Shrestha, A, S Shrestha, P Koirala, and B Pun. “Ultrasound Evaluation of Normal Orbital Preseptal Thickness”. Nepalese Journal of Ophthalmology 9, no. 1 (June 20, 2017): 56–59. Accessed May 3, 2024. https://www.nepjol.info/index.php/NEPJOPH/article/view/17535.