Kamil, Z. “Additive Effect of Supratarsal Olopatadine HCL 0.1% Injection In Patients of Vernal Keratoconjunctivitis On Topical Olopatadine”. Journal of Surgery Pakistan, Vol. 25, no. 4, Feb. 2021, pp. 139-42, https://jsp.org.pk/index.php/jsp/article/view/228.