Efficacy of bilateral OC-01 (varenicline solution) nasal spray in alleviating signs and symptoms of dry eye disease: A systematic review - Ballesteros-Sánchez A; Borroni D; De-Hita-Cantalejo C; Sánchez-González MC; Sanchez-Gomez S; Rocha-de-Lossada C; Sánchez-González JM (Contact Lens & Anterior Eye, 2024)