Baskin, D, and S Waller. “Implantation of Collagen Punctal Plugs for the Reduction of Post-Keratoplasty Ametropia”. Nepalese Journal of Ophthalmology 1, no. 1 (September 16, 2010): 72–74. Accessed May 18, 2024. https://nepjol.info/index.php/NEPJOPH/article/view/3676.