Delfi, D., V. Virgayanti, and H. Gunawan. “Comparison Between SRK/T and Haigis Formulas on Visual Acuity of Patient With Senile Cataract Post-Phacoemulsification”. Open Access Macedonian Journal of Medical Sciences, vol. 9, no. T3, May 2021, pp. 19-22, doi:10.3889/oamjms.2021.6308.