Development of a New Device and Method to Assess the Degree of Myopia and/or Astigmatism in Myopic People

Inclusion Criteria: * Volunteers, fluent in French, willing to follow the protocol, able to read and understand the information form and give free and informed consent * Aged between 18 and 39 years at the time of study inclusion * Wear corrective glasses * With an ophthalmologist's prescription for corrective eyewear less than 3 years old * Spherical error of each meridian within the range of \[-5.00 ; -0.50 D\] * Cylindrical defect included in interval \[-4.50 ; 0.00 D\] * Corrected monocular visual acuity ≤ 0.0 logMAR for distance vision (≥10/10) * French Social Security beneficiary Exclusion Criteria: General criteria for non-inclusion: * Essilor International employee * Pregnant, or breast-feeding women (Article L1121-5) * Persons deprived of their liberty by a judicial or administrative decision and persons hospitalized without consent under Articles L. 3212-1 and L. 3213-1 who are not covered by the provisions of Article L. 1121-8 and persons admitted to a health or social establishment for purposes other than research * Adults incapable or unable to express consent (Article L1121-8) * Participant included in another ongoing study or in a period of exclusion * All categories of persons particularly protected under French law are excluded from this research (Articles L1121-5 to L1121-9 of the French Public Health Code) * Amblyopia, strabismus, nystagmus * Wearing progressive lenses The following elements are considered based on the participant's declaration : * De…