References
- Siganos CS, Tsiklis NS, Miltsakakis DG, et al. Changing indications for penetrating keratoplasty in Greece, 1982–2006: a multicenter study. Cornea 2010;29(4):372–374
- Kymes SM, Walline JJ, Zadnik K, et al. Quality of life in keratoconus. Am J Ophthalmol 2004;138(4):527–535
- Yildiz EH, Cohen EJ, Virdi AS, et al. Quality of life in keratoconus patients after penetrating keratoplasty. Am J Ophthalmol 2010;149(3):416–422, e411–412
- Ihalainen A. Clinical and epidemiological features of keratoconus genetic and external factors in the pathogenesis of the disease. Acta Ophthalmol Suppl 1986;178:1–64
- Pearson AR, Soneji B, Sarvananthan N, et al. Does ethnic origin influence the incidence or severity of keratoconus? Eye (Lond) 2000;14(Pt 4):625–628
- Nielsen K, Hjortdal J, Aagaard Nohr E, et al. Incidence and prevalence of keratoconus in Denmark. Acta Ophthalmol Scand 2007;85(8):890–892
- Rabinowitz YS. Keratoconus. Surv Ophthalmol 1998;42(4):297–319
- Jonas JB, Nangia V, Matin A, et al. Prevalence and associations of keratoconus in rural maharashtra in central India: the central India eye and medical study. Am J Ophthalmol 2009;148(5):760–765
- Millodot M, Shneor E, Albou S, et al. Prevalence and associated factors of keratoconus in Jerusalem: a cross-sectional study. Ophthalmic Epidemiol 2011;18(2):91–97
- Holladay JT. Keratoconus detection using corneal topography. J Refract Surg 2009;25(10 Suppl.):S958–962
- Rabinowitz YS, McDonnell PJ. Computer-assisted corneal topography in keratoconus. Refract Corneal Surg 1989;5(6):400–408
- Dastjerdi MH, Hashemi H. A quantitative corneal topography index for detection of keratoconus. J Refract Surg 1998;14(4):427–436
- Ucakhan OO, Cetinkor V, Ozkan M, et al. Evaluation of Scheimpflug imaging parameters in subclinical keratoconus, keratoconus, and normal eyes. J Cataract Refract Surg 2011;37(6):1116–1124
- KhabazKhoob M, Hashemi H, Yazdani K, et al. Keratometry measurements, corneal astigmatism and irregularity in a normal population: the Tehran Eye Study. Ophthalmic Physiol Opt 2010;30(6):800–805
- Dumitrica DM, Colin J. Indices for the detection of keratoconus. Oftalmologia 2010;54(2):19–29
- Ziaei H, Jafarinasab MR, Javadi MA, et al. Epidemiology of keratoconus in an Iranian population. Cornea 2012;31(9):1044
- Hashemi H, Fotouhi A, Mohammad K. The Tehran Eye Study: research design and eye examination protocol. BMC Ophthalmol 2003;3:8
- Holladay JT. Keratoconus detection using corneal topography. J Refract Surg 2009;25(10 Suppl.):S958--S962
- Agarwal S, Agarwal A. Dr. Agarwals’ step by step corneal topography. Abingdon: Taylor & Francis Group; 2005
- Reeves SW, Ellwein LB, Kim T, et al. Keratoconus in the Medicare population. Cornea 2009;28(1):40–42
- Ajaiyeoba AI, Isawumi MA, Adeoye AO, et al. Pattern of eye diseases and visual impairment among students in southwestern Nigeria. Int Ophthalmol 2007;27(5):287–292
- Waked N, Fayad AM, Fadlallah A, et al. Keratoconus screening in a Lebanese students’ population. J Fr Ophtalmol 2011;35(1):23–29
- Hofstetter HW. A keratoscopic survey of 13,395 eyes. Am J Optom Arch Am Acad Optom 1959;36(1):3–11
- Kennedy RH, Bourne WM, Dyer JA. A 48-year clinical and epidemiologic study of keratoconus. Am J Ophthalmol 1986;101(3):267–273
- Lim L, Wei RH, Chan WK, et al. Evaluation of keratoconus in Asians: role of Orbscan II and Tomey TMS-2 corneal topography. Am J Ophthalmol 2007;143(3):390–400
- Fam HB, Lim KL. Corneal elevation indices in normal and keratoconic eyes. J Cataract Refract Surg 2006;32(8):1281–1287
- Georgiou T, Funnell CL, Cassels-Brown A, et al. Influence of ethnic origin on the incidence of keratoconus and associated atopic disease in Asians and white patients. Eye (Lond) 2004;18(4):379–383
- Khan MD, Kundi N, Saeed N, et al. Incidence of keratoconus in spring catarrh. Br J Ophthalmol 1988;72(1):41–43
- Li X, Rabinowitz YS, Rasheed K, et al. Longitudinal study of the normal eyes in unilateral keratoconus patients. Ophthalmology 2004;111(3):440–446
- Owens H, Gamble GD, Bjornholdt MC, et al. Topographic indications of emerging keratoconus in teenage New Zealanders. Cornea 2007;26(3):312–318
- Ertan A, Muftuoglu O. Keratoconus clinical findings according to different age and gender groups. Cornea 2008;27(10):1109–1113
- Ernst BJ, Hsu HY. Keratoconus association with axial myopia: a prospective biometric study. Eye Contact Lens 2011;37(1):2–5