Current virtual reality device makes motion sickness and visual fatigue having limitation for recreation and other clinical approaches. Still there is no standardized quantification of motion sickness and visual fatigue measurement with objective approach. Current biofeedback accompanied with virtual reality would be promising tool for stress relief.

Current virtual reality device makes motion sickness and visual fatigue having limitation for recreation and other clinical approaches. Still there is no standardized quantification of motion sickness and visual fatigue measurement with objective approach. After quantification and improvement with these shortcomings, current biofeedback accompanied with virtual reality would be promising tool for stress relief. This research aims to measure objective motion sickness and visual fatigue with psychological stress in highly stressed group, and to compare between stress relief with existing biofeedback only approach and relief with mixed biofeedback and virtual reality relaxation.

Inclusion Criteria:

• scored at least 20 on the PSS-10 (Perceived Stress Scale 10) to verify highly psychological stressed participants at the baseline visits.

Exclusion Criteria:

• the existence of a current Major depressive disorder or panic disorder, psychotic disorder (e.g., schizophrenia or delusional disorder), bipolar affective disorder,active alcohol or drug use disorder, neurological illness including significant cognitive impairment or Parkinson's disease, mental retardation, significant medical conditions, epilepsy, histories of alcohol or drug dependence, personality disorders, or brain damages during the screening and baseline visits, per the Mini-International Neuropsychiatric Interview (Sheehan et al., 1998) according to the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5)
• the existence of active disease in both orbital parts