Efficacy and Safety of a Treatment for Dry Eye Syndrome: Thealoz

Inclusion Criteria: * Man/woman ≥ 18 years old, able to freely give consent to participate in the study * Fluorescein corneal staining ≥ 1 and ≤ 3 in Oxford Scales * At least 2 of the following tests altered: * Ocular Surface Disease Index (OSDI) Test symptoms between 12 and 40 * BUT ≤10 seconds * Lissamine green conjunctival staining ≥ 1 * Schirmer Test without anesthesia ≤ 5 mm * Informed consent signed * Data protection consent signed Exclusion Criteria: * Sensitivity or known intolerance to any of the product used in the study * Story of ocular infections or severe ocular inflammation within the 6 previous months to study inclusion * Any active ocular pathology other than Dry Eye Syndrome * Any traumatize or ocular surgery that may affect corneal sensitivity and/or normal tear distribution (e.g. cataract surgery, refractive surgery) within the 6 previous months to study inclusion * Use of contact lenses in the 3 previous months to study inclusion * Use of any ocular topical medications other than the treatment for Dry Eye Syndrome * Ocular treatment for Dry Eye Syndrome with corticosteroids 1 month before inclusion visit or Cyclosporin A 3 months before inclusion * Diagnosis of Rosacea or Severe Blepharitis (associated to systemic or ocular pathologies) Any severe uncontrolled systemic disease that may affect the eye (except for primary or secondary Sjögren) * Start, discontinuation or change within the study of the dosage of antihistaminics, cholinergic agents, beta blockers, anti depressants or any other systemic drugs with potential effects in the tear film * No pregnant or breastfeeding women is allowed to participate in the study. Childbearing potential women must use contraceptive means during the whole study. * Participation in another clinical trial in the last 30 days before study inclusion