Roka, Narayani, and SP Shrestha. “Assessment of Tear Secretion and Tear Film Instability in Cases With Pterygium and Normal Subjects”. Nepalese Journal of Ophthalmology 5, no. 1 (March 25, 2013): 16–23. Accessed November 22, 2024. https://nepjol.info/index.php/NEPJOPH/article/view/7816.