Congenital absence of the inferior rectus muscle.
OBJECTIVE
A healthy 4-year-old boy was seen because of a history of pronounced right head tilt.


METHODS
Surgical exploration demonstrated absence of the right inferior rectus muscle. Both horizontal recti muscles were transposed to the normal insertion of the inferior rectus muscle.


RESULTS
Six months postoperatively, the boy was orthophoric in the primary and reading positions.


CONCLUSIONS
Clinical findings in congenital absence of the inferior rectus may mimic those of an inferior rectus paresis. Orbital computed tomography can assist in the diagnosis.
Muñoz
M
M
Department of Ophthalmology, Bascom Palmer Eye Institute, Miami, Florida 33101, USA.
D002675:Child, Preschool; D005133:Eye Movements; D006257:Head; D006801:Humans; D008297:Male; D009801:Oculomotor Muscles / Q000002:abnormalities* / Q000601:surgery; D011187:Posture; D013285:Strabismus / Q000151:congenital* / Q000601:surgery