A curious case of lost and found medial rectus post trauma

Loss of an extraocular muscle following injury is rare and is most commonly reported to occur in the medial rectus muscle (MR). A completely transected and retracted MR is difficult to retrieve due to lack of intermuscular attachments. In this case report, a 5-year-old girl with presumed ‘Lost MR’ following accidental injury to her right eye underwent nasal transpositions of vertical recti during primary exploration in order to improve adduction and to increase her diplopia free field. To our surprise, the ‘Lost’ MR muscle was found intact in its original anatomical position when she underwent resurgery 2 months later to correct progressive exotropia.