References
- Belin MW, Missry JJ. Technologies for corneal topography. In: Wu HK, Thompson VM, Steinert RF, et al. Editors Refractive Surgery. Thieme; New York: 1999. p. 63-78
- Miller D, Greiner JV. Corneal measurements and tests. In: Albert DM, Jakobiec FA, Editors Principles and Practice of Ophthalmology. W.B. Saunders Company; Philadelphia: 1994. p. 7
- Rubin ML. Optics for clinicians. Triad Publishing Company; Gainesville: 1993
- Wilson SE, Klyce SD. Advances in the analysis of corneal topography. Surv Ophthalmol 1991;35:269-77
- Maquire LJ. Keratometry, photokeratoscopy and computer-assisted topographic analysis. In: Krachmer JH, Mannis MJ, Holland EJ, Editors Cornea - Fundamentals of Cornea and External Disease. Mosby; St. Louis: 1997. p. 223-35
- Klyce SD. Computer-assisted corneal topography. High-resolution graphic presentation and analysis of keratoscopy. Invest Ophthalmol Vis Sci 1984;25:1426-35
- Klein SA. Optimal corneal ablation for eyes with arbitrary Hartmann–Shack aberrations. J Opt Soc Am A 1998;15:2580-8
- Rand R, Applegate R, Howland HC. A mathematical model of a placido disk keratometer and its implications for recovery of corneal topography. Optom Vis Sci 1997;74:926-30
- Bonnet R, Le Grand Y, Rapilly C. La Topographie Corneenne. N. Desroches; Paris, France: 1964
- Rao SN, Raviv T, Majmudar PA, et al. Role of orbscan II in screening keratoconus suspects before refractive corneal surgery. Ophthalmology 2002;109:1642-6
- Belin MW, Khachikian SS. New devices & clinical implications for measuring corneal thickness. Clin Exp Ophthalmol 2006;34:729-31
- Yağc R, Güler E, Uzun F, et al. Assessment of anterior chamber parameters after cataract surgery by Galilei dual Scheimpflug analyzer. Eye Contact Lens 2015;41:40-3
- Ambrosio R. Jr, Alonso RS, Luz A, et al. Corneal-thickness spatial profile and corneal volume distribution: tomographic indices to detect keratoconus. J Cataract Refract Surg 2006;32:1851-9
- Ambrosio RJr, Klyce SD, Wilson SE. Corneal topographic and pachymetric screening of keratorefractive patients. J Refract Surg 2003;19:24-9
- Ciolino JB, Khachikian SS, Belin MW. Comparison of corneal thickness measurements by ultrasound and Scheimpflug photography in eyes that have undergone laser in situ keratomileusis. Am J Ophthalmol 2008;145:75-80
- Kanellopoulos AJ, Asimellis G. Clinical correlation between placido, Scheimpflug and LED color reflection topographies in imaging of a scarred cornea. Case Rep Ophthalmol 2014;5:311-17
- Kanellopoulos AJ, Asimellis G. Anterior segment optical coherence tomography: assisted topographic corneal epithelial thickness distribution imaging of a keratoconus patient. Case Rep Ophthalmol 2013;4:74-8
- Kanellopoulos AJ, Asimellis G. OCT-derived comparison of corneal thickness distribution and asymmetry differences between normal and keratoconic eyes. Cornea 2014;33:1274-81
- Li Y, Shekhar R, Huang D. Corneal pachymetry mapping with high-speed optical coherence tomography. Ophthalmology 2006;113:792-9
- Reinstein DZ, Archer TJ, Gobbe M. Corneal epithelial thickness profile in the diagnosis of keratoconus. J Refract Surg 2009;25:604-10
- Kanellopoulos AJ, Asimellis G. Longitudinal postoperative lasik epithelial thickness profile changes in correlation with degree of myopia correction. J Refract Surg 2014;30:166-71
- Jhanji V, Yang B, Yu M, et al. Corneal thickness and elevation measurements using swept-source optical coherence tomography and slit scanning topography in normal and keratoconic eyes. Clin Experiment Ophthalmol 2013;41:735-45
- Vidal S, Viqueira V, Mas D, et al. Repeatability and reproducibility of corneal thickness using SOCT Copernicus HR. Clin Exp Optom 2013;96:278-85
- Belin MW, Litoff D, Strods SJ, et al. The PAR technology corneal topography system. Refract Corneal Surg 1992;8:88-96
- Rao SN, Raviv T, Majmudar PA, et al. Role of Orbscan II in screening keratoconus suspects before refractive corneal surgery. Ophthalmology 2002;109:1642-6
- Hashemi H, Mehravaran S. Corneal changes after laser refractive surgery for myopia: comparison of Orbscan II and Pentacam findings. J Cataract Refract Surg 2007;33:841-7
- Quisling S, Sjoberg S, Zimmerman B, et al. Comparison of Pentacam and Orbscan IIz on posterior curvature topography measurements in keratoconus eyes. Ophthalmology 2006;113:1629-32
- Chen D, Lam AK. Intrasession and intersession repeatability of the Pentacam system on posterior corneal assessment in the normal human eye. J Cataract Refract Surg 2007;33:448-54
- Salouti R, Nowroozzadeh MH, Zamani M, et al. Comparison of anterior and posterior elevation map measurements between 2 Scheimpflug imaging systems. J Cataract Refract Surg 2009;35:856-62
- Smadja D, Touboul D, Cohen A, et al. Detection of subclinical keratoconus using an automated decision tree classification. Am J Ophthalmol 2013;156:237-46
- Kamiya K, Oshika T, Amano S, et al. Influence of excimer laser photorefractive keratectomy on the posterior corneal surface. J Cataract Refract Surg 2000;26:867-71
- Kim H, Kim HJ, Joo CK. Comparison of forward shift of posterior corneal surface after operation between LASIK and LASEK. Ophthalmologica 2006;220:37-42
- Miyata K, Kamiya K, Takahashi T, et al. Time course of changes in corneal forward shift after excimer laser photorefractive keratectomy. Arch Ophthalmol 2002;120:896-900
- Wang Z, Chen J, Yang B. Posterior corneal surface topographic changes after laser in situ keratomileusis are related to residual corneal bed thickness. Ophthalmology 1999;106:406-9
- Ciolino JB, Belin MW. Changes in the posterior cornea after laser in situ keratomileusis and photorefractive keratectomy. J Cataract Refract Surg 2006;32:1426-31
- Vicente D, Clinch TE, Kang PC. Changes in posterior corneal elevation after laser in situ keratomileusis enhancement. J Cataract Refract Surg 2008;34:785-8
- Sy ME, Ramirez-Miranda A, Zarei-Ghanavati S, et al. Comparison of posterior corneal imaging before and after LASIK using dual rotating scheimpflug and scanning slit-beam corneal tomography systems. J Refract Surg 2013;29:96-101
- Kawamorita T, Uozato H, Kamiya K, et al. Repeatability, reproducibility, and agreement characteristics of rotating Scheimpflug photography and scanning-slit corneal topography for corneal power measurement. J Cataract Refract Surg 2009;35:127-33
- Reddy JC, Rapuano CJ, Cater JR, et al. Comparative evaluation of dual Scheimpflug imaging parameters in keratoconus, early keratoconus, and normal eyes. J Cataract Refract Surg 2014;40:582-92
- Kanellopoulos AJ, Asimellis G. Corneal refractive power and symmetry changes following normalization of ectasias treated with partial topography-guided PTK combined with higher-fluence CXL (the Athens Protocol). J Refract Surg 2014;30:342-6
- Wang L, Shirayama M, Kock DD. Repeatability of corneal power and wavefront aberration measurements with a dual-Scheimpflug Placido corneal topographer. J Cataract Refract Surg 2010;36:424-30
- Seitz B, Torres F, Langenbucher A, et al. Posterior corneal curvature changes after myopic laser in situ keratomileusis. Ophthalmology 2001;108:666-72
- Jain R, Dilraj G, Grewal SP. Repeatability of corneal parameters with Pentacam after laser in situ keratomileusis. Indian J Ophthalmol 2007;55:341-7
- Maldonado MJ, Nieto JC, Diez-Cuenca M, et al. Repeatability and reproducibility of posterior corneal curvature measurements by combined scanning slit and Placido-disc topography after LASIK. Ophthalmology 2006;113:1918-26
- Sonego-Krone S, Lopez-Moreno G, Beaujon-Balbi OV, et al. A direct method to measure the power of the central cornea after myopic laser in situ keratomileusis. Arch Ophthalmol 2004;122:159-66
- Srivannaboon S, Reinstein DZ, Sutton HF, et al. Accuracy of Orbscan total optical power maps in detecting refractive change after myopic laser in situ keratomileusis. J Cataract Refract Surg 1999;25:1596-9
- Cua IY, Qazi MA, Lee SF, et al. Intraocular lens calculations in patients with corneal scarring and irregular astigmatism. J Cataract Refract Surg 2003;29:1352-7
- Kim SW, Kim EK, Cho BJ, et al. Use of the pentacam true net corneal power for intraocular lens calculation in eyes after refractive corneal surgery. J Refract Surg 2009;25:285-9
- Tang Q, Hoffer KJ, Olson MD, et al. Accuracy of Scheimpflug Holladay equivalent keratometry readings after corneal refractive surgery. J Cataract Refract Surg 2009;35:1198-203
- Borasio E, Stevens J, Smith GT. Estimation of true corneal power after keratorefractive surgery in eyes requiring cataract surgery: BESSt formula. J Cataract Refract Surg 2006;32:2004-14
- Savini G, Barboni P, Carbonelli M, et al. Accuracy of a dual Scheimpflug analyzer and a corneal topography system for intraocular lens powercalculation in unoperated eyes. J Cataract Refract Surg 2011;37:72-6
- Shirayama M, Wang L, Koch DD, et al. Comparison of accuracy of intraocular lens calculations using automated keratometry, a Placido-based corneal topographer, and a combined Placido-based and dual Scheimpflug corneal topographer. Cornea 2010;29:1136-8
- Fakhry MA, Artola A, Belda JI, et al. Comparison of corneal pachymetry using ultrasound and Orbscan II. J Cataract Refract Surg 2002;28:248-52
- Wong AC, Wong CC, Yuen NS, et al. Correlational study of central corneal thickness measurements on Hong Kong Chinese using optical coherence tomography, Orbscan and ultrasound pachymetry. Eye 2002;16:715-21
- Iskander NG, Penno EA, Peters NT, et al. Accuracy of Orbscan pachymetry measurements and DHG ultrasound pachymetry in primary laser in situ keratomileusis and LASIK enhancement procedures. J Cataract Refract Surg 2001;27:681-5
- Rainer G, Findl O, Petternel V, et al. Central corneal thickness measurements with partial coherence interferometry, ultrasound, and the Orbscan system. Ophthalmology 2004;111:875-9
- Radford SW, Lim R, Salmon JF. Comparison of Orbscan and ultrasound pachymetry in the measurement of central corneal thickness. Eye 2004;18:434-6
- Menassa N, Kaufmann C, Goggin M, et al. Comparison and reproducibility of corneal thickness and curvature readings obtained by the Galilei and the Orbscan II analysis systems. J Cataract Refract Surg 2008;34:1742-7
- Al-Mezaine HS, Al-Amro SA, Kangave D, et al. Comparison between central corneal thickness measurements by oculus pentacam and ultrasonic pachymetry. Int Ophthalmol 2008;28:333-8
- Fujioka M, Nakamura M, Tatsumi Y, et al. Comparison of Pentacam Scheimpflug camera with ultrasound pachymetry and noncontact specular microscopy in measuring central corneal thickness. Current Eye Res 2007;32:89-94
- Hashemi H, Mehravaran S. Central corneal thickness measurement with Pentacam, Orbscan II, and ultrasound devices before and after laser refractive surgery for myopia. Indian J Ophthalmol 2010;58:385-8
- Ladi JS, Shah NA. Comparison of central corneal thickness measurements with the Galilei dual Scheimpflug analyzer and ultrasound pachymetry. Ophthalmic Surg Lasers Imaging 2012;43:128-34
- Jahadi Hosseini HR, Katbab A, Khalili MR, et al. Comparison of corneal thickness measurements using Galilei, HR Pentacam, and ultrasound. Cornea 2010;29:1091-5
- Matsuda J, Hieda O, Kinoshita S. Comparison of central corneal thickness measurements by Orbscan II and Pentacam after corneal refractive surgery. Jpn J Ophthalmol 2008;52:245-9
- Cheng AC, Rao SK, Tang E, et al. Pachymetry assessment with Orbscan II in postoperative patients with myopic LASIK. J Refract Surg 2006;22:363-6
- Boscia F, La Tegola MG, Alessio G, et al. Accuracy of Orbscan optical pachymetry in corneas with haze. J Cataract Refract Surg 2002;28:253-8
- Güler E, Yağcı R, Akyol M, et al. Repeatability and reproducibility of Galilei measurements in normal keratoconic and postrefractive corneas. Cont Lens Anterior Eye 2014;37:331-6
- Faramarzi A, Karimian F, Jafarinasab MR, et al. Central corneal thickness measurements after myopic photorefractive keratectomy using Scheimpflugimaging, scanning-slit topography, and ultrasonic pachymetry. J Cataract Refract Surg 2010;36:1543-9
- Park SH, Choi SK, Lee D, et al. Corneal thickness measurement using Orbscan, Pentacam, Galilei, and ultrasound in normal and post-femtosecond laser in situ keratomileusis eyes. Cornea 2012;31:978-82
- Dutta D, Rao HL, Addepalli UK, et al. Corneal thickness in keratoconus: comparing optical, ultrasound, and optical coherence tomography pachymetry. Ophthalmology 2013;120:457-63
- Rocha KM, Perez-Straziota CE, Stulting RD, et al. SD-OCT analysis of regional epithelial thickness profiles in keratoconus, postoperative corneal ectasia, and normal eyes. J Refract Surg 2013;29:173-9
- Kanellopoulos AJ, Aslanides IM, Asimellis G. Correlation between epithelial thickness in normal corneas, untreated ectatic corneas, and ectatic corneas previously treated with CXL; is overall epithelial thickness a very early ectasia prognostic factor? Clin Ophthalmol 2012;6:789-800