Gupta, P., and V. Pai. H. “Prevalence of Glaucoma in First-Degree Relatives of Patients With Primary Open-Angle Glaucoma and Normal-Tension Glaucoma”. Asian Journal of Ophthalmology, Vol. 16, no. 2, Nov. 2018, pp. 95-00, https://asianjo.com/index.php/AsianJO/article/view/374.