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Practical Management of Eye Problems: Glaucoma, Strabismus, Visual Fields
VOL. 80, NO. 2
BOOK REVIEWS
that I believe vacuoles are a normal finding or that they are the pathway for aqueous out flow ; I merely said that their pressure or ab sence is pressure-dependent and I stand by this. JACK KAYES,
M.D.
307
book, it is of considerable help in organizing the array of terms, examination techniques, and plans of treatment, which are otherwise often difficult for students to comprehend when coming into ophthalmology. BRUCE E. SPIVEY
St. Louis, Missouri EYE MOVEMENTS, VISION AND BEHAVIOR.
BOOK REVIEWS PRACTICAL MANAGEMENT OF EYE PROB LEMS: GLAUCOMA, STRABISMUS, VISUAL FIELDS. By Frederick Hampton Roy.
Philadelphia, Lea and Febiger, 1975. Clothbound, 217 pages, table of contents, index. $10 This volume is a departure from previous ophthalmologic texts. Dr. Roy writes that it was his intent that the text "should cover the 85th percentile of common ophthalmologic problems of glaucoma, strabismus, and visual fields." He has designed the book to be used in the examination room to help outline prob lems and to decide the plans for taking care of them. The book recognizes and bases much of its outline on the problem-oriented medical record system, developed by Law rence Weed. Dr. Roy is to be highly complimented for his effort in helping to organize several com mon problem areas for the beginning resi dent. Medical students with an initial inter est in ophthalmology, but confronted with a dizzying array of new terms and techniques, are also likely to find this book of consider able help. The text is divided into symptoms and diagnosis. The symptom approach de scribes work-up and how much data to col lect. One is then referred either to the diag nostic sections or to algorithms to help clarify the specific problem. Once a diagnosis has been established, the book provides a state ment of other associated problems to evaluate a possible plan of management in specific cases. It is well referenced, and, once one be comes familiar with just how to utilize this
By Kenneth R. Gaarder. New York, Halsted Press, 1975. Clothbound, 156 pages, table of contents, index, 51 black and white figures. $14.95 This carefully written and extremely well organized book describes a visual informa tion processing model of human behavior. There are nine chapters that make several points. The visual system is a "homeostatic feedback system"; saccadic eye movements are examples of control by feedback that re sult in an abrupt change in foveal imagery causing an evoked cortical and physiologi cally important response; these brain-evoked eye jumps are correlated with "interval pac ing mechanisms" of the brain. These pacing mechanisms relate to different voltage waves recorded with gross electrodes from the hu man scalp. Thus, Gaarder speculates that the alpha rhythm (which, according to him, re lates visual input to other sensory pacing mechanisms) will have exactly half the fre quency of beta rhythms. He analyzes the sensory effects of the eye jump although glossing quickly over the essential problem of how it is that the discrete successive oculocentrically localized maps (which electrophysiology assures us is the way primary visual cortex views the world) are trans formed into the preception of stable continu ous egocentric reality in which neither eye movements themselves nor the sweep of the image across the retina thereby resulting are ever apparent. The information handled by the nervous system is arranged in a hierarchy of units. Intervals between successive saccades con stitute an eye jump package which is the es-
BOOK REVIEWS
that I believe vacuoles are a normal finding or that they are the pathway for aqueous out flow ; I merely said that their pressure or ab sence is pressure-dependent and I stand by this. JACK KAYES,
M.D.
307
book, it is of considerable help in organizing the array of terms, examination techniques, and plans of treatment, which are otherwise often difficult for students to comprehend when coming into ophthalmology. BRUCE E. SPIVEY
St. Louis, Missouri EYE MOVEMENTS, VISION AND BEHAVIOR.
BOOK REVIEWS PRACTICAL MANAGEMENT OF EYE PROB LEMS: GLAUCOMA, STRABISMUS, VISUAL FIELDS. By Frederick Hampton Roy.
Philadelphia, Lea and Febiger, 1975. Clothbound, 217 pages, table of contents, index. $10 This volume is a departure from previous ophthalmologic texts. Dr. Roy writes that it was his intent that the text "should cover the 85th percentile of common ophthalmologic problems of glaucoma, strabismus, and visual fields." He has designed the book to be used in the examination room to help outline prob lems and to decide the plans for taking care of them. The book recognizes and bases much of its outline on the problem-oriented medical record system, developed by Law rence Weed. Dr. Roy is to be highly complimented for his effort in helping to organize several com mon problem areas for the beginning resi dent. Medical students with an initial inter est in ophthalmology, but confronted with a dizzying array of new terms and techniques, are also likely to find this book of consider able help. The text is divided into symptoms and diagnosis. The symptom approach de scribes work-up and how much data to col lect. One is then referred either to the diag nostic sections or to algorithms to help clarify the specific problem. Once a diagnosis has been established, the book provides a state ment of other associated problems to evaluate a possible plan of management in specific cases. It is well referenced, and, once one be comes familiar with just how to utilize this
By Kenneth R. Gaarder. New York, Halsted Press, 1975. Clothbound, 156 pages, table of contents, index, 51 black and white figures. $14.95 This carefully written and extremely well organized book describes a visual informa tion processing model of human behavior. There are nine chapters that make several points. The visual system is a "homeostatic feedback system"; saccadic eye movements are examples of control by feedback that re sult in an abrupt change in foveal imagery causing an evoked cortical and physiologi cally important response; these brain-evoked eye jumps are correlated with "interval pac ing mechanisms" of the brain. These pacing mechanisms relate to different voltage waves recorded with gross electrodes from the hu man scalp. Thus, Gaarder speculates that the alpha rhythm (which, according to him, re lates visual input to other sensory pacing mechanisms) will have exactly half the fre quency of beta rhythms. He analyzes the sensory effects of the eye jump although glossing quickly over the essential problem of how it is that the discrete successive oculocentrically localized maps (which electrophysiology assures us is the way primary visual cortex views the world) are trans formed into the preception of stable continu ous egocentric reality in which neither eye movements themselves nor the sweep of the image across the retina thereby resulting are ever apparent. The information handled by the nervous system is arranged in a hierarchy of units. Intervals between successive saccades con stitute an eye jump package which is the es-