Post-Traumatic Stress Disorder (PTSD) which is defined as an anxiety disorder which is characterized by reliving a psychologically traumatic event, long after any physical danger involved has passed, through flashbacks and nightmares. They are among the most common of mental illness problems. http://Hcbrest.com/go?https://www.opticaljournal.com/post-traumatic-stress-disorder-and-dry-eyes/