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Terrorist attacks the 13th of November 2015 in Paris, have greatly moved and shocked people. In order to understand the psychological and neurobiological consequences of trauma, the 13-November program was launched. In this context, our study focuses on the social cognition abilities of participants having been directly exposed to these events. Several works show an impairment in some social skills in post-traumatic stress disorder (PTSD), that may be associated with an abnormal processing of emotions. For instance, a bias toward negativity has been shown, as well as emotion recognition difficulties. Although, evidence in the literature on anxiety disorders seem to highlight the importance of the eye area in these deficits, the interaction between gaze perception and emotional processing in PTSD remains largely unknown. To better understand the scope of this interaction, 159 participants, including 52 exposed to Paris terrorist attacks who developed a PTSD, 51 exposed to the same trauma without a PTSD, and 56 unexposed controls, participated in one study involving the recording of eye movements during a gaze-cueing attentional task using emotional faces. In this study, participants were asked to detect the location of a target correctly or incorrectly cued by the gaze of a face communicating sadness, happiness, or a neutral expression. In this poster, we will present and discuss eye movement data, which highlight how the processing of emotional faces is impaired in the PTSD and the importance of gaze detection in their deficits. [ABSTRACT FROM AUTHOR]