Background: Esotropia during opiate withdrawal is a new clinical syndrome that has only recently been reported in the literature.
Methods: Clinical case series.
Results: Five patients with acute esotropia during opiate withdrawal are presented. In four there was evidence of underlying hyperopia and/or other strabismogenic features.
Conclusions: The precise cause of esotropia with heroin withdrawal is uncertain. Most (and possibly all) of these patients have one or more objective strabismogenic features, and these are probably a large factor in the causation.