Evaluation of Performance and Safety of Eye Drops With Hyaluronic Acid 0.30% and 0.15%

Inclusion criteria

• ✓. Patients having signed written informed consent to participate in the investigation obtained according to Good Clinical Practice (GCP);
• ✓. Patients having an age ≥ 18 years;
• ✓. Patients with diagnosis of dry eye syndrome (according to Tear Film and Ocular Surface Society \[TFOS\] Dry Eye Workshop \[DEWS\] definition);
• ✓. Diagnosis of dry eye syndrome for the investigation assessed through at least the following exams: slit lamp examination (SLE), tear (lacrimal) meniscus exam, Schirmer's test I, TFBUT, cornea and conjunctiva staining, IDEEL questionnaire ("Dry Eye Symptom-Bother" module); 4a) Diagnosis of mild dry eye syndrome will be based on the following criteria:
• ✓. Patients being able to comprehend the full nature and the purpose of the investigation, including possible risks and side effects, and patients able to cooperate with the Investigator and to comply with the requirements of the entire investigation (including ability to attend all the planned investigation visits according to the time limits), based on Investigator's judgment;
• ✓. Female patients having a negative urine pregnancy test result at screening and using an appropriate method of contraception for at least 30 days before inclusion and during the whole investigation period, according to the definition of Note 3 of ICH M3 Guideline\*, if females of childbearing potential (i.e., not permanently sterilized - post hysterectomy or tubal ligation status - or not postmenopausal);