Corneal ray tracing versus simulated keratometry for estimating corneal power changes after excimer laser surgery

Journal of Cataract and Refractive Surgery

Volumn 40, Issue 7, 2014, Pages 1109-1115

  Savini, Giacomo ^a,f   Calossi, Antonio ^b   Camellin, Massimo ^c   Carones, Francesco ^d   Fantozzi, Marco ^e   Hoffer, Kenneth J ^g  

^a Studio Oculistico d'Azeglio   (Italy)

^b UNIVERSITY OF FLORENCE   (Italy)

^c Sekal Microchirurgia Rovigo   (Italy)

^d Carones Ophthalmology Center   (Italy)

^e Studio Oculistico Fantozzi ^*  (Italy)

^f WENZHOU MEDICAL UNIVERSITY   (China)

^g UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ADULT; ARTICLE; CORNEA TOPOGRAPHER; CORNEAL POWER MEASUREMENT; CORNEAL RAY TRACING; HUMAN; HYPERMETROPIA; KERATOMETRY; KERATOMILEUSIS; LASER EPITHELIAL KERATOMILEUSIS; MAJOR CLINICAL STUDY; MEAN PUPIL POWER; MULTICENTER STUDY; MYOPIA; OPHTHALMIC EXCIMER LASER; PHOTOREFRACTIVE KERATECTOMY; POSTOPERATIVE PERIOD; PREOPERATIVE EVALUATION; PRIORITY JOURNAL; REFRACTION INDEX; RETROSPECTIVE STUDY; CLINICAL TRIAL; COMPARATIVE STUDY; COMPUTER SIMULATION; CORNEA; EVALUATION STUDY; EXCIMER LASER; EYE REFRACTION; FEMALE; HYPEROPIA; MALE; PATHOPHYSIOLOGY; PHYSIOLOGY; PROCEDURES; THERAPEUTIC USE; VISUAL ACUITY;

ADULT; COMPUTER SIMULATION; CORNEA; CORNEAL SURGERY, LASER; CORNEAL TOPOGRAPHY; FEMALE; HUMANS; HYPEROPIA; LASERS, EXCIMER; MALE; MYOPIA; REFRACTION, OCULAR; RETROSPECTIVE STUDIES; VISUAL ACUITY;

EID: 84903134220     PISSN: 08863350     EISSN: 18734502     Source Type: Journal    
DOI: 10.1016/j.jcrs.2013.11.032     Document Type: Article

References (41)

1. G. Savini, P. Barboni, M. Carbonelli, and K.J. Hoffer Accuracy of corneal power measurements by a new Scheimpflug camera combined with Placido-disk corneal topography for intraocular lens power calculation in unoperated eyes J Cataract Refract Surg 38 2012 787 792
2. T. Olsen Sources of error in intraocular lens power calculation J Cataract Refract Surg 18 1992 125 129
3. B. Seitz, A. Langenbucher, N.X. Nguyen, M.M. Kus, and M. Küchle Underestimation of intraocular lens power for cataract surgery after myopic photorefractive keratectomy Ophthalmology 106 1999 693 702
4. P. Hugger, T. Kohnen, F.A. La Rosa, J.T. Holladay, and D.D. Koch Comparison of changes in manifest refraction and corneal power after photorefractive keratectomy Am J Ophthalmol 129 2000 68 75
5. L. Wang, D.W. Jackson, and D.D. Koch Methods of estimating corneal refractive power after hyperopic laser in situ keratomileusis J Cataract Refract Surg 28 2002 954 961
6. M. Camellin, and A. Calossi A new formula for intraocular lens power calculation after refractive corneal surgery J Refract Surg 22 2006 187 199
7. E.F. Jarade, F.C. Abi Nader, and K.F. Tabbara Intraocular lens power calculation following LASIK: determination of the new effective index of refraction J Refract Surg 22 2006 75 80
8. G. Savini, P. Barboni, and M. Zanini Correlation between attempted correction and keratometric refractive index of the cornea after myopic excimer laser surgery J Refract Surg 23 2007 461 466
9. J.T. Holladay Consultations in refractive surgery [comment] Refract Corneal Surg 5 1989 203
10. H.J. Shammas, M.C. Shammas, A. Garabet, J.H. Kim, A. Shammas, and L. LaBree Correcting the corneal power measurements for intraocular lens power calculations after myopic laser in situ keratomileusis Am J Ophthalmol 136 2003 426 432
11. B. Seitz, and A. Langenbucher Intraocular lens power calculation in eyes after corneal refractive surgery J Refract Surg 16 2000 349 361
12. L. Speicher Intra-ocular lens calculation status after corneal refractive surgery Curr Opin Ophthalmol 12 2001 17 29
13. G. Savini, P. Barboni, and M. Zanini Intraocular lens power calculation after myopic refractive surgery; theoretical comparison of different methods Ophthalmology 113 2006 1271 1282
14. S.T. Awwad, C. Manasseh, R.W. Bowman, H.D. Cavanagh, S. Verity, V. Mootha, and J.P. McCulley Intraocular lens power calculation after myopic laser in situ keratomileusis: estimating the corneal refractive power J Cataract Refract Surg 34 2008 1070 1076
15. W. Haigis Intraocular lens calculation after refractive surgery for myopia: Haigis-L formula J Cataract Refract Surg 34 2008 1658 1663
16. L. Wang, M.A. Booth, and D.D. Koch Comparison of intraocular lens power calculation methods in eyes that have undergone LASIK Ophthalmology 111 2004 1825 1831
17. M. Saiki, K. Negishi, N. Kato, R. Ogino, H. Arai, I. Toda, M. Dogru, and K. Tsubota Modified double-K method for intraocular lens power calculation after excimer laser corneal refractive surgery J Cataract Refract Surg 39 2013 556 562
18. P.R. Layman Measuring corneal area utilizing keratometry Optician 154 1987 261
19. R.B. Mandell Contact Lens Practice 4th ed. 1988 Charles C. Thomas Springfield, IL 107 135
20. Y. Liu, Y. Wang, Z. Wang, and T. Zuo Effects of error in radius of curvature on the corneal power measurement before and after laser refractive surgery for myopia Ophthalmic Physiol Opt 32 2012 355 361
21. G. Savini, M. Carbonelli, P. Barboni, and K.J. Hoffer Clinical relevance of radius of curvature error in corneal power measurements after excimer laser surgery J Cataract Refract Surg 36 2010 82 86
22. J.T. Holladay, and J.A. Janes Topographic changes in corneal asphericity and effective optical zone after laser in situ keratomileusis J Cataract Refract Surg 28 2002 942 947
23. S. Sónego-Krone, G. López-Moreno, O.V. Beaujon-Balbi, C.G. Arce, P. Schor, and M. Campos A direct method to measure the power of the central cornea after myopic laser in situ keratomileusis Arch Ophthalmol 122 2004 159 166 Available at: http://archopht.jamanetwork.com/data/Journals/OPHTH/ 9919/ECS30036.pdf Accessed February 18, 2014
24. G. Savini, K.J. Hoffer, M. Carbonelli, and P. Barboni Scheimpflug analysis of corneal power changes after myopic excimer laser surgery J Cataract Refract Surg 39 2013 605 610
25. L. Wang, A.M. Mahmoud, B.L. Anderson, D.D. Koch, and C.J. Roberts Total corneal power estimation: ray tracing method versus Gaussian optics formula Invest Ophthalmol Vis Sci 52 2011 1716 1722 Available at: http://www.iovs.org/ content/52/3/1716.full.pdf Accessed February 18, 2014
26. G.R. Mello, C.J. Roberts, D. Smadja, C.C. Serpe, R.R. Krueger, and M.R. Santhiago Comparison of keratometric changes after myopic ablation: ray tracing versus simulated keratometry J Refract Surg 29 2013 604 610
27. G. Savini, P. Barboni, M. Carbonelli, and K.J. Hoffer Repeatability of automatic measurements by a new Scheimpflug camera combined with Placido topography J Cataract Refract Surg 37 2011 1809 1816
28. M. Camellin, and S. Arba Mosquera Simultaneous aspheric wavefront-guided transepithelial photorefractive keratectomy and phototherapeutic keratectomy to correct aberrations and refractive errors after corneal surgery J Cataract Refract Surg 36 2010 1173 1180
29. D. Machin, M.J. Campbell, S.-B. Tan, and S.-H. Tan Sample Size Tables for Clinical Studies 3rd ed. 2009 John Wiley & Sons Ltd Chichester, UK
30. R.A. Armstrong Statistical guidelines for the analysis of data obtained from one or both eyes Ophthalmic Physiol Opt 33 2013 7 14 Available at: http://onlinelibrary.wiley.com/doi/10.1111/opo.12009/pdf Accessed February 18, 2014
31. J.M. Bland, and D.G. Altman Statistical methods for assessing agreement between two methods of clinical measurement Lancet 1 1986 307 310 Available at: http://www-users.york.ac.uk/∼mb55/meas/ba.pdf Accessed February 18, 2014
32. J.M. Bland, and D.G. Altman Measuring agreement in method comparison studies Stat Methods Med Res 8 1999 135 160
33. K.J. Hoffer Intraocular lens power calculation after previous laser refractive surgery J Cataract Refract Surg 35 2009 759 765
34. A. Calossi, and M. Camellin Comparison of methods for IOL power calculation after incisional and photoablative refractive surgery A. Garg, J.T. Lin, R. Latkany, J. Bovet, W. Haigis, Mastering the Techniques of IOL Power Calculations 2nd ed 2009 Jaypee Brothers New Delhi, India 184 204
35. A. Calossi The Optical Quality of the Cornea 2002 Fabiano Editore Canelli, Italy Available at: http://www.mendeley.com/download/public/35931/ 118865215/8268674c23188424a5075d2d9c0cf031e2b488d3 Accessed February 18, 2014
36. R.B. Mandell Corneal power correction factor for photorefractive keratectomy J Refract Corneal Surg 10 1994 125 128
37. P.G. Gobbi, F. Carones, and R. Brancato Keratometric index, videokeratography, and refractive surgery J Cataract Refract Surg 24 1998 202 211
38. J. Aramberri Intraocular lens power calculation after corneal refractive surgery: double-K method J Cataract Refract Surg 29 2003 2063 2068
39. P.-R. Preussner, J. Wahl, H. Lahdo, B. Dick, and O. Findl Ray tracing for intraocular lens calculation J Cataract Refract Surg 28 2002 1412 1419
40. C. Canovas, and P. Artal Customized eye models for determining optimized intraocular lenses power Biomed Opt Express 2 2011 1649 1662 Available at: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3114231/pdf/1649.pdf Accessed February 18, 2014
41. G. Savini, A. Bedei, P. Barboni, P. Ducoli, and K.J. Hoffer Intraocular lens power calculation by ray-tracing after myopic excimer laser surgery Am J Ophthalmol 157 2014 150 153 Available at: http://download.journals. elsevierhealth.com/pdfs/journals/0002-9394/PIIS0002939413005412.pdf Accessed February 18, 2014