Clinical Research Directory

Inclusion Criteria: * Healthy volunteers * Subjects aged over 18 / under 60 * Male or female * Subjects fasting from coffee, tea, Coca-Cola and others stimulants * Sufficient understanding and cooperation to comply with the study requirements * Agreed to provide written consent * Affiliated to the social security * Subjects with visual impairment (congenital or acquired) * Subjects with no visual impairment (healthy group) Exclusion Criteria: * Subjects under 18 years old * Administrative and legal criteria (tutorship, curatorship, without social security, in exclusion period of another study)