The Clinical Application of Passive Ductions and Generated Muscle Force Testing

Abstract

Strabismus with limited ductions in one or both eyes can be evaluated with differential intraocular pressure testing combined with passive ductions. In cases where intraocular pressure rises in the face of restricted movement, freeing mechanical restrictions is of first priority. On the other hand, when no change in intraocular pressure occurs in the field of restriction, an eye muscle transfer is the procedure of choice. Differential intraocular pressure testing is non-invasive, painless, repeatable, and can be done in patients who would be uncooperative for the usual tests for generated muscle force.