Download or read book Single and Multiple Stimulus Static Perimetry in Glaucoma The Two Phases of Perimetry written by E.L. Greve and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: does not vary more than 1 % over the whole surface. Stimulus: The luminance of the stimuli can be regulated by means of neutral density filters. These filters are neither entirely neutral nor completely uniform, but these variations are not significant for perimetry. The maximum luminance of the stimuli is standardized at 1000 asb (316 2 cd.m-). The standard GP for kinetic perimetry has 3 neutral density filters which reduce the luminance by 0.5, 1.0 and 1.5 log units respectively. The modification of the GP for static perimetry is supplied with an additional series of four neutral density filters, which allow luminance steps of 0.1, 0.2, 0.3 and 0.4 log units. The resulting luminance values, expressed in apostilb, are given in Table I. TABLE I Luminance values of the Goldmann perimeter 4 3 2 steps lux 1430 450 143 45 3,1 asb 1000 315 100 31,5 3,1 2 cd/m 315 100 31,5 10 3,1 ßL ±30 10 3 3,1 L log L asb 3 2,5 2 2 1,5 0,5 2 Background: 31,5 asb. = 10 cd/m • Coefficient of reflection 0,7. 1 2 (1 asb = -cd/m).

Download or read book Single and Multiple Stimulus Static Perimetry in Glaucoma written by E. L. Greve and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Second International Visual Field Symposium T bingen 19 22 September 1976 written by E.L. Greve and published by Springer Science & Business Media. This book was released on 1977-06-30 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Resolving Dilemmas in Perimetry written by Sagarika Patyal and published by Springer Nature. This book was released on 2021-07-22 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers interpretation of visual fields by Humphrey and Octopus perimeters and discussion of Humphrey visual fields in a variety of ocular disorders.It examines dilemmas faced by an ophthalmologist while evaluating visual fields which do not match with the clinical picture. Glaucoma, the commonest condition for visual field investigation is discussed in detail. Logical reasoningfor incorporating perimetry in glaucoma management with a clear understanding of the challenges in its interpretation is delved into. The book progresses to advanced glaucoma and glaucoma progression. It discusses a systematic evaluation of various parts of the visual field so that the reader can make a calculated management plan for their patient. Each chapter attempts to clearly enunciate factors that help in the diagnosis and features which may be confused with other conditions. Fields which help diagnosing early, advanced glaucoma and glaucoma progression with images and methods of ensuring reasonable diagnostic accuracy are included. The book incorporates separate chapters on ocular conditions which also mimic visual field defects of glaucoma with detailed modes of correct diagnosis, diagnostic dilemmas arising from retinal, macular, vascular, visual pathway lesions mimicking visual field defects of glaucoma or while coexisting with glaucoma, supported by algorithms to achieve a quick diagnosis in a busy OPD without missing the clinical findings and by using minimal investigative modalities. This book helps clinicians to prevent over diagnosis or under diagnosis of glaucoma and helps diagnose cases with morbidities causing visual field defects.

Download or read book Glaucoma Symposium of the Netherlands Ophthalmological Society written by E.L. Greve and published by Springer Science & Business Media. This book was released on 1980-05-31 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Visual Fields via the Visual Pathway written by Fiona Rowe and published by CRC Press. This book was released on 2016-01-06 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Visual Fields via the Visual Pathway presents the varying visual field deficits occurring with lesions of the visual pathway. The book covers anatomy, pathology and signs and symptoms, plus visual field defects associated with specific parts of the visual pathway. Also covered is the basic theory of visual field assessment. This new edition includes updated methods of visual field assessment, additional descriptions of how individual visual field results should be interpreted, an updated review of the pros and cons of the various available test programs, and recent research advances and recommendations on baseline assessment, diagnosis, and re-assessment options to promote good clinical practice decisions. The book expands on the previous edition to consider further types of perimetry and also updates existing perimetry information. The Octopus 900 perimetry, introduced since the first edition, features alongside Goldmann and Humphrey perimeters. Artefacts of testing are discussed as well as their identification versus actual visual field deficit. A section on differential diagnosis is also included. Chapters include numerous illustrations of visual field results, colour plates of associated fundus images, and neuroimaging scans. References and further reading lists are also provided with key articles and up-to-date literature.

Download or read book The History of Glaucoma written by C.T. Leffler and published by Wayenborgh Publishing. This book was released on 2020-04-17 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt: The History of Glaucoma, the latest in the Hirschberg series of the history of ophthalmology, covers the twists, turns, and paradigm-shifts in the glaucoma concept over the past two millennia. Previously, scholars were not able to agree on how the term glaucoma, which related in antiquity to the color of a diseased eye, ended up describing an excavated optic neuropathy which has nothing to do with color. The volume begins in the ancient world, and proceeds all the way to the modern era of optical coherence tomography, minimally invasive surgery, and anti-VEGF agents. Ophthalmic historians and glaucoma specialists from the United States, Europe, Asia, and Latin America have contributed their scholarship and recollections to this volume, which includes photographs from private collections, information from unpublished documents, and new translations from Latin, Arabic, French, German, and Spanish. The work of masters such as Julius Hirschberg and Max Meyerhof is supplemented by the latest scholarship, which has benefited from the explosion in digitally-accessible historical documents. This new scholarship has upended many deeply rooted beliefs about ophthalmology history. Most important, the volume relates the personal stories of eye surgeons and patients, to bring the past to life. The History of Glaucoma is a must-have for anyone interested in medical history.

Download or read book Fourth International Visual Field Symposium Bristol April 13 16 1980 written by E.L. Greve and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 4th International Visual Field Symposium of the International Perimetric Society, was held on the 13-16 April 1980 in Bristol, England,at the occasion of the 6th Congress of the European Society of Ophthalmology. The main themes of the symposium were comparison of classical perimetry with visual evoked response, comparison of classical perimetry with special psychophysi cal methods, and optic nerve pathology. Understandably many papers dealt with computer assisted perimetry. This rapidly developing subgroup of peri metry may radically change the future of our method of examination. New instruments were introduced, new and exciting software was proposed and the results of comparative investigations reported. There have been many confusing statements in the literature on the relative value of perimetry and the registration of visual evoked responses. Several reports attempted to bring some clarity in this issue. There is reason for further comparative research. A number of papers dealt with special psychophysical methods, i.e. methods not using the simply monocular differential threshold. The old critical fusion frequency received new attention. Fundusperimetry was used for testing spatial summation. Acuity perimetry, binocular perimetry etc. showed that there exist many possibilities for examining visual function. At present it is not clear to us what exactly the place of these methods is in our diagnostic armament. However it is quite clear that some of them are promising and may lead to a further differentiation of perimetric methods.

Download or read book Visual Fields written by Robert Cubbidge and published by Elsevier Health Sciences. This book was released on 2005-01-01 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eye Essentials is a new series of texts which provides authoritative and accessible information for all eye care professionals, whether in training or in practice. Each pocket guide is both a rapid review tool for students and a handy clinical reference guide for practitioners. With features such as tables, key bullet points, clinical pearls, practice pitfalls, summaries, action icons and stunning full color illustrations, this series has rapidly established itself as an excellent source of essential information for today's readers. Practical guidance that is evidence basedFull-color illustrations clarify key informationHighlighted advice sections for patients and handy tables throughoutAuthoritative guidance on visual fields from a respected leader in the fieldProvides essential information in one convenient review source

Download or read book Fifth International Visual Field Symposium written by E.L. Greve and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 5th International Visual Field Symposium of the International Peri metric Society was held on October 20-23, 1982, in Sacramento, California, before the joint meeting of the International Congress of Ophthalmology and the American Academy of Ophthalmology. A majority of the members of the International Perimetric Society took part in the meeting together with many guests. The topics of the symposium were: glaucoma: correlation between the visual field and the optic disc; the visual field in low-tension glaucoma; neuro-ophthalmology and ergo-perimetry. Apart from this there were many papers on automated perimetry and general topics. The papers concerning the correlation of optic disc and visual field dealt with several aspects: peripapillary atrophy, defects in the retinal nerve fiber layer, fluorescein angiography and the characteristics of the glaucomatous excavation itself. New and interesting findings were presented showing that the careful, detailed observation of the disc and peripapillary area is re warding. The visual fields in low-tension glaucoma were studied extensively by four groups. Various approaches to the problem have led to some differences in results, which were extensively discussed. In the general glaucoma session the visual fatigue phenomenon was dis cussed extensively; apparently conflicting results were demonstrated re garding the stability of contrast threshold measurements during one and the same test session in glaucoma. The relationship between the visual field and the performance at the working place was considered in the session on ergo-perimetry.

Download or read book Optometry Science Techniques and Clinical Management written by Mark Rosenfield and published by Elsevier Health Sciences. This book was released on 2009-06-22 with total page 569 pages. Available in PDF, EPUB and Kindle. Book excerpt: An introduction to the theory and practice of optometry in one succinct volume. From the fundamental science of vision to clinical techniques and the management of common ocular conditions, this book encompasses the essence of contemporary optometric practice. Now in full colour and featuring over 400 new illustrations, this popular text which will appeal to both students and practitioners wishing to keep up to date has been revised significantly. The new edition incorporates recent advances in technology and a complete overview of clinical procedures to improve and update everyday patient care. Contributions from well-known international experts deliver a broad perspective and understanding of current optometric practice. A useful aid for students and the newly qualified practitioner, while providing a rapid reference guide for the more experienced clinician. Comprehensive and logical coverage detailing the full spectrum of optometric practice in one volume. Succinctly covers the basics of anatomy, physiology, pharmacology, investigative techniques and clinical management of common eye conditions to provide key topics likely to be met in clinical practice. Discusses the full range of refractive correction, from spectacles and contact lenses to surgical treatment. Includes chapters on the management of special populations, including paediatric, elderly, low vision and special needs patients. Heavily illustrated throughout with key diagrams and images to support the text. Complete restructuring of contents into three sections: basic sciences, clinical techniques and patient management. Full colour throughout with over 400 illustrations. Many new chapters reflecting the changes in optometric practice and technology over the last 20 years, including new imaging and diagnostic procedures and methods of ocular treatment and refractive correction. Now includes internationally renowned authors from around the world. Details a full range of refractive and management approaches for patient care.

Download or read book Perimetry Update 1996 1997 written by Michael Wall and published by Kugler Publications. This book was released on 1997 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Third International Visual Field Symposium Tokyo May 3 6 1978 written by E.L. Greve and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Clinical Glaucoma Care written by John R. Samples and published by Springer Science & Business Media. This book was released on 2013-11-27 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: Glaucoma Clinical Care: The Essentials is a pragmatic, slimmer companion volume to the more academically focused text “The Glaucoma Book” by the same editors. This new book is a thoroughly updated manual for the day-to-day diagnosis and management of glaucoma patients by comprehensive ophthalmologists and optometric physicians. Its 33 chapters are authored by world renowned experts in clinical care and basic research, providing evidenced-based research, office examination skills, clinical pearls, and up-to-date reviews of the scientific literature on glaucoma, as wel l as extensive graphics and tables to accompany the text. Glaucoma Clinical Care: The Essentials is the one book to have and consult when confronted with a problematic glaucoma patient sitting in your exam chair as it is a thorough presentation of glaucoma medications, laser, and incisional glaucoma surgeries, complete with commentaries on advantages and disadvantages of the different therapies.

Download or read book Glaucoma Identification and Co management written by D. F. Edgar and published by Elsevier Health Sciences. This book was released on 2007-01-01 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides detailed methods of clinical examination techniques and their interpretation together with a detailed description of the histopathology, physiology and visual functional changes in glaucoma.

Download or read book Glaucoma Update IV written by G.K. Krieglstein and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: Glaucoma Society of the International Congress of Ophthalmology, Bali, March 1990

Download or read book Seventh International Visual Field Symposium Amsterdam September 1986 written by E.L. Greve and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 643 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Seventh International Visual Field Symposium organized by the Interna tional Perimetric Society was held in Amsterdam, The Netherlands, September 6-10,1986. In many respects it was an exciting and fruitful meeting. The number of participants was greater than ever. The number of papers was too great to accommodate all of them. The quality of the papers reflects the continuously rising interest in perimetry in general and in automated perimetry in particular. Last but not least the social programme was organized in the, by now, almost classical friendly, enjoyable and humouristic style of the International Perimetric Society. This created an atmosphere of openness and free exchange of informa tion whICh was clearly also felt in the scientific sessions. The scientific part was divided in seven sessions with 44 spoken papers and a separate postersession during which the 46 posters were discussed. The major themes of the meeting were 'The influence of media-disturbances on the visual field' and 'Advances in perimetry in glaucoma with special emphasis on pro gression'. The session on 'media' provided interesting information on how the visual field was effected by preretinal filters. The authors either studied the influence of lens or corneal opacities or simulated opacities by special filters placed in front of the eye. In two papers the effect of cataract was qualified by photography or stray light measurements.