Topographical aspects of the insertions of the extraocular muscles.

In 581 strabismus operations, the distances between the limbus and the scleral insertions of the rectus muscles were measured, as well as the distances between the anterior end of the insertions of the superior and the inferior obliques and the temporal end of the insertion of the superior rectus and the inferior end of the one of the lateral rectus, respectively. In the case of the rectus muscles, smaller values than the classical ones were found. With the obliques, the measurements were similar to those of Fink. The differences with age or refraction were not statistically significant. We concluded that these parameters are not important in the determination of the amount of recession of an extraocular muscle in strabismus operations in patients over the age of six months.