How Traumatic Experiences Can Leave Their Mark on a Person’s Eyes

From Neuroscience News: For More Info, Go Here…

Patients with PTSD not only showed an exaggerated response to threatening stimuli but also to stimuli that depicted positive images.

Summary: Pupillary response in those with PTSD differs from people who have not experienced traumatic events. The pupils of those with PTSD failed to show sharp constriction caused by light changes, and more enlargement when exposed to emotional stimuli that other participants. Patients with PTSD not only showed an exaggerated response to threatening stimuli but also to stimuli that depicted positive images.

“This shows that the hyper-response of the pupil is in response to any arousing stimulus, and not just threatening ones. This may allow us to use these positive pictures in therapy, rather than relying upon negative images, that can be quite upsetting to the patient, and therefore make therapy more acceptable and bearable. This idea now needs testing empirically before it is put into clinical practice.”

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