Anang Tribowo, Alie Solahuddin, Lady Kavotiner, Theodorus, and Vidya Hestika. “Ferning, Schimer I and Tear Break Up Time (TBUT) Accuracy Test in Post-Operative Cataract Patient With Extra Capsular Cataract Extraction (ECCE) Technique”. Bioscientia Medicina : Journal of Biomedicine and Translational Research 5, no. 2 (January 19, 2021): 279-285. Accessed April 18, 2021. http://bioscmed.com/index.php/bsm/article/view/219.