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May 1977

Inferior Oblique Myectomy, Disinsertion, and Recession in Rhesus Monkeys

Author Affiliations

From the Division of Ophthalmology, Children's Memorial Hospital, and the Department of Ophthalmology, Northwestern University Medical School, Chicago.

Arch Ophthalmol. 1977;95(5):857-860. doi:10.1001/archopht.1977.04450050135017

• Twenty-one myectomies near the insertion, 22 disinsertions, and two recessions were performed. After healing was complete, each animal was sacrificed.

Anatomical dissection showed the following: (1) in every disinsertion and myectomy case, the inferior oblique muscle spontaneously reattached itself to the sclera; (2) the site of reattachment following these two procedures varied widely, ranging from the original insertion site to other areas adjacent to the lateral rectus or inferior rectus insertions; (3) disinsertion and myectomy shortened the inferior oblique muscle to two thirds its normal length, while recession shortened the muscle to one third its normal length.

(Arch Ophthalmol 95:857-860, 1977)