Lens Power In Action

This classic series by Dr. Kraskin, originally published by OEP in 2 volumes from 1981 to 1983, has been revised and reformatted into a single volume. The behavioral concept of vision recognizes that the critical element involved in the control and altering of behavior is a lens, wrote Kraskin in the original Introduction to Lens Power in Action. Lenses are the basic tool for the optometrist who practices behavioral vision care. Kraskin gives the reader a thorough overview of how optometrists uselenses to treat and prevent vision problems.

This is the first book that comprehensively examines Indigenous filmmaking in North America, as it analyzes in detail a variety of representative films by Canadian and US-American Indigenous filmmakers: two films that contextualize the oral tradition, three short films, and four dramatic films. The book explores how members of colonized groups use the medium of film as a means for cultural and political expression and thus enter the dominant colonial film discourse and create an answering discourse. The theoretical framework is developed as an interdisciplinary approach, combining postcolonialism, Indigenous studies, and film studies. As Indigenous people are gradually taking control over the imagemaking process in the area of film and video, they cease being studied and described objects and become subjects who create self-controlled images of Indigenous cultures. The book explores the translatability of Indigenous oral tradition into film, touching upon the changes the cultural knowledge is subject to in this process, including statements of Indigenous filmmakers on this issue. It also asks whether or not there is a definite Indigenous film practice and whether filmmakers tend to dissociate their work from dominant classical filmmaking, adapt to it, or create new film forms and styles through converging classical film conventions and their conscious violation. This approach presupposes that Indigenous filmmakers are constantly in some state of reaction to Western ethnographic filmmaking and to classical narrative filmmaking and its epitome, the Hollywood narrative cinema. The films analyzed are The Road Allowance People by Maria Campbell, Itam Hakim, Hopiit by Victor Masayesva, Talker by Lloyd Martell, Tenacity and Smoke Signals by Chris Eyre, Overweight With Crooked Teeth and Honey Moccasin by Shelley Niro, Big Bear by Gil Cardinal, and Atanarjuat: The Fast Runner by Zacharias Kunuk.

Visual Diagnosis and Care of the Patient with Special Needs provides a thorough review of the eye and vision care needs of patients with special needs. This book gives you a better understanding of the most frequently encountered developmental and acquired disabilities seen in the eye care practitioner's office. These disabilities include patients with autism, brain injury, Fragile X syndrome and Down syndrome, as well as those with psychiatric illness, dual diagnosis, and more. The text discusses, in great detail, the visual issues inherent in these populations and their possible treatment. A group of authors with approximately 500 years of experience in the field of eye care and special populations have been brought together to develop this comprehensive reference. It may appear that this book is written primarily for eye care practitioners such as optometrists and ophthalmologists, while vision is the overriding topic, this book serves as an excellent resource for a multitude of professions including those engaged in occupational therapy, physical therapy, speech and language therapy, physiatry, social work, pediatric medicine, and special education.

Visual dysfunctions can limit children's concentration, self esteem and school success as they struggle to understand fundamentals such as colors, letters and how to judge distance. With the right help, these obstacles can be overcome, allowing children to reach their full potential and see the world clearly. This accessible book explores how visual problems develop and how they can be reversed through effective and efficient visual therapy. It breaks down myths surrounding visual dysfunction and explains in straightforward terms the various conditions that could be impacting a child's perception, even if they have perfect sight. The visual therapy used in behavioral optometry retrains the brain to perform visual skills more effectively. In these pages there is clear guidance on the array of therapies, techniques and aids available, all of which can make a profound difference to a child's life. This introductory guide to behavioral optometry will be a welcome resource for parents and professionals in search of options to help a child who is experiencing visual problems.

The selection of appropriate formulas and surgical techniques is vitally important to best fulfill each patient's visual needs and expectations. With over 30 years of experience, H. John Shammas, MD clearly explains the importance of intraocular lens (IOL) power calculations during preoperative cataract evaluation and their role in positively improving surgical outcomes. Intraocular Lens Power Calculations addresses both currently used and the latest, more advanced formulas. To fully understand the application of these formulas in various situations, thorough explanations are provided. Numerous highlighted clinical applications, case reports, figures, and tables are also utilized to illustrate and reinforce key points. This well-organized text contains the most up-to-date information on axial length measurement, biometry units, constants, and ways to avoid errors. IOL power calculations and selection are included for an array of conditions ranging from the normal phakic eye to the more challenging high myopic and high hyperopic eyes, piggyback implantation, intumescent cataract, and the aphakic eye. Intraocular Lens Power Calculations updates surgeons, technicians, and students on all the techniques and formulas available to achieve the most accurate and precise calculations, thus paving the way for surgical results that fulfill patients' visual needs. Topics Include: New formulas including Holladay, Olsen, and Haigis IOL power calculations after corneal refractive surgery Calculating for emmetropia and iseikonia High precision A-scan biometry B-mode guided biometry Optical coherence biometry Selecting the proper IOL power