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Das Elektrookulogram
1000
AMERICAN JOURNAL OF OPHTHALMOLOGY
JUNE, 1972
No effort is made to minimize the limita tions of available techniques or to underesti mate the difficulties encountered in evaluat ing the results of therapy ; the results of the various forms of treatment in the hands of this experienced group are fairly displayed. The authors are to be congratulated on a lu cid presentation of a complex subject. Desmond Archer
author states explicitly that the ocular myop athies will not be discussed, since in his ex perience only few ophthalmologists have suc ceeded in placing the small electrodes with sufficient constancy to permit an unobjec tionable evaluation of the high-frequency, low-amplitude action potentials (pp. 35 and 36). Hermann M. Burian
HANDBOOK OF ORTHOPTIC PRINCIPLES,
DAS ELEKTROOKULOGRAM. By Han
2nd
ed. By G. T. Willoughby Cashell and Isa bel M. Durran. Baltimore, William & Wilkins, 1971. Paperback, 136 pages, Ta ble of contents, index, 34 black and white figures. $7.75 The second edition of this little introduc tion to motility is a delight to see. It has packed in a very few pages a tremendous amount of information that is easy to digest. The trend in medical education is toward programmed texts, but a comprehensive syn opsis such as this handbook seems much easier to read and may indeed be more in structive. There is perhaps an excessive emphasis on orthoptic treatment. I doubt if many in this country would agree with the authors that orthoptic exercises have any effect on the ac commodative convergence/accommodation ratio. Nonetheless, chapter seven on the in vestigation of squint is superb and the book can be heartily recommended to beginning orthoptic students and ophthalmology resi dents. J. Terry Ernest DIE
KLINISCHE
ELEKTROMYAGRAPHIE
IN
DER DIFFERENTIALDIAGNOSE VON NEURO MYOPATHIEN. By Karl-Heinz Puff. Berlin, Springer-Verlag, 1971. Clothbound, 84 pages, table of contents, index, 12 black and white figures. $13.90.
—UND
This brief monograph is addressed exclu sively to the neurologist. It contains nothing of direct concern to the ophthalmologist. The
Gliem.
Leipzig, Georg Thieme, 1971. Paperback, 106 pages, table of contents, index, 27 black and white figures. 35 M This is a thorough study on the clinical use of electro-oculography. After a historical and theoretical review, the author discusses his methods of recording and scoring the electro-oculogram. One chapter is devoted to the physiologic properties of the light-in duced reactions of the standing potential. Following this, he describes many cases that he examined with electro-oculography. In order to get more information on the func tion of the different retinal layers, all the cases were examined by electroretinography as well. A variety of disorders such as hered itary chorioretinal dystrophies, retinal de tachments, chorioretinal inflammations, and circulatory disturbances were studied. Although the author does not use exactly the same scoring method as Arden (he pre fers to express the maximum potential in light adaptation and the minimum potential in dark adaptation in percentages of the corneoretinal potential after pre-adaptation), his results are consistent with those who use the Arden scoring method. It is regrettable that this book is not up to date. The last literature reviewed is from 1967 and this is rather a large gap in bibliog raphy for a monograph published in 1971. Thus the semiautomatic recording proce dures (important because of the amount of time involved in the examination) are not mentioned, while the use of the electro-ocu lography in the many different hereditary
VOL. 73, NO. 6
BOOK REVIEWS
dystrophies and drug-induced diseases is scarcely mentioned. So far there is no plausible explanation why the electro-oculography light rise is of ten decreased in acute circulatory distur bances. In respect to this, the author men tions the interesting possibility that a change in permeability caused by a metabolic deficit on the inner side of the resistance membrane could lead to an exchange of ions and subse quently to a decrease in resistance. This might explain why not only the electro-ocu lography light rise, but also the corneoretinal standing potential is often decreased in oc clusion of the central retinal artery.
1001
T h e author pleads for the routine use of electro-oculography together with electroretinography in chorioretinal diseases. W e agree that in many retinal disorders these tools, particularly when supplemented by fluorescein angiography, are of utmost impor tance if we want to have a precise diagnosis. T h i s monograph is altogether thorough and well organized in covering the basics of electro-oculography. Although not quite up to date, it will be of value for workers in the field of electro-oculography and retinal dis eases. August F . Deutman
AMERICAN JOURNAL OF OPHTHALMOLOGY
JUNE, 1972
No effort is made to minimize the limita tions of available techniques or to underesti mate the difficulties encountered in evaluat ing the results of therapy ; the results of the various forms of treatment in the hands of this experienced group are fairly displayed. The authors are to be congratulated on a lu cid presentation of a complex subject. Desmond Archer
author states explicitly that the ocular myop athies will not be discussed, since in his ex perience only few ophthalmologists have suc ceeded in placing the small electrodes with sufficient constancy to permit an unobjec tionable evaluation of the high-frequency, low-amplitude action potentials (pp. 35 and 36). Hermann M. Burian
HANDBOOK OF ORTHOPTIC PRINCIPLES,
DAS ELEKTROOKULOGRAM. By Han
2nd
ed. By G. T. Willoughby Cashell and Isa bel M. Durran. Baltimore, William & Wilkins, 1971. Paperback, 136 pages, Ta ble of contents, index, 34 black and white figures. $7.75 The second edition of this little introduc tion to motility is a delight to see. It has packed in a very few pages a tremendous amount of information that is easy to digest. The trend in medical education is toward programmed texts, but a comprehensive syn opsis such as this handbook seems much easier to read and may indeed be more in structive. There is perhaps an excessive emphasis on orthoptic treatment. I doubt if many in this country would agree with the authors that orthoptic exercises have any effect on the ac commodative convergence/accommodation ratio. Nonetheless, chapter seven on the in vestigation of squint is superb and the book can be heartily recommended to beginning orthoptic students and ophthalmology resi dents. J. Terry Ernest DIE
KLINISCHE
ELEKTROMYAGRAPHIE
IN
DER DIFFERENTIALDIAGNOSE VON NEURO MYOPATHIEN. By Karl-Heinz Puff. Berlin, Springer-Verlag, 1971. Clothbound, 84 pages, table of contents, index, 12 black and white figures. $13.90.
—UND
This brief monograph is addressed exclu sively to the neurologist. It contains nothing of direct concern to the ophthalmologist. The
Gliem.
Leipzig, Georg Thieme, 1971. Paperback, 106 pages, table of contents, index, 27 black and white figures. 35 M This is a thorough study on the clinical use of electro-oculography. After a historical and theoretical review, the author discusses his methods of recording and scoring the electro-oculogram. One chapter is devoted to the physiologic properties of the light-in duced reactions of the standing potential. Following this, he describes many cases that he examined with electro-oculography. In order to get more information on the func tion of the different retinal layers, all the cases were examined by electroretinography as well. A variety of disorders such as hered itary chorioretinal dystrophies, retinal de tachments, chorioretinal inflammations, and circulatory disturbances were studied. Although the author does not use exactly the same scoring method as Arden (he pre fers to express the maximum potential in light adaptation and the minimum potential in dark adaptation in percentages of the corneoretinal potential after pre-adaptation), his results are consistent with those who use the Arden scoring method. It is regrettable that this book is not up to date. The last literature reviewed is from 1967 and this is rather a large gap in bibliog raphy for a monograph published in 1971. Thus the semiautomatic recording proce dures (important because of the amount of time involved in the examination) are not mentioned, while the use of the electro-ocu lography in the many different hereditary
VOL. 73, NO. 6
BOOK REVIEWS
dystrophies and drug-induced diseases is scarcely mentioned. So far there is no plausible explanation why the electro-oculography light rise is of ten decreased in acute circulatory distur bances. In respect to this, the author men tions the interesting possibility that a change in permeability caused by a metabolic deficit on the inner side of the resistance membrane could lead to an exchange of ions and subse quently to a decrease in resistance. This might explain why not only the electro-ocu lography light rise, but also the corneoretinal standing potential is often decreased in oc clusion of the central retinal artery.
1001
T h e author pleads for the routine use of electro-oculography together with electroretinography in chorioretinal diseases. W e agree that in many retinal disorders these tools, particularly when supplemented by fluorescein angiography, are of utmost impor tance if we want to have a precise diagnosis. T h i s monograph is altogether thorough and well organized in covering the basics of electro-oculography. Although not quite up to date, it will be of value for workers in the field of electro-oculography and retinal dis eases. August F . Deutman