Angmo, Dewang, et al. “Comparative Evaluation of Time Domain and Spectral Domain Optical Coherence Tomography in Retinal Nerve Fiber Layer Thickness Measurements”. Nepalese Journal of Ophthalmology, vol. 6, no. 2, Dec. 2014, pp. 185-91, doi:10.3126/nepjoph.v6i2.11692.