A manual and atlas of medical ophthalmoscopy.

  • Gowers, W. R. (William Richard), 1845-1915.
Date:
1890
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Licence: Public Domain Mark

Credit: A manual and atlas of medical ophthalmoscopy. Source: Wellcome Collection.

Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)

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    MEDICAL OPHTHALMOSCOPY. C INTRODUCTION. The ophtlialmoscope is of use to the physician because it gives information, often not otherwise obtainable, regarding the existence or nature of disease elsewhere than in the eye. This information depends upon the circumstance that we have under observation—1. The termination of an artery and the commencement of a vein, with the blood circulating in each. 2. The termination of a nerve, which, from its close prox- imity to the brain, and from other circumstances, under- goes significant changes in various diseases of the brain, and in affections of other parts of the nervous system. 3. A nervous structime—the retina, and a vascular structure—the choroid—which also suffer in a peculiar way in many general diseases. For the efficient use of the oi^hthalmoscope in medical practice, the student must be familiar with tlie use of the instrument; he must also be familiar with the normal fundus oculi, with the changes in its appealance (congenital and other) that are of no significance, and also with those that are ocular in origin, such as posterior staphyloma, glaucomatous excavation, and the like. An acquaintance with these must be gained from the ophthalmic simgeon before inferences can safely he drawn regarding the signifi- cance of other alterations met with in various diseases. The following pages assume the possession of a general knowledge of the use of the instrument, but a few words B