There is no normal range for an eye position examination, which is primarily used to assess the degree of coordination of the extraocular muscles. The eye position examination involves covering one eye and then carefully observing the direction of movement of the other eye. If the covered eye moves from outward to inward, exotropia or exotropia may be present; if it moves from inward to outward, endotropia or endocryptopia may be present. Since this examination is primarily used to assess the degree of coordination of the extraocular muscles and the presence of hyper or hypokinesis of the eye. It is mostly used clinically to rule out common and non-common strabismus, and it can also be used for preoperative measurement to observe comparisons with intraoperative and postoperative periods and to avoid under- or over-correction of eye position due to surgery. Typically, eye position examinations require cooperation and concentration with the surgeon. If the person performing the examination has a severely damaged eye, or is even immobile, he or she is not suitable for this examination.