REFERENCES
- Mansour AM. Racial variation of optic disc size. Ophthalmic Res 1991;23(2):67–72.
- Ramrattan RS, Wolfs RCW, Jonas JB, Hofman A, de Jong PTVM. Determinants of optic disc characteristics in a general population − The Rotterdam Study. Ophthalmology 1999;106:1588–1596.
- Miglior S, Brigatti L, Velati P, Balestreri C, Rossetti L, Bujtar E, Orzalesi N. Relationship between morphometric optic disc parameters, sex and axial length. Curr Eye Res 1994;13:119–124.
- Garway-Heath DF, Ruben ST, Viswanathan A, Hitchings RA. Vertical cup/disc ratio in relation to optic disc size: its value in the assessment of the glaucoma suspect. Br J Ophthalmol 1998;82:1118–1124.
- Foster PJ, Buhrmann R, Quigley HA, Johnson GJ. The definition and classification of glaucoma in prevalence surveys. Br J Ophthalmol 2002;86:238–242.
- Arvind H, George R, Raju P, et al. Neural rim characteristics of healthy South Indians−The Chennai Glaucoma Study. Invest Ophthalmol Vis Sci 2008;49:3457–3464.
- Arvind H, Paul PG, Raju P, Baskaran M, et al. Methods and design of the Chennai Glaucoma Study. Ophthalmic Epidemiol 2003;10:337–348.
- World Medical Association. Declaration of Helsinki. Recommendation guiding physicians in bio-medical research involving human subjects. JAMA 1997;277:925–926.
- Chylack LT, Leske MC, McCarthy D, et al. Lens Opacities Classification System II (LOCS II). Arch Ophthalmol 1989;107:991–997.
- Vijaya L, George R, Pradeep GP, Baskaran M, Arvind H, Raju P, Ve RS, Kumaramanickavel G, McCarty C. Prevalence of open-angle glaucoma in a rural South Indian population. Invest Ophthalmol Vis Sci 2005;46:4461–4467.
- Jonas JB, Gusek GC, Naumann GOH. Optic disc, cup and neuroretinal rim size, configuration and correlations in normal eyes. Invest Ophthalmol Vis Sci 1988;29:1151–1158.
- Williams TD. Determination of the true size of an object on the fundus of the living eye. Optometry Vision Sci 1992;69:717–720.
- Varma R, Tielsch JM, Quigley HA, Hilton SC, Katz J, Spaeth GL, Sommer A. Race-, age-, gender-, and refractive error-related differences in the normal optic disc. Arch Ophthalmol 1994;112:1068–1076.
- Vernon SA, Hawker MJ, Ainsworth G, et al. Laser scanning tomography of the optic nerve head in a normal elderly population: The Bridlington Eye Assessment Project. Invest Ophthalmol Vis Sci 2005;46:2823–2828.
- Wang Y, Xu L, Zhang L, Yang H, Ma Y, Jonas JB. Optic disc size in a population based study in northern China: the Beijing Eye Study. Br J Ophthalmol 2006;90:353–356.
- Uchida H, Yamamoto T, Araie M, et al. Topographic characteristics of the optic nerve head measured with scanning laser tomography in normal Japanese subjects. Jpn J Ophthalmol 2005;49:469–476.
- Meyer T, Howland HC. How large is the optic disc? Systematic errors in fundus cameras and topographers. Ophthalmic Physiol Opt 2001;21:139–150.
- Jonas JB, Thomas R, George R, Berenshtein E, Muliyil J. Optic disc morphology in South India: the Vellore Eye Study. Br J Ophthalmol 2003 Feb;87(2):189–196.
- Sekhar GC, Prasad K, Dandona R, John RK, Dandona L. Planimetric optic disc parameters in normal eyes: a population-based study in South India. Indian J Ophthalmol 2001;49:19–23.
- Bourne RRA, Foster PJ, Bunce C, et al. The morphology of the optic nerve head in the Singaporean Chinese population (the Tanjong Pagar Study): part 1− optic nerve head morphology BrJ Ophthalmol 2008;92:303–309
- Wensor MD, McCarty CA, Stanislavsky YL, Livingston PM, Taylor HR. The prevalence of glaucoma in the Melbourne Visual Impairment Project. Ophthalmology 1998;105:733–739.
- Leske MC, Connell AMS, Schachat AP, Hyman L, the Barbados Eye Study Group. The Barbados Eye Study: prevalence of open angle glaucoma. Arch Ophthalmol 1994;112:821–829.
- Healey PR, Mitchell P, Smith W, Wang JJ. Relationship between cup-disc ratio and optic disc diameter: the Blue Mountains Eye Study. Aust N Z J Ophthalmol 1997;25(Suppl. 1):S99–101.
- Crowston JG, Hopley CR, Healey PR, Lee A, Mitchell P. The effect of optic disc diameter on vertical cup to disc ratio percentiles in a population based cohort: the Blue Mountains Eye Study. Br J Ophthalmol 2004;88:766–770.
- Hawker MJ, Vernon SA, Ainsworth G, et al. Asymmetry in optic disc morphometry as measured by Heidelberg Retina Tomography in a normal elderly population: the Bridlington Eye Assessment Project. Invest Ophthalmol Vis Sci 2005;46:4153–4158.
- Ong LS, Mitchell P, Healey PR, Cumming RG. Asymmetry in optic disc parameters: the Blue Mountains Eye Study. Invest Ophthalmol Vis Sci 1999;40:849–857.