The Effectiveness of Systane PRO Preservative Free Verses Blink Triple Care Preservative Free

Inclusion Criteria: * Age: Adults ≥ 18 years. * Diagnosis: Clinical diagnosis of mild to moderate dry eye disease in at least one eye with OSDI ≥ 13 to ≤ 32 at screening. * OSDI ≥ 13 to ≤ 32 at screening. * Objective evidence: NITBUT ≤ 10 seconds in the study eye(s) at screening. * Ocular surface status: CFS ≤ grade 3 (Oxford or NEI scale) in the study eye(s). * Stable medications: Systemic medications that may affect tear film must be stable ≥ 30 days prior to screening and expected to remain stable during the study. * Ability to participate: Able and willing to comply with procedures, attend visits, and provide written informed consent. * Contraception: Women of childbearing potential must agree to use an acceptable method of contraception for the study duration and have a negative pregnancy test at screening. Exclusion Criteria: * Active ocular infection or inflammation unrelated to DED (e.g., bacterial/viral conjunctivitis, active uveitis). * Severe ocular surface disease beyond typical DED (e.g., severe keratitis, Stevens-Johnson syndrome, ocular cicatricial pemphigoid). * Excessive corneal staining: CFS \> grade 3 in the study eye(s). * Recent ocular surgery or procedure: ocular surgery, laser, or punctal occlusion within 6 months prior to screening. * Current or prior use within 6 months before screening of either study drop (Systane PRO PF or Blink Triple Care PF) * Contact lens wear: soft or rigid contact lens use within 7 days prior to baseline, or unwillingness …