Diagnosis of a current unipolar depressive episode according to DSM-V criteria
Prescription of antidepressant treatment - SSRI or alpha-2 antagonist - by the psychiatrist or referring physician for the current depressive episode
Age 18 or more
Affiliation with a welfare scheme and native French speakers
Complete information on the study received and written informed consent signed
You may not be if
Diagnosis of a progressive psychiatric disorder (except MDD and anxiety disorder) according to DSM-V criteria
Seasonal character of the depression
Current antidepressant treatment
Recommended antidepressant treatment other than SSRI or alpha-2 antagonist
High suicide risk
Retinal or ophtalmologic pathology affecting visual acuity as assessed by the Monoyer scale.
History of head trauma, epilepsy or other neurological disorders
Participation in another interventional study (including exclusion period)
Intellectual disability leading to difficulty participating or impossibility or inability to understand the information provided on the study.
Persons cited in Articles L. 1121-5 to L. 1121-8 of the French Public Health Code: pregnant women, parturient or breastfeeding mothers, persons deprived of their liberty by a judicial or administrative decision, persons under psychiatric care under duress, persons admitted to a health or social establishment for other goals than research, minors, adults subject to a legal protection, adults who are unable to express their consent and who are not subject to a legal protection measure.
Criteria incompatible with the use of the ERG device: open wound in an area covered or enveloped by the device; implantable medical device (e.g. pacemaker); user at high risk of contagion
