Dry eye disease, also known as keratoconjunctivitis sicca (KCS), is a multifactorial disease of the ocular surface characterized by a loss of homeostasis of the tear film and is accompanied by ocular symptoms in which tear film instability and hyperosmolarity and ocular surface inflammation and damage play etiological roles.1 Dry eye disease is a vicious cycle in which hyperosmolarity leads to an inflammatory cascade that results in ocular surface damage.2The clinical presentation of KCS varies from patient to patient, and the relationship between signs and symptoms is not linear.3 Symptoms of KCS may include burning, stinging, grittiness, foreign body sensation, and dryness. Although the prevalence of KCS is difficult to determine because of inconsistent definitions and populations, studies have shown that the prevalence ranges from 5% to 33%.4Treatment of KCS progresses in a stepwise approach, starting with education, lid hygiene, and modification of environmental factors and then progressing to nonpharmacologic and pharmacologic management.5 There are currently 2 topical ocular pharmacologic treatments in use to treat KCS, cyclosporine 0.05% ophthalmic emulsion (Restasis; Allergan, Irvine, CA) and lifitegrast 5% ophthalmic solution (Xiidra; Shire US Inc, Lexington, MA).6,7The current pharmacologic treatments of KCS have several limitations. Almost 20% of patients with dry eye are dissatisfied with their overall treatment, which may include artificial tears, ocular lubricants, and prescription medications; areas of dissatisfaction include symptom relief, treatment side effects, and amount of time it takes to experience symptom relief.8 In addition, lipophilic drugs such as cyclosporine A (CsA) have low ocular tissue bioavailability and require innovative approaches to get more of the drug into ocular tissue.9,10 This highlights the unmet need for an improved ophthalmic drug delivery system.