Evaluation of visual perception through diffractive optical lens designs by virtual implantation.

Inclusion Criteria:

• Male or female subjects between and including 18 and 50 years of age;
• Healthy eyes;
• Dominant eye with a monocular CDVA ≥1.0 decimal (≤ 0.0 logMAR) without cycloplegia;
• Subject who has been informed of the consequences and constraints of the protocol and who has given his/her written informed consent;
• Negative COVID19 screening test prior to every trial visit.

Exclusion Criteria:

• Subjects of less than 18 or more than 50 years of age;
• Monocular CDVA of dominant eye < 1.0 decimal (> 0.0 logMAR) without cycloplegia;
• Subject unable to comply with the study protocol or likely to be non-cooperative during the study;
• Subject whose freedom is impaired by administrative or legal issues, or adult persons under legal protection or unable to give an informed consent;
• Pseudophakic subjects;
• Subjects, who are unable to fixate for a longer time, e.g. strabismus, nystagmus;
• Pathologic miosis;
• Intake of drugs affecting vision;
• Participation in another biomedical study in parallel, if it affects vision or if interactions with cycloplegia exist;
• Intolerance to or contraindication to cycloplegia, e.g. due to narrow angle of the anterior ocular chamber;
• Hyperopes with more than +6 D refraction.