1. Jonas JB, Schmidt AM, Muller-Bergh JA, Schlotzer-Schrehardt UM, Naumann GO. Human optic nerve fiber count and optic disc size. Invest Ophthalmol Vis Sci. 1992;33:2012–8.
2. Provis J, van Driel D, Billson FA, Russell P. Human fetal optic nerve: overproduction and elimination of retinal axons during development. J Comp Neurol. 1985;238:92–100.
3. Mikelberg F, et al. The normal human optic nerve: axon count and axon diameter distribution. Ophthalmology. 1989;96:1325–8.
4. Samarawickrama C, Hong T, Jonas JB, Mitchell P. Measurement of normal optic nerve head parameters. Surv Ophthalmol. 2012;57:317–36.
5. Snell R, Lemp MA. Clinical anatomy of the eye. Oxford: Blackwell Science Inc; 1998.