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OphthoBook is the printed version of the amazing OphthoBook.com online book and video series. The combination of this text, along with the online video lectures, creates the most informative and easy-to-understand ophthalmology review ever written. It is geared toward medical students, optometry students, and non-ophthalmologists who want to learn more about the eye without getting bogged down with mindless detail. The book is broken down into ten chapters: 1. Eye History 2. Anatomy 3. Glaucoma 4. Retina 5. Infection 6. Neuroophthalmology 7. Pediatric Ophthalmology 8. Trauma 9. Optics 10. Lens and Cataract Each chapter also includes "pimp questions" you might be asked in a clinic. Also, an entire chapter of ophthalmology board-review questions, flashcards, and eye abbreviations. Perhaps most useful, each chapter corresponds to the 20-minute video lectures viewable at OphthoBook.com. And lots of fun cartoons!
When the eyeball is indented in total darkness, within less than 200 mil liseconds an oval or quarter-moon shaped spot of light is perceived in the part of the visual field corresponding to the indented region of the retina. In the seconds following, this phosphene extends across the whole visual field and alters in structure during further eyeball indentation. It is then seen as irregular large bright spots of light, finely structured moving light grains ('light nebula') and stationary bright stars. Regular geometrical patterns appear only when both eyes are indented simultaneously [1]. When the eyeball deformation is released, part of the retina again lights up for another one or two seconds and curved light lines are seen following the course of the larger retinal vessels (Fig. 1). In the following we will review the history of this phenomenon, which played an important role during the first 2200 years of vision theories and in the development of models to explain normal vision. 2. Pre-Socratic philosophers, Plato and Aristotle Alcmaeon of Croton (6-5th century B. C. ), who was a member of the Pythagoraean sect and one of the founders of Greek medicine, was the first to describe mechanical deformation of the eyeball leading to light sensa tions. According to Aristotle's pupil Theophrast of Eresos, Alcmaeon report ed that 'the eye obviously has fire within,for when the eye is struckfireflashes out' [2, p. 88].
"John Hughlings Jackson (1835-1911) was a preeminent British neurologist in the nineteenth and early twentieth centuries. He began to establish that standing in the 1860s, when he incorporated the evolutionary association psychology of Herbert Spencer into his early analyses of 'loss of speech' (aphasia). Jackson also benefitted from his early connection with the National Hospital, Queen Square, London, becoming its leading theorist. His nuanced theory of cerebral localization was derived from (1) his clinical observations of (what Charcot later called) Jacksonian epilepsy, in combination with (2) his innovation to think about neurophysiological events at the cellular level, as well as from (3) David Ferrier's primate localization data. The result was our modern conception of the seizure focus. The latter was crucial to the beginnings of modern 'brain surgery,' especially at the hands of Victor Horsley. Jackson's influence on the neurophysiology of Charles Sherrington is widely acknowledged but not well defined. In the larger Victorian culture, Jackson was a friend of George Henry Lewes, who was George Eliot's companion. Lewes attributed 'sensibility' to everything in the nervous system, thus maintaining a monist position on the mind-body relation, whereas Jackson maintained a form of psycho-physical parallelism that was actually dualist ('Concomitance'). Throughout his life Jackson had an interest in insanity, which he viewed from the point of view of Spencerian evolution and dissolution. The latter was an important component of Freud's psychoanalysis, which Freud took from Jackson. Late in his life Jackson defined the 'uncinate group of fits,' which was his definition of temporal lobe epilepsy"--
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.