درويش تيم, and معلا علي. 2021. “Pain After Transepithelial Photorefractive Keratectomy and Its Relation With Gender, Spherical Equivalent, Tear Film Break up Time and Corneal Thickness”. Tishreen University Journal -Medical Sciences Series 43 (3). https://journal.tishreen.edu.sy/index.php/hlthscnc/article/view/10646.