The visual system must extract from the light that falls on the retina meaningful information about what is where in our environment. At an early stage it analyzes the incoming sensory data along many dimensions of pattern vision, e.g. spatial frequency, orientation, velocity, eye-of-origin. Visual Pattern Analyzers provides a definitive account of current knowledge about this stage of visual processing. Nowhere else can such a comprehensive summarty of the lower level pattern analyzers be found. The book's emphasis is on psychophysical experiments measuring the detection and identification of near-threshold patterns -- and the mathematical models, such as multidimensional signal-detection theory, used to draw inferences from such experimental results -- but neurophysiological evidence is presented and compared critically to the psychophysical evidence. Introductory material on psychophysical methods, signal detection theory, and the mathematics of Fourier analysis is given in order to make the book more accessible to all who are interested in the lower or higher levels of visual perception. This volume will be of great value to researchers and graduate students in the fields of vision and perception. Within the scientific community there is wide interest in the visual system, and the book will be of use to investigators in many fields, including psychophysics, neuroscience, ophthalmology and optics, computer science, and cognitive and experimental psychology.

This series of multiple choice questions is based on the textbook Common Eye Diseases And Their Management (1985), also from Springer-Verlag. The questions have been grouped to fit in with the chapter headings in the latter. Many of the questions are supported by expanded answers but further information should be sought in the textbook. The format of the questions has been arranged so that the number of true or false answers varies and we have taken pains to eliminate the ambiguities which tend to creep into multiple choice question papers. In compiling these questions, we have attempted to incorporate a number of key facts and it will be seen that these have occasionally been repeated for emphasis. A surprisingly large amount of information is contained in questions and answers, and simply reading through both can be a useful learning experience in itself. The questions have been aimed at the medical student level but it is hoped that they may be of some value to general practitioners outside ophthalmology and perhaps also to postgraduates. The computerised Kuder-Richardson reliability index, which measures the consistency of a student's perform ance, has shown these questions to be reliable in assessing a students' knowledge. A sample of these questions has been tested in another medical school and we understand that students' marks there equate well with the results from essay questions."

Part of the new series Gems of Ophthalmology, this book provides the latest information in the diagnosis and management of retinal diseases and disorders. Beginning with an overview of diagnostic imaging techniques - ophthalmoscopy, angiography, fundus autofluorescence, and choroidal imaging, the next chapters discuss retinal disorders related to diabetes. The following sections discuss numerous disorders such as proliferative vitreoretinopathy, macular degeneration, macular holes, polypoidal choroidal vasculopathy, and much more. The final sections cover surgical management of retinal problems including giant retinal tears, retinoblastoma, cysts, retinal detachment, and microincision vitreoretinal surgery. This comprehensive text is further enhanced by clinical and surgical photographs, diagrams and tables. Other topics in the series include: Cornea & Sclera, Diseases of the Uvea, Glaucoma, and Cataract Surgery. Key points Comprehensive guide to diagnosis and management of retinal diseases Part of the new Gems of Ophthalmology series Covers many common and more complex disorders and diseases Other topics in the series include: Cornea & Sclera, Diseases of the Uvea, Glaucoma, and Cataract Surgery

This manual is written to assist the student of optics or the ophthalmology resi dent in reviewing optics. It is particularly suitable as an optics Board review. However, it was not intended to accomplish the far greater task of encompassing the entire field of geometric optics or even of teaching all that the ophthalmologist needs to know of visual optics or refraction. This manual represents the distillation of lecture notes for an optics Board-review course given at the Massachusetts Eye and Ear InfIrmary, Harvard Medical School, for the last seven years. This optics lecture series, which has also been given at Boston University and at the University of Southern California, has traditionally taken place over a week, with three two hour sessions. Obviously, this six-hour lecture series could not possibly cover the entire field of optics for clinicians. This optics Board-review lecture series has customarily involved a few problems at the end of each lecture which then provided a basis for a review that was given at the beginning of the next lecture. These problems have always proven a useful means of self-testing as well as practice for becoming more comfortable and facile with the concepts involved. The problems have not been taken from the American Board of Ophthalmology test materials, either written or oral. However, they incorporate many of the concepts and computational manipulations which are frequently tested on the ophthalmology boards."

The value of Age-Related Macular Degeneration has stood the test of time, but progress in both basic and clinical ophthalmology has been relentless, mandating the need for an updated book. This second edition focuses on the pathophysiology and the epidemiology of age-related macular degeneration (AMD), the clinical features and management of dry and wet AMD, imaging techniques, and medical therapy for both non-neovascular AMD and neovascular AMD. It describes both clinically validated and experimental therapies as well as rehabilitation technology, and presents strategies to prevent the progression of non-exudative AMD. Results from current clinical trials are also included. New chapters in this edition cover: Genetics and treatment Oxidative stress and its relation to the pathophysiology of AMD and CNV (choroidal neovascularization-a common symptom of wet AMD) Polypoidal choroidal vasculopathy Microperimetry and psychophysical testing and ways to track geographic atrophy progression Non-VEGF pathways Retinal stem cells

Emergency ophthalmology is an area full of pitfalls for the unwary primary care practitioner. Vitreoretinal disorders make up the majority of emergency sight-threatening conditions, and a wide and increasingly varied range of conditions of the eye present in primary care settings. Correct diagnosis at initial presentation, and appropriate and speedy referral, are extremely important. This book is therefore an essential reference for the primary care physician, who is often the first to see these patients and is in a position of responsibility for decision-making.

After a compound and its various effects - or, as the case may be, any particular one of these - have been discovered there is still a long way ahead until it is available for use in daily practice as a finished product. Before reaching the doctor, the substance is examined by chemists, pharmacologists and pharmacists - just to mention a few of the most important stages in a whole research sequence. Before the drug is finally made available on the market, the findings resulting from animal experiments must be confirmed in clinical studies. The expectations involved in its development must be met, and sufficient evidence has to be established as to the drug's effects and side effects, indications and contraindications, and the questions of safe use and appropriate dosage. Only then may the drug be registered and introduced to the market. In this respect Metipranolol eye drops, which have recently been launched on the market, formed no exception and had likewise to go through all these various stages. A series of investigators at many different centers participated in this procedure, and at the invitation of the manufacturers, Messrs. Dr. Gerhard Mann, they assembled for discussions at a symposium held in Berlin in January 1983, and reported on the substance and their experiences with it.

The second Committee Meeting of the Glaucoma Society of the International Congress of Ophthalmology was held in Carmel Valley ICalifornia from October 22-27, 1982. Traditionally this meeting was closed and preceded the International Congress of Ophthalmology in San Francisco. A group of roughly 80 experts on glaucoma - active members of the committee and invited guests - exchanged latest scientific experiences on the progress in pathophysiology, diagnosis and treatment of the glaucomas. The aim ofthe meeting was to provide quite informal presentations grouped around main topics and ample, lively discussions. The scientific and local organization was in the hands of Jack Hetherington Jr.lSan Francisco and Stephen M. Drance/Vancouver. It is the sincere wish of the society to express warmest thanks to Valerie Hetherington who took in a most charming and efficient way much of the burden of the local organization. The idea of pre-circulation of all scientific presentations 2-3 months before the meeting to all participants and guests proved to be effective with respect to fruitful and stimulating discussions at the site of the meeting. We thank all participants for their co-operation in sending their manuscripts in time. The society is indebted to Chibret Int. Pharmaceutical Company for generous support of this publication.

Essentials of Ophthalmology: For Medical School and Beyond is a concise reference text for the medical undergraduates and residents, but the contents will also benefit family physicians who really are the first line of eye-care givers in the community.Highly illustrated with 200 colour clinical pictures and illustrations, the book is written by the multi-disciplinary faculty of the Department of Ophthalmology, National University Health System, Singapore. The authors constantly asked themselves 'how much is too much' and deliberately attempted to weed out any 'excess' for the benefit of the target readers. The content is written in a point format with lucid language.Emphasis has been focused on information that constitutes essential ophthalmic 'core conditions and problems' of the current medical undergraduate curriculum. Every section in the book has 'learning objectives' and a 'take home message' to facilitate quick learning. The book embraces a practical guide to the study of ocular diseases, basic methods of investigations and treatment where applicable.

Physicians of all disciplines know (or quickly learn the hard way) that effective and compassionate communication is arguably the single most important determinant of patient satisfaction. For cataract surgeons, the words said before, after, and even during the operation are often more important to the patient's happiness than the objective quality of the surgical result. What I Say: Conversations that Improve the Physician-Patient Relationship is designed to help cataract surgeons to hone their verbal interactions to be as sharp as their surgical skills. Muddled, clumsy, or impromptu explanations diminish the doctor-patient relationship and could prevent patients from receiving the surgery they need or appreciating the results they get. Knowing in advance which words to use in difficult situations is analogous to knowing how to manage a complication before it occurs. The results are inevitably better when a physician has considered every possible outcome instead of attempting to come up with exactly the right solution on the spot. Rather than figure out the right words by trial and error, however, What I Say has recommendations on exactly what to say to build strong and trusting patient relationships. Drs. Robert Osher and Jack Parker have compiled conversational scripts from Dr. Osher's 40-year career in ophthalmology, as well as contributions from over a dozen international mavens of bedside manner into a strategy guide through even the most difficult patient conversations that inevitably surround cataract surgery. Topics include: Lowering Expectations for Spectacle-Free Vision The Torn Posterior Capsule Postoperative Refractive Surprise The Dropped Nucleus The Unhappy Patient Despite a Good Result Containing examples of conversations with cataract surgery patients where informing and reassuring take top priority, What I Say: Conversations that Improve the Physician-Patient Relationship was created to aid cataract surgeons in their pre-operative, intra-operative, and post-operative interactions with patients. With the advice contained inside, surgeons will be able to motivate patients, calibrate expectations, and diffuse frustrations in every possible scenario.

Transactions of the Seventh Annual Meeting of the European Club for Ophtalmic Fine Structure in Ystad, Sweden, April 20 and 21, 1979

The International Council of Ophthalmology agreed to the creation of an International Glaucoma Committee, which should have a limited number of members, 40 at a maximum. This committee will hold a closed meeting every 4 years on the occasion of the International Congress of Ophthalmology and will report to the International Council on the practical and clinical advances in glaucoma detection and treatment. This report will be published in the proceedings of the International Congress. The committee will advise and direct the activities of the International Glaucoma Society, which will hold a glaucoma symposion prior to each International Congress of Oph thalmology and which will be open to anyone interested in glaucoma. This is now the first meeting of the committee. W hen I look at the program and the names of the speakers, I am convinced that it will be very fruitful. This is my most sincere wish. I should like to thank very warmly Prof. Leydhecker for preparing the organization of this group and the scientific program and Prof. Mishima, Prof. Kitazawa, and all of their staff for having so beautifully organized this symposion, which will be very successful, and for having received us with such generous hospitality. I am very grateful to each of the members of the International Glaucoma Committee and to each of our Japanese friends involved in this symposion."

ERIK L. GREVE The 3rd International Visual Field Symposium was held on the 4th till the 6th of May 1978 in Tokyo for the members and guests of the International Perimetric Society. The Proceedings of this symposium follow the general lines of the pro gramme with some minor alterations. This symposium was a so-called topic-symposium where selected topics were introduced by experts in the field. These topics were: Neuro-ophtha mo ogy. 1. Funduscopic correlates of visual field defects. 2. Visual field defects due to tumors of the sellar region. Glaucoma. 1. The earliest visual field defects in glaucoma. 2. The reversibility of glaucomatous visual field defects. Methodology. 1. Automation. 2. The relation between the position of a lesion in the fundus and in the visual field. Apart from the introductory papers, free papers were given on the topics non-topic free papers. and also some Much attention has been given to the discussion. Most of the discussion remarks in this Proceedings are the original taped remarks of the discussion speakers. We have choosen this form of presentation to take to the reader the athmosphere of the discussion and to preserve originality. The chairman of the sessions have presented a summary or even better an interpretation of the trends in their topics. This introduction gives a short overview of the main themes of the symposium."

Transactions of the Sixth Annual Meeting of the European Club for Ophtalmic Fine Structure in Paris, France, March 31 and April 1, 1978

The study of ocular fine structure under physiologic and experimental conditions is a relatively young branch of ophthalmic research, requiring a high degree of specialization. The few scientists, who are involved in this kind of research are widely scattered through out Europe. Therefore, the exchange of scientific information, which is necessary for crit ical evaluation and continuing stimulation of individual work, is often impeded. In an at tempt to overcome this problem, a group of likeminded research workers got together in Essen in spring 1972 and founded ECOFS, the European Club for Ophthalmic Fine Struc ture. Since its inauguration the Club has attracted the interest of more and more scientists engaged in the electron microscopic investigation of the eye. Once each year the members of the association and invited guests take part in a very active scientific meeting. During these workshops the participants have ample oppurtunity to report in detail on the recent results obtained in their investigations and to test the validity of their conclusions in lively discussions with other specialists. This publication contains a great number of the papers presented at the fifth annual meeting of ECOFS in Zurich, Switzerland, on March 25 and 26, 1977. This inventory of current research in ophthalmic electron microscopy may serve to inform both scien tifically orientated ophthalmologists and other investigators working in related fields of research.

XIIIth ISCERG Symposium, Kibbutz Ginossar, Israel, 21-25 April, 1975

Practical Guide to VIVA and OSCE in Ophthalmology Examinations is an essential study guide presented in a direct, exam-style question-and-answer format. It combines detailed explanations with high quality clinical photographs tailor-made to help readers ace specialist oral examinations (MMed, MRCS, FRCS, FRCOphth, FAMS, FRANZCO).Co-authored by ophthalmology trainees who took the final MMed and FRCOphth (Oral) in 2016 and 2017, this is a book written by trainees, for trainees, with prominent author contribution by Prof Wong Tien Yin. This book provides invaluable guidance to readers in presenting their answers in a logical, succinct and elegant manner.Practical Guide to VIVA and OSCE in Ophthalmology Examinations aims to complement the book titled The Ophthalmology Examinations Review by Prof Tien Yin Wong to guide candidates onto the path of success in examinations. This book illustrates the answering techniques employed during examinations, utilizing clinical photographs accompanied by a full template answer script of various high yield conditions. The style and format has been intentionally designed to simulate examination conditions and to provide candidates with ample practice in preparation for the examination.Most major ophthalmic degrees require trainees to take and pass an oral ophthalmic exam. This book fills a significant void in the market for ophthalmic training, where texts combining clinical photos and actual exam answering techniques are severely lacking. Readers will be able to follow the answering techniques and examples provided within the book so as to better cope with the clinical exams.

Strychnine and picrotoxin were tested as possible antagonists of two puta- tive inhibitory transmitters in the retina: taurine and GABA, Strychnine was shown to antagonize the depressive action of taurine on the ERG b-wave, but it did not affect the depressive action of GABA. Conversely, picrotoxin had no effect on the depressive action of taurine on the ERG b-wave, but it antagonizes to some extent the depressive effect of GABA. These data, as well as those obtained through recording tectal evoked responses, lead to the conclusion that taurine and GABA do not act in the same way in retinal inhibitory synaptic transmission. REFERENCES CURTIS, D.R., AW. DUGGAN & G.A.R. JOflNSTON. Glycine, strychnine, picro- toxine and spinal inhibition. Brain Res. 14, 759-762 (1969). CURTIS, D.R., L. HOSLI & G.AR. JOHNSTON. A pharmacological study of the depression of spinal neurones by glycine and related aminoacids. Exp. Brain Res. 6, 1-18 (1968 a). CURTIS, D.R., L.HOSLI, G.A.R. JOHNSTON & LH. JOHNSTON. The hyperpolariza- tion of spinal motoneurones by glycine and related aminoacids. Exp. Brain Res. 5, 235-258 (1968 b). CURTIS, D.R. & A.K. TEBECIS. Bicuculline and thalamic inhibition. Exp. Brain Res. 16,210-218 (1972). DA VIDSON, N. & H. REISINE. Presynaptic inhibition in cuneate blocked by GABA antagonists. Nature New Biology 234,223-224 (1971).

This volume contains the papers presented at the International Symposium on Fluorescein Angiography held in Ghent, from 28 march to 1 april 1976, under the presidency of Prof. J. Fran90is. The book has been divided in several chapters corresponding to the sessions of the meeting. The same order has been followed as for the pre sentation of the papers. The discussions, however, immediately follow the papers concerned. During the meeting complications of fluorescein angio graphy have been discussed; this part will be presented as a separate chapter at the end of the volume. I wish to express my gratitude to all who contributed to this volume and to all the participants of ISF A-Ghent. I acknowledge also the cooperation of the publishers Dr. W. Junk, B.V. J.J. De Laey, M.D. XI EDITORIAL We must be respectfully grateful to Her Majesty the Queen, who very kindly extended her high patronage to the International Symposium on Fluorescein Angiography."

Basic refraction is a foundational part of ophthalmology, and yet beginning ophthalmology residents and ophthalmic technicians are often left on their own to learn the finer points. Despite being core skills, the techniques and practical aspects of subjective refraction and prescribing glasses are often developed by trial and error, if they are developed at all. Subjective Refraction and Prescribing Glasses: The Number One (or Number Two) Guide to Practical Techniques and Principles, Third Edition is designed as a complete guide to those essential skills, offering everything from basic terminology to tips, tricks, and best practices. This updated Third Edition has been expanded in every section with thoughtful, practical advice, and has case scenarios, in a question and answer format, of situations encountered with real-world patients. It is the most comprehensive review of clinical subjective refraction to date. Drs. Richard Kolker and Andrew Kolker together have nearly 50 years of experience in the practice of ophthalmology and bring both the fresh eyes of a beginning ophthalmologist and the experience of a seasoned veteran to this Third Edition. While new residents and technicians will appreciate the thorough explanation of refractive fundamentals, even expert ophthalmologists will appreciate the practical tips that may have never occurred to them. Included are: Very clear, easy-to-read, practical explanations of the subjective refraction process Basic practical optics to explain the steps of subjective refraction The Jackson Cross Cylinder made easy to understand and use Plus and mInus cylinder methods discussed separately and color coded for quick identification An Appendix with a primer on retinoscopy and how to use the manual lensometer The art of subjective refraction and prescribing glasses Subjective Refraction and Prescribing Glasses: The Number One (or Number Two) Guide to Practical Techniques and Principles, Third Edition is the definitive guide to the often neglected skills involved in clinical subjective refraction. Residents and technicians will find it a critical guide in their learning process, but even seasoned ophthalmologists can benefit from the tips and tricks enclosed within.