It is well-known that the most common and largely used assistive technology among the visually impaired community is the white cane. Many technologies have been proposed as alternative assistive devices to improve the autonomous mobility of people affected by visual diseases. Nevertheless, whatever is the physical quantity used by these active assistive technologies - mainly ultrasonic or optical sensors - they present many limitations and none of them adequately meets the international guidelines defined for the electronic travel aids and the specific requests coming from the visually impaired community. The first chapter of this book aims to provide an overview of the existing travel aids for people affected by visual diseases, discussing pros and cons of available technologies. The aim of the next chapter is to convince the reader that solutions based on mobile visual aid systems will answer a critical societal challenge. Chapter Three explores the use of electromagnetic technology in support of visually impaired athlete runners. Chapter Four describes the present state of mobile technologies development taking into consideration the point of view of visually impaired people. Finally, the goal of the concluding chapter is to relate how the audio-description has been produced as a communication accessibility resource.

Designed for students and professionals preparing for the ABO certification exam or wishing to quickly brush up on optical formulas, this easy-to-use workbook contains optical formulas, definitions, and walk-through problems with practical examples throughout. Rather than searching through dozens of optics books, readers will find all relevant information here in one source. Coverage includes everything from sine, cosine and tangent to resultant prism and resolving prism to polarized filters - and much more! Features a user-friendly format that facilitates the review process, with practical examples throughout. Provides a convenient review of optical formulas and basic math problems. Begins each chapter with a brief discussion of the topic, then proceeds with exercises and examples; answers are provided at the end of the book. New work-text design allows the reader to complete practice exercises within the book and section being studied. More complex formulas include "how to use the calculator" boxes, and multiple choice review sections have been added to the sections. Advanced exercises such as non-formula exercises are now included throughout.

Selected as a Doody's Core Title for 2022! The first new edition of Clinical Management of Binocular Vision in five years has been updated-across all chapters-with new guidelines and protocols based on the latest research in the field. You'll learn how to perform current, clinically accurate assessments, diagnoses, and therapies for a wide range of conditions. Each disorder is tackled in detail, touching on common symptoms, instrumentation, available treatment options, and more. New for this edition: 49 videos demonstrating proper diagnostic techniques and therapeutic procedures. Now with new information on concussion-related vision disorders. Enhanced guidelines for management of developing refractive error, including detailed description of preventative treatments for myopia. Formatted for easy reading, with succinct and bulleted text, numerous figures and illustrations, and step-by-step instructions. True-to-life case studies help you apply what you've read in a real-world clinical setting. Ideal for faculty, students who are new to the field, and veteran optometrists who need a refresh or easily accessible quick-reference. Enrich Your Ebook Reading Experience Read directly on your preferred device(s),such as computer, tablet, or smartphone. Easily convert to audiobook,powering your content with natural language text-to-speech.

Completely revised, updated, and redesigned, this classic dictionary by Dr. Michel Millodot continues to be an essential resource for all optometrists in training and in practice, as well as residents in ophthalmology. It is also a crucial source of information for anyone involved in vision science and in the optical industry. It now includes many new entries on pathology, pharmacology, investigative techniques, visual perception, optics and contact lenses. This edition presents all of the features that have made it so successful in the past, such as succinct, understandable definitions, comprehensive tables and illustrations, clinical advice, and extensive cross-references. Uniquely blending the best features of a textbook, a dictionary, and a practical handbook, Dictionary of Optometry and Vision Science remains a cornerstone for all those providing eye care, engaged in vision science, or entering the optical industry. Now includes definitions of over 5600 terms, as well as 90 tables and 253 illustrations that enhance understanding of many of the definitions. Expert ConsultT eBook version included with purchase. This enhanced eBook experience allows you to search all of the text, figures, and references from the book on a variety of devices.

Completely revised with the latest advances, evidence, and standards needed for everyday practice, Contact Lenses, 6th Edition, remains a definitive work on this multi-faceted topic, ideal for optometrists, dispensing opticians, ophthalmologists, and contact lens practitioners. This classic, superbly designed text is perfectly suited for health care professionals, providing all of the essential knowledge needed in one convenient volume. Provides up-to-date, authoritative information on contact lens materials and lens types, treatment in contact lens and tear film complications, and myopia correction and contact lenses for abnormal ocular conditions. Discusses current topics such as miniscleral lenses, keratoconus, corneal cross linking, and paediatric, cosmetic and prosthetic contact lenses. Includes NEW online access to ExpertConsult, with calculators and simulation programs for scleral lens fitting, sagittal values, soft toric mislocation, front vertex power, orthokeratology and rigid lens design, and more. Contains high-quality line diagrams and clinical illustrations to highlight key points in the text. Focuses on the evidence behind contact lens practice, enabling you to make informed choices about the care you give to your patients. Enhanced eBook version included with purchase. Your enhanced eBook allows you to access all of the text, figures, and references from the book on a variety of devices.

Through eight outstanding editions, Kanski's Clinical Ophthalmology has been the classic specialty textbook, providing the perfect ophthalmology foundation for trainees and a valuable reference source for experienced practitioners. Building on the previous edition by Dr. Brad Bowling, Dr. John Salmon from Oxford University has comprehensively revised the textbook. The 9th Edition retains Dr. Kanski's highly effective format of succinct text and visually dynamic presentation, providing authoritative, focused guidance on the diagnosis and management of ophthalmic disorders. Extremely well organized and comprehensive in scope, this visually stunning book reflects the latest advances in the field, facilitating quick comprehension to enhance learning, aid exam preparation and guide clinical practice. As a general ophthalmic textbook, this is the gold standard. Uses targeted text, bulleted lists, tables, and visual aids to highlight salient points across all ophthalmology subspecialties. Includes 2,600 illustrations, including more than 1,000 new images of common and rare conditions and arrows to show the exact pathology. Features detailed updates on new therapeutic interventions for neurological disease and ocular tumours; new imaging techniques such as OCT, OCT angiography, and MRI; and new topics such as circadian rhythms, graft vs host disease and the effects of Ebola virus infection on the eye. Presents examination techniques in a new, separate chapter and contains new "tips" on key issues in every chapter. Provides up-to-date information on hot topics such as intravitreal treatment with anti-VEGF agents for macular disease, genetic advances in hereditary retinal dystrophies, the use of biological agents in the treatment of uveitis and scleritis and new surgical advances such as MIGS for glaucoma and limbal stem cell grafting. Enhanced eBook version included with purchase. Your enhanced eBook allows you to access all of the text, figures, and references from the book on a variety of devices.

Fully revised and updated throughout, the fourth edition of the Oxford Handbook of Ophthalmology now includes free access to the ophthalmic online media bank, a selection of high-quality clinical images and videos for a wide breadth of key ophthalmic diseases. Clear, concise, and practical, this handbook provides immediate access to the detailed clinical information you need, in casualty, clinic, theatre, and on the wards. The core of the book comprises a systematic synopsis of ophthalmic disease directed towards diagnosis, interim assessment, and ongoing management. Assessment boxes for common clinical conditions and algorithms for important clinical presentations illustrate this practical approach. The information is easily accessible, presented in a clear format with areas of importance highlighted. Key sections for the trainee include: Clinical Skills, Aids to Diagnosis, Investigations and their Interpretation, Perioperative Care, Theatre Notes and Therapeutics. The wider practise of eye-care is supported by expanded chapters on Refractive Ophthalmology, Vision in Context, Evidence Based Ophthalmology and Resources for Ophthalmologists. Now including newer treatments across a range of specialities such as SMILE, gene-therapy and retinal prostheses, as well as greater emphasis on the evidence underlying current clinical practice and guidelines, this handbook has never been more essential for all those working in eye-care. Whether you want to learn about patient-reported outcomes, identify a surgical instrument, interpret a statistical test, or diagnose and treat ophthalmic emergencies, you will find it here. Whatever your role in caring for patients with eye disease: ophthalmologist, optometrist, orthoptist, ophthalmic nurse, or other health profession - discover for yourself why this handbook has become the 'go-to' resource for tens of thousands of eye-care professionals around the world.

Count on this complete guide to setting up and managing an optometric practice! Business Aspects of Optometry covers everything related to the business side of a practice - such as selecting a location and staff, equipping the office, office administration and personnel management, marketing, options for a specialty practice, controlling costs, billing and reimbursement, risk management, and financial planning. To succeed in practice, this is the one resource you need! Unique! Expert authors are practice management educators who teach the course in optometry schools. A logical organization makes it easy to find practical information on managing your own practice or purchasing your own practice. Coverage of different types of ownership includes self-employment, individual proprietorships, partnerships, and corporations. Coverage of cost control issues compares the selection and use of an optical laboratory versus an in-house finishing lab. Risk management and insurance coverage provides an overview of personal, life, liability, and disability insurance. Coverage of financial planning and tax reporting discusses topics including IRAs, retirement plans, estate planning, and personal and business tax issues. Bulleted lists, tables, figures, and boxes help you locate valuable information quickly. Checklists provide a logical progression in completing tasks. NEW chapters expand the book's scope of coverage, and include these topics: Personal and professional goal setting Resumes and interviews Debt management Principles of practice transfer Ethics Quality assurance Specialty practice Vision rehabilitation Coding and billing Financial decision making Exit strategies

Written by experts in the field, this comprehensive resource offers valuable information on the practical uses of drugs in primary eye care. Discussions of the pharmacology of ocular drugs such as anti-infective agents, anti-glaucoma drugs, and anti-allergy drugs lead to more in-depth information on ocular drugs used to treat a variety of disorders, including diseases of the eyelids, corneal diseases, ocular infections, and glaucoma. The book also covers ocular toxicology, focusing on drug interactions, ocular effects of systemic drugs, and life-threatening systemic emergencies. A logical organization makes it easy to find essential information. Complete coverage of the basic fundamentals of pharmacology such as ocular drug delivery and ocular drug formulations. Comprehensive reviews of the pharmacology of specific classes of agents such as the cycloplegics, antiglaucoma drugs, anti-inflammatory drugs, ocular irrigating solutions, and contact lens care products. In-depth information on ocular drugs used in clinical practice, including chapters on drugs used to treat eyelid disorders, lacrimal diseases, conjunctiva diseases, corneal diseases, allergies, uveitis, postoperative cataract, retinal diseases, and glaucoma. Coverage of ocular toxicology, including drug interactions, ocular effects of systemic drugs, and life-threatening systemic emergencies. Completely revised and updated content that reflects the latest advances in pharmacology. Updated information on post-operative drugs, including LASIK follow up medications. Expanded coverage in the chapters on Anti-infective Drugs, Anti-allergy Drugs and Decongestants, and Lubricants and Other Preparations of Ocular Surface Disease that includes the latest advancements in antibiotics and medications used to treat allergies and dry eye. A dosage quick reference guide on the inside front cover for quick and easy access. Information on the use of herbal medications.

This updated new edition is a practical guide to the evaluation, diagnosis, and treatment of systemic disorders as they relate to primary eye care. It incorporates a multidisciplinary approach, from the underlying pathophysiological mechanisms, to testing and diagnosis methods, to medical and surgical management. Clinical Medicine in Optometric Practice, 2nd Edition provides the reader with the information needed to make informed decisions about patient management, such as identifying symptoms and their related disorders, and knowing when to refer patients to a medical specialist. Shows how the wide range of medical conditions and their therapeutic strategies impact the delivery of eye care. Familiarizes the reader with the conditions that are encountered in practice, those that may present with ocular manifestations, and those that have significant importance to medicine in general. Organized in a practical, easily accessible format. Uses case presentations to demonstrate clinical test interpretation, differential diagnosis, treatment, and the development of a prognosis. Reflects the most current technologies in examination and testing. Features all-new illustrations in full color, illustrating systemic disorders, the physical exam, videotaping, dermatological conditions, and much more. Includes a new chapter on vascular disease, especially important since optometrists are sometimes the first to notice these types of changes. Contains new information on cardiovascular disease and carotid disease, including the effects that stroke may have on the patient.

The last ten years has seen significant regulatory changes and the issuing of professional advice to match developments in clinical practice. It has not been easy for clinicians to keep pace with the changes or to find information on how and when changes have occurred and this text provides an essential source to guide optometrists through the current regulatory and professional expectations.Although specifically designed for the optometrist the text will also be useful to anyone involved in the provision, regulation and monitoring of optometry services in the UK.Detailed chapters on the Opticians Act, General Optical Council and the National Health Service General Ophthalmic Service Regulations provide a foundation on the regulation for optometry practice. These chapters trace the development of the regulatory framework and the different roles played by various organisations and government. Additional chapters cover more detailed issues including requirements for Continuing Professional Development, Delegation and Supervision, Contact lenses, Referrals, Case Records and data protection, Fitness to Practice and Drugs and optometry. These all impact on day-to-day aspects of optometric practice and it is important for optometrists to understand how the requirements in these areas may affect an individual's ability to practise. The text also provides a useful reference source and a list of regulations relating to optometry practice in the UK.

The last ten years has seen significant regulatory changes and the issuing of professional advice to match developments in clinical practice. It has not been easy for clinicians to keep pace with the changes or to find information on how and when changes have occurred and this text provides an essential source to guide optometrists through the current regulatory and professional expectations.Although specifically designed for the optometrist the text will also be useful to anyone involved in the provision, regulation and monitoring of optometry services in the UK.Detailed chapters on the Opticians Act, General Optical Council and the National Health Service General Ophthalmic Service Regulations provide a foundation on the regulation for optometry practice. These chapters trace the development of the regulatory framework and the different roles played by various organisations and government. Additional chapters cover more detailed issues including requirements for Continuing Professional Development, Delegation and Supervision, Contact lenses, Referrals, Case Records and data protection, Fitness to Practice and Drugs and optometry. These all impact on day-to-day aspects of optometric practice and it is important for optometrists to understand how the requirements in these areas may affect an individual's ability to practise. The text also provides a useful reference source and a list of regulations relating to optometry practice in the UK.

Selected as a Doody's Core Title for 2022! This second comprehensive edition of Visual Development, Diagnosis, and Treatment of the Pediatric Patient combines basic concepts of vision development with clinical diagnosis and treatment of vision disorders in infants, toddlers, children, and adolescents. Heavily updated, with new sections on timely issues and topics, the book is ideal for anyone who needs to know the practical aspects of evaluation and care of pediatric patients. Contains brand-new chapters on special needs patients, assessment and anomalies of neurological function, electrodiagnostics, and sports & environmental vision. Now with four-color procedural images and line drawings. Covers both normal visual development as well as diagnosis, treatment, and management of common pediatric disorders. Contributions from 25 highly experienced clinicians in active practice. Not just for practicing or future optometrists; content on ocular tracking and fixing and eye/hand coordination is perfect for occupational, physical, and speech therapists. Enrich Your Ebook Reading Experience Read directly on your preferred device(s), such as computer, tablet, or smartphone. Easily convert to audiobook, powering your content with natural language text-to-speech.

The book is divided into a number of short chapters with each chapter dedicated to a single theme. For ease of reference, the most commonly useful topics are at the beginning and topics with narrower appeal, such as ocular aberrations, are placed towards the end. The book is divided into 5 sections, covering: * basic optical structure of the human eye * image formation and refraction of the eye (including refractive errors of the eye, measurement and correction) * interactions between light and the eye, considering transmission, reflection and scatter in the media of the eye and at the fundus * aberrations and retinal image quality * depth of field copics and age related changes in the optics of the eye The book concludes with 4 appendices, covering mathematics relating to paraxial optics, aberrations theory and image quality criteria and construction data, optical parameters and the aberrations of a number of schematic eyes. * A primer for all students of optometry and vision sciences covering optics of the normal eye and introducing them to refractive problems * * Presented in a clear and succinct style with a friendly approach, this book provides and up-to-date coverage of the aberrations and image quality of the eye

Cataract affects at least fifty million people worldwide. Conventional methods of correction have always been thick spectacles and surgery. With the current changes in the approach to cataract treatment, the optometrist's role in the early detection and management of cataract is crucial. * Written specifically for optometrists by optometrists * Essential background information is provided together with more detailed aspects of clinical management * The book is well illustrated and fully up to date with the latest clinical and research findings

"Fundamentals of Optical Waveguides" is an essential resource for any researcher, professional or student involved in optics and communications engineering. Any reader interested in designing or actively working with optical devices must have a firm grasp of the principles of lightwave propagation. Katsunari Okamoto has presented this difficult technology clearly and concisely with several illustrations and equations. Optical theory encompassed in this reference includes coupled mode theory, nonlinear optical effects, finite element method, beam propagation method, staircase concatenation method, along with several central theorems and formulas.
Since the publication of the well-received first edition of this book, planar lightwave circuits and photonic crystal fibers have fully matured. With this second edition the advances of these fibers along with other improvements on existing optical technologies are completely detailed. This comprehensive volume enables readers to fully analyze, design and simulate optical atmospheres.
* Exceptional new chapter on Arrayed-Waveguide Grating (AWG)
* In depth discussion of Photonic Crystal Fibers (PCFs)
* Thorough explanation of Multimode Interference Devices (MMI)
* Full coverage of polarization Mode Dispersion (PMD)

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.

Using a clinically oriented framework, this reference describes the basic aspects of eye movement control as well as clinical implications and practical use. Covers basic eye movement systems and eye movement recording systems along with listings of the various types, costs and characteristics of each. Extensive use of graphics, case studies and original eye movement recordings makes it an easy-to-use resource.