Variations in the normal electro-oculogram.
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منابع مشابه
Variations in the normal electro-oculogram.
THE existence of an electrical potential in the vertebrate eye, with the cornea positive to the fundus, was demonstrated over a century ago (Du Bois-Reymond, 1849). This potential, the standing or corneo-fundal potential, is often described as a steady potential to distinguish it from the rapidly oscillating potential of the electroretinogram. It is not, however, a truly steady potential, but i...
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An electro-oculogram ratio of less than one was found to be caused by limited ocular excursions under photopic conditions in a patient with a rod-cone dystrophy. Because this inverse electro-oculogram ratio was not caused by a decrease in standing potential under photopic conditions, it should be considered an artefact.
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Thirteen patients with retinal detachment and surgical reattachment were studied with preoperative and multiple postoperative electro-oculograms. The light rise was reduced to a mean of 1.17 with detachment but recovered in 77% to a 1.87 ratio, the equivalent of the control eye. This recovery was complete within 66 days in 80% of patients who eventually did return to normal. This rapid recovery...
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THE eyeball may be regarded as a small battery, with a positive pole in the cornea and a negative pole in the retina. The work of Fenn and Hursh (1937), Frangois, Verriest, and de Rouck (1957), and others, suggests that the corneo-retinal potential is associated primarily with the retinal receptors; Brindley (1956) has suggested that the resting potential of the lens may contribute to it, and i...
متن کاملThe electroretinogram and electro-oculogram: clinical applications.
Routine examinations with an electroreiinogram (ERG) were performed on a large number of patients. The results are discussed in those areas where the ERG aided in diagnosis, contributed to the understanding of a disease, or assisted in following the course of a disease. The electro-oculogram (EOG) as an adjunct to the ERG is also discussed. Mention is made of the few diseases which may be detec...
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ژورنال
عنوان ژورنال: British Journal of Ophthalmology
سال: 1967
ISSN: 0007-1161
DOI: 10.1136/bjo.51.1.44