Ahmed, Anzar, et al. “To Study the Efficacy of Intravitreal Injection Ranibizumab on Cystoid Macular Edema in the Retinal Vein Occlusion ”. UP Journal of Ophthalmology, vol. 9, no. 01, July 2021, pp. 35-37, https://www.upjo.org/index.php/upjo/article/view/384.