DefinitionExtraocular muscle function testing is an examination of the function of the eye muscles. A doctor observes the movement of the eyes in six specific directions.Alternative NamesEOM; Extraocular movement; Ocular motility examinationHow the test is performedYou are asked to sit or stand with your head erect and a forward gaze. Your health care provider will hold a pen or other object 12 inches in front of your face. He or she will then move the object in several directions and ask you to follow it with your eyes, without moving your head.How to prepare for the testNo special preparation is necessary for this test.How the test will feelThe test involves only normal movement of the eyes.Why the test is performedThis test is performed to evaluate any weakness or other problem in the e