The purpose of this report is to describe a case of agenesis of the medial rectus muscle which was corrected by transplantation of muscle slips from the vertical recti. Relatively few cases of agenesis of the extraocular muscles have been reported. Three cases of absence of the lateral rectus, three cases of absence of the medial rectus, two cases of absence of the superior rectus, four cases of absence of the inferior rectus, two cases of absence of both the inferior and superior recti, one case of absence of both obliques, and one case of absence of both superior obliques are cited by Duke-Elder (1949).1
Report of Case
A female girl, was first examined at the age of 2 months. At that time, the corneal reflex test elicited a right exotropia of approximately 50Δ. She would not follow a light. Her family and birth history revealed that she was
GIRARD LJ, NEELY RA. Agenesis of the Medial Rectus Muscle: Correction of a Case by Transplantation of Slips from the Vertical Recti. AMA Arch Ophthalmol. 1958;59(3):337–341. doi:10.1001/archopht.1958.00940040043004
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