method for objective refraction plus aberrometry and the refraction and the use of in the correction of the eye with spectacles, contact lenses, and refractive surgery. - A new chapter on Patients with Ocular Pathology reflects the most current knowledge of patients with ocular pathologies. - Provides information on Optical Correction with Prosthetic Devices, including corneal onlays, stromal implants, phakic intraocular lenses, etc. - Includes new chapters and/or discussions on such topics as: Aberrations of the Eye, Refractive Consequences of Eye Pathology, Diagnosis and Treatment of Dry Eye, Diagnosis of Pathology of the Anterior Segment, Diagnosis of Glaucoma, and Diagnosis of Pathology of the Posterior Segment. - Visual Acuity chapter expanded to include the effect of refractive error on visual acuity and statistics on how much of a change in visual acuity is significant. - Objective Refraction, Corneal Topography, and Visual Field Analysis chapters include the addition of new electro-optical and computer techniques and equipment. - Chapters on Multifocal Spectacle Lenses and Contact Lenses now cover newer progressive addition lenses and contact lenses that are now on the market. - Electrodiagnosis chapter revised to take a more clinical approach.
Author: Ajay Kumar Bhootra
Publisher: Jaypee Brothers Medical Publishers
ISBN: 9352708628
Category : Medical
Languages : en
Pages : 146
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Book Description
Retinoscopy is an eye exam that determines the refractive error of the eye (long sighted, short sighted, astigmatism). A refraction test indicates the strength of the prescription needed for glasses or contact lenses. The new edition of this book provides a concise overview of clinical refraction. Presented in an easy to read format, it is divided into two main sections. The first part explains basic clinical procedures for routine refraction, beginning with an introduction to instruments and the procedure, followed by aspects of the test for different disorders including myopia (short sightedness), astigmatism, keratoconus and refraction in children. Section two provides in depth discussion on retinoscopy and correct use of the retinoscope. The second edition has been fully revised and updated to explain the latest advances in the field, and is further enhanced by clinical images and figures. Key points Practical guide to clinical refraction and retinoscopy Fully revised and updated second edition Explains basic procedures and instruments for refraction test and refraction in different ophthalmic disorders Previous edition (9789351520634) published in 2014
Author: Clifford M. Krowne
Publisher: Springer Science & Business Media
ISBN: 3540721320
Category : Science
Languages : en
Pages : 380
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Book Description
This book deals with the subject of optical and electronic negative refraction (NR) and negative index materials NIM). Diverse approaches for achieving NR and NIM are covered, such as using photonic crystals, phononic crystals, split-ring resonators (SRRs) and continuous media, focusing of waves, guided-wave behavior, and nonlinear effects. It is perhaps the most comprehensive book on the new class of negative refraction materials, covering all aspects of negative refraction and negative index materials.
Author: Andrew William Keirl
Publisher: Elsevier Health Sciences
ISBN: 0750688890
Category : Medical
Languages : en
Pages : 354
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Book Description
It provides a comprehensive and clinically based guide to visual optics. With its suggested routines and numerous examples, this new book offers a straightforward "how to approach" to the understanding of clinical optics, refraction and contact lens optics. Designed for easy access, it presents information in a concise format that highlights key, need-to-know points. Part 1 addresses the basic visual optics of the eye along with emmetropia, ametropia and the correction of ametropia with spectacle lenses. Part 2 turns to the optics of contact lenses and the use of contact lenses in vision correction. Numerous worked examples based on real examination questions Practical and user friendly text Over 190 clear line diagrams An essential passport to examination success and a valuable quick reference for practitioners
Author: John Avison
Publisher: Nelson Thornes
ISBN: 9780174387336
Category : Juvenile Nonfiction
Languages : en
Pages : 520
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Book Description
A clear and easy to follow textbook including material on forces, machines, motion, properties of matter, electronics and energy, problem-solving investigations and practice in experimental design.
Author: Makoto Fujimura
Publisher: NavPress
ISBN: 1641587091
Category : Religion
Languages : en
Pages : 225
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Book Description
Embark on a profound journey through the depths of human emotion and spirituality in the updated anniversary edition of Refractions by renowned artist Makoto Fujimura. This timeless collection of reflective essays invites you to explore themes of grief, loss, tragedy, and disruption through the eyes of an artist's soul. Originally conceived in the shadow of the fallen twin towers of the World Trade Center, near where Fujimura's New York art studio stood, this anniversary edition includes new essays unpacking the author's further insights into his concepts of culture care and a theology of making. Refractions carries the weight of history and the urgency of the moment, illuminating beauty, healing, and hope. A gift for any artist or supporter of the arts, Refractions connects faith, art, and life, offering insight into healing with the wisdom and perspective of a leading contemporary artist and follower of Jesus, making beauty from ashes, and the gospel as a message as breathtaking and intricate as the lives it touches. In a world marred by violence and despair, Fujimura guides you toward a deep understanding of life's intricate tapestry, where beauty emerges from unexpected places, and healing finds its roots in the goodness of God and human resilience.
Author: David F. Chang
Publisher: SLACK Incorporated
ISBN: 9781556428593
Category : Medical
Languages : en
Pages : 964
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Book Description
The IOL technical specifications, the clinical data, and the necessary clinical and surgical skills comprise the scientific foundation for achieving a "premium" refractive outcome. To consistently achieve patient satisfaction, however, requires mastering the art of patient and IOL selection, communicating and counseling effectively, and providing a "premium" patient experience. This is a nontraditional book in which multiple experts are separately asked to discuss controversial subjects in a reader-friendly format. There is balanced coverage of all of the available refractive IOLs, as well as those that may become available in the near future. A major emphasis is placed on avoiding and managing complications or potentially dissatisfied patients. There are more than 200 chapters that are organized into 14 major sections, over 300 images, 100 tables, and 12 sidebars that cover every aspect of refractive IOL clinical practice. This is a comprehensive educational resource addressing the most demanding and rapidly evolving area in cataract and refractive surgery today and the first book to cover both the clinical and nonclinical aspects of offering refractive IOL services.
Author: OpenStax
Publisher:
ISBN: 9781680920451
Category : Science
Languages : en
Pages : 622
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Book Description
University Physics is a three-volume collection that meets the scope and sequence requirements for two- and three-semester calculus-based physics courses. Volume 1 covers mechanics, sound, oscillations, and waves. Volume 2 covers thermodynamics, electricity and magnetism, and Volume 3 covers optics and modern physics. This textbook emphasizes connections between between theory and application, making physics concepts interesting and accessible to students while maintaining the mathematical rigor inherent in the subject. Frequent, strong examples focus on how to approach a problem, how to work with the equations, and how to check and generalize the result. The text and images in this textbook are grayscale.
Author: G. V. Eleftheriades
Publisher: John Wiley & Sons
ISBN: 0471744743
Category : Science
Languages : en
Pages : 316
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Book Description
Learn about the revolutionary new technology of negative-refractionmetamaterials Negative-Refraction Metamaterials: Fundamental Principles andApplications introduces artificial materials that support theunusual electromagnetic property of negative refraction. Readerswill discover several classes of negative-refraction materialsalong with their exciting, groundbreaking applications, such aslenses and antennas, imaging with super-resolution, microwavedevices, dispersion-compensating interconnects, radar, anddefense. The book begins with a chapter describing the fundamentals ofisotropic metamaterials in which a negative index of refraction isdefined. In the following chapters, the text builds on thefundamentals by describing a range of useful microwave devices andantennas. Next, a broad spectrum of exciting new research andemerging applications is examined, including: * Theory and experiments behind a super-resolving,negative-refractive-index transmission-line lens * 3-D transmission-line metamaterials with a negative refractiveindex * Numerical simulation studies of negative refraction of Gaussianbeams and associated focusing phenomena * Unique advantages and theory of shaped lenses made ofnegative-refractive-index metamaterials * A new type of transmission-line metamaterial that is anisotropicand supports the formation of sharp steerable beams (resonancecones) * Implementations of negative-refraction metamaterials at opticalfrequencies * Unusual propagation phenomena in metallic waveguides partiallyfilled with negative-refractive-index metamaterials * Metamaterials in which the refractive index and the underlyinggroup velocity are both negative This work brings together the best minds in this cutting-edgefield. It is fascinating reading for scientists, engineers, andgraduate-level students in physics, chemistry, materials science,photonics, and electrical engineering.
