خضور م. ., يوسف ح., and درويش ت. . “The Effect of Prolonged Use of Face Mask on the Changes in Tear-Film Status and Ocular Surface Disease Index Score”. Tishreen University Journal -Medical Sciences Series, vol. 45, no. 3, July 2023, pp. 409-17, https://journal.tishreen.edu.sy/index.php/hlthscnc/article/view/15212.