Study of Human Ocular Hemodynamics by Holography Dopple

Inclusion Criteria: Criteria common to both populations ( patients and healthy volunteers) : * Age ≥ 18 years and \< 75 years; * Having received informed information about the study and having signed a consent to participate in the study; * Affiliated or covered by social security Criteria for healthy volunteers : No ocular or systemic disease deemed to affect ocular circulation by an investigator Specific criteria for patients: * Subjects usually followed at one of the recruiting centers; * Patients with chronic glaucoma, for whom a therapeutic modification is planned in the short term; * Patients with carotid stenosis; * Patients with choroidal pathology: pachychoroidism having led to pigment epithelium anomalies. Exclusion Criteria: * For all participants: * Persons covered by articles L1121-5 to L1121-8 of the CSP (all protected persons: pregnant women, parturients, nursing mothers, persons deprived of their liberty by judicial decision or administrative decision, minors, and persons under legal protection: guardianship or curatorship); * Women of childbearing age not using an effective method of contraception, or positive pregnancy test (blood or urine); * Participants allergic to tropicamide when using pupillary dilatation; * Inability of the subject to maintain a stable sitting position for research procedures; * Temporary contraindication to HoloDoppler: * Patient suffering from viral conjunctivitis or any other infectious disease; * Patient with skin lesions on the neck or forehead, for which contact with a chin strap is not recommended. * Impossibility of making acquisitions of interest (e.g. due to a pupil diameter that is too small, advanced cataracts, nystagmus, etc.). * Wearing glasses or contact lenses to correct a refractive disorder is not considered a criterion for non-inclusion.