Chhabra, Hema, Anita Gupta, and Gursatinder Singh. “A Comparative Study of Benzalkonium Chloride-Free Latanoprost Versus Benzalkonium Chloride-Preserved Latanoprost on Ocular Surface Health in Patients of Primary Open Angle Glaucoma”. International Journal of Basic & Clinical Pharmacology 6, no. 5 (April 24, 2017): 1110–1114. Accessed July 15, 2025. https://www.ijbcp.com/index.php/ijbcp/article/view/1451.