Thapa, M., S. Khanal, G. B. Shrestha, and A. K. Sharma. “Retinal Nerve Fibre Layer Thickness in a Healthy Nepalese Population by Spectral Domain Optical Coherence Tomography”. Nepalese Journal of Ophthalmology, vol. 6, no. 2, Dec. 2014, pp. 131-9, doi:10.3126/nepjoph.v6i2.11709.