Anomalies of the ocular muscles. Fourth paper. [VII. An examination of Von Graefe's doctrine of 'antipathy to single vision'] / by George T. Stevens.
- George Thomas Stevens
- Date:
- 1891
Licence: Public Domain Mark
Credit: Anomalies of the ocular muscles. Fourth paper. [VII. An examination of Von Graefe's doctrine of 'antipathy to single vision'] / by George T. Stevens. Source: Wellcome Collection.
Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.
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![t / ; M ' ■ ANOMALIES OF THE OCULAR MUSCLES. [fourth PAPER.] By Dr. GEORGE T. STEVENS, New York. VII. AN EXAMINATION OF VON GRAEFE’S DOCTRINE OF “ ANTIPATHY TO SINGLE VISION.” ’ IN Von Graefe’s classical description of the condition to which he applies the term “ Antipathy to Single Vision,” he says: “ It has sometimes happened to me that after squint operations with apparently correctly adjusted visual axes there have resulted double images only slightly removed from each other. The visual power of each eye has been quite good, alternating strabismus having pre- viously existed, and the accommodative power has been similar in the two eyes. Nevertheless it has been in no way possible to bring about single vision.” * He states that this condition of double seeing persists notwithstanding the interposition of prisms in various positions, and that every effort of the patient to unite the images results only in removing them to still greater distances. He adds : “ The tendency appears to be a direct physiologi- cal contradiction; for while in sound eyes some approach, especially in case of large retinal pictures, is sufficient to induce arbitrary muscular contraction in the interest of single vision, in these cases, on the other hand, it is found that * Read at the meeting of the American Medical Association, May, 1891. ® Arch, fiir Ophthalmologic, i., i, 117.](https://iiif.wellcomecollection.org/image/b22445407_0005.jp2/full/800%2C/0/default.jpg)
