Exposure therapy needs repeated or prolonged exposure for habituation, which is a different mechanism from EMDR.

EMDR Eye Movement Desensitization and Reprocessing: a trauma therapy in which the patient recalls a memory while moving their eyes from side to side. Recommended as a first-line PTSD treatment; whether the eye movements themselves do anything is still argued about.

Psychotherapy Treatment by conversation between a therapist and a patient, and the arguments about what in it actually does the work.