Evaluation of the Efficacy of OC-02 Nasal Spray on Signs and Symptoms of Dry Eye Disease (the RAINIER Study)

Inclusion Criteria: * Have used and/or desired to use an artificial tear substitute for dry eye symptoms within 60 days prior to Visit 1 Exclusion Criteria: * Have had any intraocular surgery (such as cataract surgery), extraocular surgery (such as blepharoplasty) in either eye within three months or refractive surgery (e.g. laser epithelial keratomileusis, laser-assisted in-situ keratomileusis, photorefractive keratectomy or corneal implant) within twelve months of Visit 1 * Have a history or presence of any ocular disorder or condition in either eye that would, in the opinion of the Investigator, likely interfere with the interpretation of the study results or participant safety such as significant corneal or conjunctival scarring; pterygium or nodular pinguecula; current ocular infection, conjunctivitis, or inflammation not associated with dry eye; anterior (epithelial) basement membrane corneal dystrophy or other clinically significant corneal dystrophy or degeneration; ocular herpetic infection; evidence of keratoconus; etc. Blepharitis not requiring treatment and mild meibomian gland disease that are typically associated with dry eye disease are allowed. * Have a systemic condition or disease not stabilized or judged by the Investigator to be incompatible with participation in the study or with the lengthier assessments required by the study (e.g., current systemic infection, uncontrolled autoimmune disease, uncontrolled immunodeficiency disease, history of myocardial infarction or heart disease, etc.) * Have a known hypersensitivity to any of the procedural agents or study drug components * Have any condition or history that, in the opinion of the investigator, may interfere with study compliance, outcome measures, safety parameters, and/or the general medical condition of the subject