This work is licensed under the Creative Commons Attribution 4.0 International License.
Althomali T, Al-Qurashi I, Al-Thagafi S, Mohammed A, Almalki M. Prevalence of keratoconus among patients seeking laser vision correction in Taif area of Saudi Arabia. Saudi J Ophthalmol. 2018; 32:114–8.AlthomaliTAl-QurashiIAl-ThagafiSMohammedAAlmalkiMPrevalence of keratoconus among patients seeking laser vision correction in Taif area of Saudi Arabia2018321148Search in Google Scholar
Jonas J, Nangia V, Matin A, Kulkarni M, Bhojwani K. Prevalence and associations of keratoconus in rural Maharashtra in central India: the central India eye and medical study. Am J Ophthalmol. 2009; 148:760–5.JonasJNangiaVMatinAKulkarniMBhojwaniKPrevalence and associations of keratoconus in rural Maharashtra in central India: the central India eye and medical study20091487605Search in Google Scholar
Millodot M, Shneor E, Albou S, Atlani E, Gordon-Shaag A. Prevalence and associated factors of keratoconus in Jerusalem: a cross-sectional study. Ophthalmic Epidemiol. 2011; 18:91–7.MillodotMShneorEAlbouSAtlaniEGordon-ShaagAPrevalence and associated factors of keratoconus in Jerusalem: a cross-sectional study201118917Search in Google Scholar
Xu L, Wang Y, Guo Y, You Q, Jonas J. Prevalence and associations of steep cornea/keratoconus in Greater Beijing. the Beijing eye study. PLoS One. 2012; 7:e39313. doi: 10.1371/journal.pone.0039313XuLWangYGuoYYouQJonasJPrevalence and associations of steep cornea/keratoconus in Greater Beijing. the Beijing eye study20127e3931310.1371/journal.pone.0039313Open DOISearch in Google Scholar
Gorskova EN. Sevost’ianov EN. Epidemiology of keratoconus in the Urals. Vestn Oftalmol. 1998; 114:38–40.GorskovaENSevost’ianovENEpidemiology of keratoconus in the Urals19981143840Search in Google Scholar
Hashemi H, Beiranvand A, Khabazkhoob M, Asgari S, Emamian MH, Shariati M, Fotouhi A. Prevalence of keratoconus in a population-based study in Shahroud. Cornea. 2013; 32:1441–5.HashemiHBeiranvandAKhabazkhoobMAsgariSEmamianMHShariatiMFotouhiAPrevalence of keratoconus in a population-based study in Shahroud20133214415Search in Google Scholar
Hashemi H, Khabazkhoob M, Yazdani N, Ostadimoghaddam H, Norouzirad R, Amanzadeh K, et al. The prevalence of keratoconus in a young population in Mashhad, Iran. Ophthalmic Physiol Opt. 2014; 34:519–27.HashemiHKhabazkhoobMYazdaniNOstadimoghaddamHNorouziradRAmanzadehKThe prevalence of keratoconus in a young population in Mashhad, Iran20143451927Search in Google Scholar
Kennedy R, Bourne W, Dyer J. A 48-year clinical and epidemiologic study of keratoconus. Am J Ophthalmol. 1986; 101:267–73.KennedyRBourneWDyerJA 48-year clinical and epidemiologic study of keratoconus198610126773Search in Google Scholar
Ljubic A. Keratoconus and its prevalence in macedonia. Maced J Med Sci. 2009; 2:58–62.LjubicAKeratoconus and its prevalence in macedonia200925862Search in Google Scholar
Pearson A, Soneji B, Sarvananthan N, Sandford-Smith J. Does ethnic origin influence the incidence or severity of keratoconus? Eye (Lond). 2000; 14:625–8.PearsonASonejiBSarvananthanNSandford-SmithJDoes ethnic origin influence the incidence or severity of keratoconus?2000146258Search in Google Scholar
Shneor E, Millodot M, Gordon-Shaag A, Essa M, Anton M, Barbara R, Barbara A. Prevalence of keratoconus among young Arab students in Israel. Int J Keratoconus Ectatic Corneal Dis. 2014; 3:9. doi: 10.5005/jp-journals-10025-1070ShneorEMillodotMGordon-ShaagAEssaMAntonMBarbaraRBarbaraAPrevalence of keratoconus among young Arab students in Israel20143910.5005/jp-journals-10025-1070Open DOISearch in Google Scholar
Waked N, Fayad AM, Fadlallah A, El Rami H. Keratoconus screening in a Lebanese students’ population. J Fr Ophtalmol. 2012; 35:23–9.WakedNFayadAMFadlallahAEl RamiHKeratoconus screening in a Lebanese students’ population201235239Search in Google Scholar
Gordon-Shaag A, Millodot M, Shneor E. The epidemiology and etiology of keratoconus. Int J Keratoconus Ectatic Corneal Dis. 2012; 1:7–15.Gordon-ShaagAMillodotMShneorEThe epidemiology and etiology of keratoconus20121715Search in Google Scholar
McMonnies C. Screening for keratoconus suspects among candidates for refractive surgery. Clin Exp Optom. 2014; 97:492–8.McMonniesCScreening for keratoconus suspects among candidates for refractive surgery2014974928Search in Google Scholar
Vandenbroucke JP, von Elm E, Altman DG, Gøtzsche PC, Mulrow CD, Pocock SJ, et al. Strengthening the Reporting of Observational Studies in Epidemiology (STROBE): explanation and elaboration. PLoS Med. 2007; 4:e297. doi: 10.1371/journal.pmed.0040297VandenbrouckeJPvon ElmEAltmanDGGøtzschePCMulrowCDPocockSJStrengthening the Reporting of Observational Studies in Epidemiology (STROBE): explanation and elaboration20074e29710.1371/journal.pmed.0040297Open DOISearch in Google Scholar
Benchimol EI, Smeeth L, Guttmann A, Harron K, Moher D, Petersen I, et al. The REporting of studies Conducted using Observational Routinely-collected health Data (RECORD) statement. PLoS Med. 2015; 12:e1001885. doi: 10.1371/journal.pmed.1001885BenchimolEISmeethLGuttmannAHarronKMoherDPetersenIThe REporting of studies Conducted using Observational Routinely-collected health Data (RECORD) statement201512e100188510.1371/journal.pmed.1001885Open DOISearch in Google Scholar
Belin MW, Ambrósio R. Scheimpflug imaging for keratoconus and ectatic disease. Indian J of Ophthalmol. 2013; 61:401–6.BelinMWAmbrósioRScheimpflug imaging for keratoconus and ectatic disease2013614016Search in Google Scholar
Ruiseñor Vázquez PR, Galletti JD, Minguez N, Delrivo M, Fuentes Bonthoux F, Pförtner T, Galletti JG. Pentacam scheimpflug tomography findings in topographically normal patients and subclinical keratoconus cases. Am J Ophthalmol. 2014; 158:32–40.e2.Ruiseñor VázquezPRGallettiJDMinguezNDelrivoMFuentes BonthouxFPförtnerTGallettiJGPentacam scheimpflug tomography findings in topographically normal patients and subclinical keratoconus cases20141583240.e2Search in Google Scholar
Villavicencio OF, Gilani F, Henriquez MA, Izquierdo Jr L, Ambrosio Jr RR, Belin MW. Independent population validation of the Belin/Ambrósio enhanced ectasia display: implications for keratoconus studies and screening. Int J Keratoconus Ectatic Corneal Dis. 2014; 3:1. doi: 10.5005/jp-journals-10025-1069VillavicencioOFGilaniFHenriquezMAIzquierdoLJrAmbrosioRRJrBelinMWIndependent population validation of the Belin/Ambrósio enhanced ectasia display: implications for keratoconus studies and screening20143110.5005/jp-journals-10025-1069Open DOISearch in Google Scholar
Ziaei H, Jafarinasab MR, Javadi MA, Karimian F, Poorsalman H, Mahdavi M, et al. Epidemiology of keratoconus in an Iranian population. Cornea. 2012; 31:1044–7.ZiaeiHJafarinasabMRJavadiMAKarimianFPoorsalmanHMahdaviMEpidemiology of keratoconus in an Iranian population20123110447Search in Google Scholar
Hashemi H, Heydarian S, Yekta A, Ostadimoghaddam H, Aghamirsalim M, Derakhshan A, Khabazkhoob M. High prevalence and familial aggregation of keratoconus in an Iranian rural population: a population-based study. Ophthalmic Physiol Opt. 2018; 38:447–55.HashemiHHeydarianSYektaAOstadimoghaddamHAghamirsalimMDerakhshanAKhabazkhoobMHigh prevalence and familial aggregation of keratoconus in an Iranian rural population: a population-based study20183844755Search in Google Scholar
Farhood Q. Prevalence of refractive errors in patients with keratoconus among sample of Iraqi population. J Ophthalmol. 2017; 2. doi: 10.23880/OAJO-16000134FarhoodQPrevalence of refractive errors in patients with keratoconus among sample of Iraqi population2017210.23880/OAJO-16000134Open DOISearch in Google Scholar
Nielsen K, Hjortdal J, Aagaard Nohr E, Ehlers N. Incidence and prevalence of keratoconus in Denmark. Acta Ophthalmol Scand. 2007; 85:890–2.NielsenKHjortdalJAagaard NohrEEhlersNIncidence and prevalence of keratoconus in Denmark2007858902Search in Google Scholar
Godefrooij D, de Wit G, Uiterwaal C, Imhof S, Wisse R. Age-specific incidence and prevalence of keratoconus: a nationwide registration study. Am J Ophthalmol. 2017; 175:169–72.GodefrooijDde WitGUiterwaalCImhofSWisseRAge-specific incidence and prevalence of keratoconus: a nationwide registration study201717516972Search in Google Scholar
Hwang S, Lim D, Chung T. Prevalence and incidence of keratoconus in South Korea: a nationwide population-based study. Am J Ophthalmol. 2018; 192:56–64.HwangSLimDChungTPrevalence and incidence of keratoconus in South Korea: a nationwide population-based study20181925664Search in Google Scholar
Serdarogullari H, Tetikoglu M, Karahan H, Altin F, Elcioglu M. Prevalence of keratoconus and subclinical keratoconus in subjects with astigmatism using pentacam derived parameters. J Ophthalmic Vis Res. 2013; 8:213–9.SerdarogullariHTetikogluMKarahanHAltinFElciogluMPrevalence of keratoconus and subclinical keratoconus in subjects with astigmatism using pentacam derived parameters201382139Search in Google Scholar
Wilson SE, Klyce SD. Screening for corneal topographic abnormalities before refractive surgery. Ophthalmol. 1994;101(1):147–52. doi:10.1016/s0161-6420(94)31372-8WilsonSEKlyceSDScreening for corneal topographic abnormalities before refractive surgery1994101114752doi:10.1016/s0161-6420(94)31372-8Search in Google Scholar
Shamshad S. Prevalence of consanguinity in Muslim community – a review. Int J Sci Res. 2015; 4:2203–7.ShamshadSPrevalence of consanguinity in Muslim community – a review2015422037Search in Google Scholar
Valdez-García JE, Sepúlveda R, Salazar-Martínez JJ, Lozano-Ramírez JF. Prevalence of keratoconus in an adolescent population. Revista Mexicana de Oftalmología. 2014; 88:95–8.Valdez-GarcíaJESepúlvedaRSalazar-MartínezJJLozano-RamírezJFPrevalence of keratoconus in an adolescent population201488958Search in Google Scholar
Reeves S, Ellwein L, Kim T, Constantine R, Lee P. Keratoconus in the medicare population. Cornea. 2009; 28:40–2.ReevesSEllweinLKimTConstantineRLeePKeratoconus in the medicare population200928402Search in Google Scholar
Vazirani J, Basu S. Keratoconus: current perspectives. Clin Ophthalmol. 2013; 7:2019–30.VaziraniJBasuSKeratoconus: current perspectives20137201930Search in Google Scholar
Assiri A. Yousuf BI. Quantock AJ. Murphy PJ. Incidence and severity of keratoconus in Asir province, Saudi Arabia. Br J Ophthalmol. 2005; 89:1403–6.AssiriAYousufBIQuantockAJMurphyPJIncidence and severity of keratoconus in Asir province, Saudi Arabia20058914036Search in Google Scholar
Saini J, Saroha V, Singh P, Sukhija J, Jain A. Keratoconus in Asian eyes at a tertiary eye care facility. Clin Exp Optom. 2004; 87:97–101.SainiJSarohaVSinghPSukhijaJJainAKeratoconus in Asian eyes at a tertiary eye care facility20048797101Search in Google Scholar
Elbedewy HA, Wasfy TE, Soliman SS, Sabry MM, Awara AM, El Emam SY, et al. Prevalence and topographical characteristics of keratoconus in patients with refractive errors in the Egyptian delta. Int Ophthalmol. 2019; 39:1459–65.ElbedewyHAWasfyTESolimanSSSabryMMAwaraAMEl EmamSYPrevalence and topographical characteristics of keratoconus in patients with refractive errors in the Egyptian delta201939145965Search in Google Scholar
Pobelle-Frasson C, Velou S, Huslin V, Massicault B, Colin J. Keratoconus: what happens with older patients? J Fr Ophtalmol. 2004; 27:779–82.Pobelle-FrassonCVelouSHuslinVMassicaultBColinJKeratoconus: what happens with older patients?20042777982Search in Google Scholar
Cruz-Becerril A, Valdivia A, Peralta R, Dominguez-Fernandez R, Castro-Reyes M. Prevalence of refractive errors in Mexican patients with keratoconus. Clin Optom. 2015; 7:39–44Cruz-BecerrilAValdiviaAPeraltaRDominguez-FernandezRCastro-ReyesMPrevalence of refractive errors in Mexican patients with keratoconus201573944Search in Google Scholar
Shanti Y, Beshtawi I, Zyoud S, Abu-Samra A, Abu-Qamar A, Barakat R, Shehada R. Characteristics of keratoconic patients at two main eye centres in Palestine: a cross-sectional study. BMC Ophthalmol. 2018; 18:95. doi: 10.1186/s12886-018-0762-xShantiYBeshtawiIZyoudSAbu-SamraAAbu-QamarABarakatRShehadaRCharacteristics of keratoconic patients at two main eye centres in Palestine: a cross-sectional study2018189510.1186/s12886-018-0762-xOpen DOISearch in Google Scholar
Mohd-Ali B, Abdu M, Yaw C, Mohidin N. Clinical characteristics of keratoconus patients in Malaysia: a review from a cornea specialist centre. J Optom. 2012; 5:38–42.Mohd-AliBAbduMYawCMohidinNClinical characteristics of keratoconus patients in Malaysia: a review from a cornea specialist centre201253842Search in Google Scholar