“…Although frequently idiopathic, acute acquired comitant esotropia can be caused by interruption of binocular vision due to prolonged monocular eye lid closure or occlusive treatment for anisometropic amblyopia, decompensation of pre‐existing esophoria or small‐angle esotropia, loss of vision in one eye secondary to injury or disease, mild to moderate uncorrected myopia in adults, accommodative spasm and intracranial pathology . The last may present with additional signs and symptoms, such as abducting nystagmus, papilloedema, headaches, unsteadiness, as well as inability to achieve fusion with corrective prisms or the synoptophore .…”