Check out these links for looking at "Virtual Reality" videos for treatment of war-caused PTSD in soldiers.
Virtual Reality? It sounds like old fashioned exposure therapy that teaches dissociation, not healed presence. There are non-EMDR treatments that work for trauma and don’t promote dissociation. All of them, that I know about, share EMDR’s focus on increased affect, body awareness, dual attention, and a more coherent narrative. In most of the others (AEDP, somatic experiencing, STDP) the "dual attention" is either the tracking of here-and-now body sensation and/or the intense connection/containment by the therapist.