What is "oculogyric crisis"

Oculogyric crisis (OGC) is the name of a dystonic reaction to certain drugs or medical conditions characterized by a prolonged involuntary upward deviation of the eyes. The term "oculogyric" refers to the bilateral elevation of the visual gaze, but several other responses are associated with the crisis. Epilepsy can manifest as oculogyric seizures, also called versive seizures.Epilepsy A to Z: A Concise Encyclopedia:Second Edition

By Pierre Jallon, MD,Peter Kaplan, MB, FRCP,William Tatum, page 360