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Author: Martin Sussman
Publisher: K-See Publications
ISBN: 9781888534122
Category : Behavioral optometry
Languages : en
Pages : 202
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Book Description
Author: Martin Sussman
Publisher: K-See Publications
ISBN: 9781888534122
Category : Behavioral optometry
Languages : en
Pages : 202
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Book Description
Author: Nicholas J. Wade
Publisher: MIT Press
ISBN: 9780262731294
Category : Medical
Languages : en
Pages : 492
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Book Description
This illustrated survey covers what Nicholas Wade calls the "observational era of vision," beginning with the Greek philosophers and ending with Wheatstone's description of the stereoscope in the late 1830s.
Author: Mark Changizi
Publisher: BenBella Books, Inc.
ISBN: 193525121X
Category : Science
Languages : en
Pages : 240
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Book Description
In The Vision Revolution: How the Latest Research Overturns Everything We Thought We Knew About Human Vision, Mark Changizi, prominent neuroscientist and vision expert, addresses four areas of human vision and provides explanations for why we have those particular abilities, complete with a number of full-color illustrations to demonstrate his conclusions and to engage the reader. Written for both the casual reader and the science buff hungry for new information, The Vision Revolution is a resource that dispels commonly believed perceptions about sight and offers answers drawn from the field's most recent research. Changizi focuses on four “why" questions: 1. Why do we see in color? 2. Why do our eyes face forward? 3. Why do we see illusions? 4. Why does reading come so naturally to us? Why Do We See in Color? It was commonly believed that color vision evolved to help our primitive ancestors identify ripe fruit. Changizi says we should look closer to home: ourselves. Human color vision evolved to give us greater insights into the mental states and health of other people. People who can see color changes in skin have an advantage over their color-blind counterparts; they can see when people are blushing with embarrassment, purple-faced with exertion or the reddening of rashes. Changizi's research reveals that the cones in our eyes that allow us to see color are exquisitely designed exactly for seeing color changes in the skin. And it's no coincidence that the primates with color vision are the ones with bare spots on their faces and other body parts; Changizi shows that the development of color vision in higher primates closely parallels the loss of facial hair, culminating in the near hairlessness and highly developed color vision of humans. Why Do Our Eyes Face Forward? Forward-facing eyes set us apart from most mammals, and there is much dispute as to why we have them. While some speculate that we evolved this feature to give us depth perception available through stereo vision, this type of vision only allows us to see short distances, and we already have other mechanisms that help us to estimate distance. Changizi's research shows that with two forward-facing eyes, primates and humans have an x-ray ability. Specifically, we're able to see through the cluttered leaves of the forest environment in which we evolved. This feature helps primates see their targets in a crowded, encroached environment. To see how this works, hold a finger in front of your eyes. You'll find that you're able to look “through" it, at what is beyond your finger. One of the most amazing feats of two forward-facing eyes? Our views aren't blocked by our noses, beaks, etc. Why Do We See Illusions? We evolved to see moving objects, not where they are, but where they are going to be. Without this ability, we couldn't catch a ball because the brain's ability to process visual information isn't fast enough to allow us to put our hands in the right place to intersect for a rapidly approaching baseball. “If our brains simply created a perception of the way the world was at the time light hit the eye, then by the time that perception was elicited—which takes about a tenth of a second for the brain to do—time would have marched on, and the perception would be of the recent past," Changizi explains. Simply put, illusions occur when our brain is tricked into thinking that a stationary two-dimensional picture has an element that is moving. Our brains project the “moving" element into the future and, as a result, we don't see what's on the page, but what our brain thinks will be the case a fraction of a second into the future. Why Does Reading Come So Naturally to Us? We can read faster than we can hear, which is odd, considering that reading is relatively recent,
Author: Clara A. Hackett
Publisher: Courier Corporation
ISBN: 0486452530
Category : Medical
Languages : en
Pages : 322
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Book Description
Thinking about laser eye surgery? Tired of glasses and contacts? Take a look at this easy-to-follow, step-by-step method for improving poor vision. Hackett's innovative self-help guide includes a basic 12-week program of simple routines and drills that are recommended for correcting nearsightedness, farsightedness, crossed eyes, color-blindness, glaucoma, cataracts, and other serious eye problems. Incorporating Dr. William H. Bates' treatment of systematic exercise and training — techniques generally applied in treating and rehabilitating handicapped patients — the text suggests that relaxation, eyesight training, and skillful use of psychological factors are important elements that can possibly lead to improved eye functions. Bates, a practicing New York City ophthalmologist, first demonstrated his method of improving defective vision in the 1920s. Since then, thousands of people have been helped by methods devised by the doctor and his pupils. A useful aid for anyone experiencing problems with their vision, this practical guide will also be of value to healthcare specialists.
Author: Li Zhaoping
Publisher: Oxford University Press, USA
ISBN: 0199564663
Category : Medical
Languages : en
Pages : 397
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Book Description
Vision science has grown hugely in the past decades, but there have been few books showing readers how to adopt a computional approach to understanding visual perception, along with the underlying mechanisms in the brain. This book explains the computational principles and models of biological visual processing, and in particular, primate vision.
Author: Ken Brandt
Publisher:
ISBN: 9780648762522
Category : Biography & Autobiography
Languages : en
Pages : 124
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Book Description
Poor eyesight never impacted author Ken Brandt's vision of what life could be. Positive Vision makes a rollicking good read from cover to cover. Whether galloping across the Montana range, exploring claustrophobic (and fiery!) caverns, chasing a thief through the streets of 1980s New York, or taking a plunge from a plane, his adventures are sure to entertain. Complementing the adventures are amusing and relatable anecdotes demonstrating the advantages of poor eyesight. Enjoy the exciting escapades and interesting insights. Seeing the bright side makes life more fun for you and those around you.
Author: Pete Greig
Publisher: David C Cook
ISBN: 0781412870
Category : Religion
Languages : en
Pages : 402
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Book Description
From the Upper Room of Pentecost to Azusa Street in Los Angeles, God has used prayer movements throughout history to change the world. Over fifteen years ago, a group of students gathered for a prayer vigil in Chichester, England—and the prayers they started haven’t stopped. Out of that first meeting came 24-7 Prayer: an international movement of prayer, mission, and justice that has reached Chinese underground churches, Indian slums, Papua New Guinea jungles, ancient English cathedrals, and even a brewery in Missouri. Red Moon Rising is the story of how that movement continues today—and how each of us can be a part of the miracles God is doing through a new generation.
Author: Julie Straw
Publisher: John Wiley & Sons
ISBN: 1118636538
Category : Business & Economics
Languages : en
Pages : 245
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Book Description
The culmination of six years of research and development, The Work of Leaders presents a simple structure that neatly captures the complexity of contemporary leadership. The goal of this book is to make this wealth of leadership insight accessible to anyone who wants better results as a leader. The work that leaders do—the work that really matters—is boiled down to three areas: crafting a vision, building alignment, and championing execution. Vision, Alignment, and Execution are “magic words.” They strike a chord that turns the goal of leadership into tangible steps. With passion and insight, the authors draw from the best-known leadership authorities, while leveraging their unparalleled access to data from thousands of leaders and followers and their connections to hundreds of organizational development consultants. Interwoven with humor and drawing from real-world scenarios, The Work of Leaders distills leadership best practices into a simple, compelling process that helps leaders at all levels get immediate results.
Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
ISBN: 0309439981
Category : Medical
Languages : en
Pages : 587
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Book Description
The ability to see deeply affects how human beings perceive and interpret the world around them. For most people, eyesight is part of everyday communication, social activities, educational and professional pursuits, the care of others, and the maintenance of personal health, independence, and mobility. Functioning eyes and vision system can reduce an adult's risk of chronic health conditions, death, falls and injuries, social isolation, depression, and other psychological problems. In children, properly maintained eye and vision health contributes to a child's social development, academic achievement, and better health across the lifespan. The public generally recognizes its reliance on sight and fears its loss, but emphasis on eye and vision health, in general, has not been integrated into daily life to the same extent as other health promotion activities, such as teeth brushing; hand washing; physical and mental exercise; and various injury prevention behaviors. A larger population health approach is needed to engage a wide range of stakeholders in coordinated efforts that can sustain the scope of behavior change. The shaping of socioeconomic environments can eventually lead to new social norms that promote eye and vision health. Making Eye Health a Population Health Imperative: Vision for Tomorrow proposes a new population-centered framework to guide action and coordination among various, and sometimes competing, stakeholders in pursuit of improved eye and vision health and health equity in the United States. Building on the momentum of previous public health efforts, this report also introduces a model for action that highlights different levels of prevention activities across a range of stakeholders and provides specific examples of how population health strategies can be translated into cohesive areas for action at federal, state, and local levels.
Author: Arthur Bennett
Publisher:
ISBN: 9780851518213
Category : Religion
Languages : en
Pages : 0
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Book Description
