Repeatability of corneal parameters with Pentacam after laser in situ keratomileusis

Indian Journal of Ophthalmology

Volumn 55, Issue 5, 2007, Pages 341-347

  Jain, Rajeev ^a   Dilraj, Grewal ^a   Grewal, Satinder Pal Singh ^a  

^a Grewal Eye Institute   (India)

Author keywords

Corneal curvature; Pachymetry; Pentacam; Post LASIK; Repeatability

Indexed keywords

EID: 34547898746     PISSN: 03014738     EISSN: 03014738     Source Type: Journal    
DOI: 10.4103/0301-4738.33819     Document Type: Article

References (29)

1. Barkana Y, Gerber Y, Elbaz U, Schwartz S, Ken-Dror G, Avni I, et al. Central corneal thickness measurement with the Pentacam Scheimpflug system, optical low-coherence reflectometry pachymeter and ultrasound pachymetry. J Cataract Refract Surg 2005;31:1729-35.
2. Lackner B, Schmidinger G, Skorpik C. Validity and repeatability of anterior chamber depth measurements with pentacam and orbscan. Optom Vis Sci 2005;82:858-61.
3. O'Donnell C, Maldonado-Codina C. Agreement and repeatability of central thickness measurement in normal corneas using ultrasound pachymetry and the OCULUS Pentacam. Cornea 2005;24:920-4.
4. Iskander NG, Anderson Penno E, Peters NT, Gimbel HV, Ferensowicz M. Accuracy of Orbscan pachymetry measurements and DGH ultrasound pachymetry in primary laser in situ keratomileusis and LASIK enhancement procedures. J Cataract Refract Surg 2001;27:681-5.
5. Prisant O, Calderon N, Chastang P, Gatinel D, Hoang-Xuan T. Reliability of pachymetric measurements using Orbscan after excimer refractive surgery. Ophthalmology 2003;110:511-5.
6. Miyata K, Tokunaga T, Nakahara M, Ohtani S, Nejima R, Kiuchi T, et al. Residual bed thickness and corneal forward shift after laser in situ keratomileusis. J Cataract Refract Surg 2004;30:1067-72.
7. Maruoka S, Nawa Y, Masuda K, Ueda T, Hara Y, Uozato H. Underestimation of corneal thickness by orbscan after myopic correction. J Cataract Refract Surg 2005;31:1854.
8. British Standards Institution. Accuracy (trueness and precision) of measurement methods and results: General principles and definitions. HMO: London; 1994. BS ISO 5725 part 1.
9. British Standards Institution. Accuracy (trueness and precision) of measurement methods and results: Basic methods for the determination of repeatability and reproducibility of a standard easurement method. HMO: London; 1994. BS ISO 5725 part 2.
10. Bland JM, Altman DG. Statistical methods for assessing agreement between two methods of clinical measurement. Lancet 1986;1:307-10.
11. Liu Z, Huang AJ, Pflugfelder SC. Evaluation of corneal thickness and topography in normal eyes using the Orbscan corneal topography system. Br J Ophthalmol 1999;83:774-8.
12. Iskander NG, Peters NT, Penno EA, Gimbel HV. Postoperative complications in laser in situ keratomileusis. Curr Opin Ophthalmol 2000;11:273-9.
13. nd ed. Slack: Thorofare, NJ; 2001. p. 93-116.
14. Chakrabarti HS, Craig JP, Brahma A, Malik TY, McGhee CN. Comparison of corneal thickness measurements using ultrasound and Orbscan slit-scanning topography in normal and post-LASIK eyes. J Cataract Refract Surg 2001;27:1823-8.
15. Miyata K. Reply to letter by ACK Cheng. J Cataract Refract Surg 2004;30:2251-2.
16. Nawa Y, Masuda K, Ueda T, Hara Y, Uozato H. Evaluation of apparent ectasia of posterior surface of the cornea after keratorefractive surgery. J Cataract Refract Surg 2005;31:571-3.
17. Boscia F, La Tegola MG, Alessio G, Sborgia C. Accuracy of Orbscan optical pachymetry in corneas with haze. J Cataract Refract Surg 2002;28:253-8.
18. Snook RK. Pachymetry and true topography using the Orbscan system. In: Gills JP, Sanders DR, editors. Corneal topography; the State of the Art. Slack Inc: Thorofare, NJ; 1995. p. 89-103.
19. Sanchis-Gimeno JA, Lleo-Perez A, Casanova J, Alonso L, Rahhal SM. Inter-observer variability of central corneal thickness measurements using non-contact specular microscopy after laser in situ keratomileusis. Clin Exp Optom 2004;87:15-8.
20. Kawana K, Tokunaga T, Miyata K, Okamoto F, Kiuchi T, Oshika T. Comparison of corneal thickness measurements using Orbscan II, non-contact specular microscopy and ultrasonic pachymetry in eyes after laser in situ keratomileusis. Br J Ophthalmol 2004;88:466-8.
21. Nishimura R, Negishi K, Saiki M, Arai H, Shimizu S, Toda I, et al. No forward shifting of posterior corneal surface in eyes undergoing LASIK. Ophthalmology 2007;114:1104-10.
22. Quisling S, Sjoberg S, Zimmerman B, Goins K, Sutphin J. Comparison of Pentacam and Orbscan IIz on posterior curvature topography measurements in keratoconus eyes. Ophthalmology 2006;113:1629-32.
23. Pallikaris IG, Kymionis GD, Astyrakakis NI. Corneal ectasia induced by laser in situ keratomileusis. J Cataract Refract Surg 2001;27:1796-802.
24. Twa MD, Roberts C, Mahmoud AM, Chang JS. Response of the posterior corneal surface to laser in situ keratomileusis for myopia. J Cataract Refract Surg 2005;31:61-71.
25. 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;106:406-10.
26. Baek TM, Lee KH, Kagaya F, Tomidokoro A, Amano S, Oshika T. Factors affecting the forward shift of posterior corneal surface after laser in situ keratomileusis. Ophthalmology 2001;108:317-20.
27. Cairns G, Ormonde SE, Gray T, Hadden OB, Morris T, Ring P, et al. Assessing the accuracy of Orbscan II post-LASIK: Apparent keratectasia is paradoxically associated with anterior chamber depth reduction in successful procedures. Clin Experiment Ophthalmol 2005;33:147-52.
28. Du ZY, Zhang DY, Zheng Q, Chen Y, Guo H, Yin HM. An analysis of measurement error in Orbscan topography system. Zhonghua Yan Ke Za Zhi 2003;39:36-40.
29. Lam AK, Chan R, Woo GC, Pang PC, Chiu R. Intra-observer and inter-observer repeatability of anterior eye segment analysis system EAS-1000) in anterior chamber configuration. Ophthalmic Physiol Opt 2002;22:552-9.