Ruangphirakul, C. “A Comparative Study of Visual Outcomes Between Extracapsular Cataract Extraction and Phacoemulsification in Somdejprasangkharach XVII Hospital, Suphanburi Province, Thailand”. Journal of Health Science of Thailand, vol. 24, no. 5, Nov. 2017, pp. 961-6, https://thaidj.org/index.php/JHS/article/view/543.