Ansari, Tahir Husain, and Yusuf Rizvi. “Comparison of Two Ophthalmic Solutions of Olopatadine Hydrochloride (0.1%) and Epinastine Hydrochloride (0.05%) on Clinical Signs of Vernal Keratoconjunctivitis and Side Effects of the Two Drugs”. International Journal of Research in Medical Sciences 8, no. 10 (September 24, 2020): 3565–3570. Accessed October 12, 2025. https://www.msjonline.org/index.php/ijrms/article/view/8588.