Soni, Dcepak, et al. “Analysis of Retinal Nerve Fibre Layer Thickness With HtrAlc AndBlood Sugar Levels in Type 2 Diabetes Mellitus Patients Without Clinical Diabetic Retinopathy”. UP Journal of Ophthalmology, vol. 5, no. 01, July 2023, pp. 5-12, https://upjo.org/index.php/upjo/article/view/323.