Validity of pachymetric measurements by manipulating the acoustic factor of Orbscan II

Eye and Contact Lens

Volumn 32, Issue 2, 2006, Pages 78-83

  Lu, Fenghe ^a   Simpson, Trefford ^a   Fonn, Desmond ^a   Sorbara, Luigina ^a   Jones, Lyndon ^a  

^a UNIVERSITY OF WATERLOO   (Canada)

Author keywords

Acoustic factor; Corneal edema; Corneal thickness; Optical coherence tomography; Orbscan II

Indexed keywords

ADULT; ANALYTICAL EQUIPMENT; ANALYTICAL PARAMETERS; ARTICLE; CALCULATION; CHRONOLOGY; CLINICAL ARTICLE; CONTACT LENS; CONTROLLED STUDY; CORNEA EDEMA; CORNEA THICKNESS; CORRELATION ANALYSIS; DEVICE REMOVAL; FEMALE; GAS PERMEABILITY; HUMAN; MALE; MEASUREMENT; OPTICAL COHERENCE TOMOGRAPHY; PACHOMETRY; PRIORITY JOURNAL; SLEEP; STANDARD; STATISTICAL ANALYSIS; STATISTICAL SIGNIFICANCE; VALIDITY; CORNEA; INSTRUMENTATION; MIDDLE AGED; MORPHOMETRICS; MYOPIA; PATHOLOGY; REPRODUCIBILITY; VALIDATION STUDY; VISUAL SYSTEM EXAMINATION;

ADULT; BODY WEIGHTS AND MEASURES; CONTACT LENSES; CORNEA; CORNEAL EDEMA; DIAGNOSTIC TECHNIQUES, OPHTHALMOLOGICAL; FEMALE; HUMANS; MALE; MIDDLE AGED; MYOPIA; REPRODUCIBILITY OF RESULTS; TOMOGRAPHY, OPTICAL COHERENCE;

EID: 33645825833     PISSN: 15422321     EISSN: None     Source Type: Journal    
DOI: 10.1097/01.icl.0000174760.95482.9c     Document Type: Article

References (43)

1. Feng Y, Varikooty J, Simpson TL. Diurnal variation of corneal and corneal epithelial thickness measured using optical coherence tomography. Cornea 2001;20:480-483.
2. Auffarth GU, Wang L, Volcker HE. Keratoconus evaluation using the Orbscan Topography System. J Cataract Refract Surg 2000;26:222-228.
3. Cohen SR, Polse KA, Brand RJ, et al. Humidity effects on corneal hydration. Invest Ophthalmol Vis Sci 1990;31:1282-1287.
4. Lattimore MR Jr. Influence of extended soft contact lens wear on the comparative measurement of central corneal thickness. Acta Ophthalmol Scand 1996;74:239-242.
5. 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;106:406-410.
6. Chakrabarti HS, Craig JP, Brahma A, et al. Comparison of corneal thickness measurements using ultrasound and Orbscan slit-scanning topography in normal and post-LASIK eyes. J Cataract Refract Surg 2001;27:1823-1828.
7. Wang J, Fonn D, Simpson TL, et al. The measurement of corneal epithelial thickness in response to hypoxia using optical coherence tomography. Am J Ophthalmol 2002;133:315-319.
8. Wang J, Fonn D, Simpson TL. Topographical thickness of the epithelium and total cornea after hydrogel and PMMA contact lens wear with eye closure. Invest Ophthalmol Vis Sci 2003;44:1070-1074.
9. Prisant O, Calderon N, Chastang P, et al. Reliability of pachymetric measurements using Orbscan after excimer refractive surgery. Ophthalmology 2003;110:511-515.
10. Iskander NG, Anderson Penno E, 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;27:681-685.
11. Wang J, Fonn D, Simpson TL, et al. Topographical thickness of the epithelium and total cornea after overnight wear of reverse-geometry rigid contact lenses for myopia reduction. Invest Ophthalmol Vis Sci 2003;44:4742-4746.
12. Giessler S, Duncker GI. Orbscan pachymetry after LASIK is not reliable. J Refract Surg 2001;17:385-387.
13. Fakhry MA, Artola A, Belda JI, et al. Comparison of corneal pachymetry using ultrasound and Orbscan II. J Cataract Refract Surg 2002;28:248-252.
14. Arntz A, Duran JA, Pijoan JI. [Subclinical keratoconus diagnosis by elevation topography]. Arch Soc Esp Oftalmol 2003;78:659-664.
15. Rao SN, Raviv T, Majmudar PA, et al. Role of Orbscan II in screening keratoconus suspects before refractive corneal surgery. Ophthalmology 2002;109:1642-1646.
16. Randleman JB, Russell B, Ward MA, et al. Risk factors and prognosis for corneal ectasia after LASIK. Ophthalmology 2003;110:267-275.
17. Doughty MJ, Zaman ML. Human corneal thickness and its impact on intraocular pressure measures: a review and meta-analysis approach. Surv Ophthalmol 2000;44:367-408.
18. Doughty MJ, Laiquzzaman M, Muller A, et al. Central corneal thickness in European (white) individuals, especially children and the elderly, and assessment of its possible importance in clinical measures of intra-ocular pressure. Ophthalmic Physiol Opt 2002;22:491-504.
19. Efron N, Mutalib HA, Perez-Gomez I, et al. Confocal microscopic observations of the human cornea following overnight contact lens wear. Clin Exp Optom 2002;85:149-155.
20. 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;16:715-721.
21. Gonzalez-Meijome JM, Cervino A, Yebra-Pimentel E, et al. Central and peripheral corneal thickness measurement with Orbscan II and topographical ultrasound pachymetry. J Cataract Refract Surg 2003;29:125-132.
22. du Toit R, Vega JA, Fonn D, et al. Diurnal variation of corneal sensitivity and thickness. Cornea 2003;22:205-209.
23. 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;83:774-778.
24. Marsich MW, Bullimore MA. The repeatability of corneal thickness measures. Cornea 2000;19:792-795.
25. Yaylali V, Kaufman SC, Thompson HW. Corneal thickness measurements with the Orbscan Topography System and ultrasonic pachymetry. J Cataract Refract Surg 1997;23:1345-1350.
26. Izatt JA, Hee MR, Swanson EA, et al. Micrometer-scale resolution imaging of the anterior eye in vivo with optical coherence tomography. Arch Ophthalmol 1994;112:1584-1589.
27. Suzuki S, Oshika T, Oki K, et al. Corneal thickness measurements: scanning-slit corneal topography and noncontact specular microscopy versus ultrasonic pachymetry. J Cataract Refract Surg 2003;29:1313-1318.
28. Wang J, Fonn D, Simpson TL, et al. Relation between optical coherence tomography and optical pachymetry measurements of corneal swelling induced by hypoxia. Am J Ophthalmol 2002;134:93-98.
29. York D. Least-squares fitting of a straight line. Can J Phys 1966;44:1079-1086.
30. Edelhauser H, Ubels JL. The cornea and the sclera. In: Kaufman P, Alm A, eds. Adler's Physiology of the Eye, 10th ed. St. Louis, Mosby, 2003, pp 47-114.
31. Kikkawa Y, Hirayama K. Uneven swelling of the corneal stroma. Invest Ophthalmol 1970;9:735-741.
32. Edelhauser HF, Ubels JL. Physiology. In: Smolin G, Thoft R, eds. The Cornea, 3rd ed. Toronto, Little Brown,1994, pp 25-47.
33. Wang J, Simpson TL, Fonn D. Objective measurements of corneal light-backscatter during corneal swelling, by optical coherence tomography. Invest Ophthalmol Vis Sci 2004;45:3493-3498.
34. Kim YL, Walsh JT Jr, Goldstick TK, et al. Variation of corneal refractive index with hydration. Phys Med Biol 2004;49:859-868.
35. Cristol SM, Edelhauser HF, Lynn MJ. A comparison of corneal stromal edema induced from the anterior or the posterior surface. Refract Corneal Surg 1992;8:224-229.
36. Nissen J, Hjortdal JO, Ehlers N, et al. A clinical comparison of optical and ultrasonic pachometry. Acta Ophthalmol (Copenh) 1991;69:659-663.
37. Shih CY, Graff Zivin JS, Trokel SL, et al. Clinical significance of central corneal thickness in the management of glaucoma. Arch Ophthalmol 2004;122:1270-1275.
38. Brandt JD. The influence of corneal thickness on the diagnosis and management of glaucoma. J Glaucoma 2001;10(5 suppl 1):S65-S67.
39. Li Q, Li M, Fan Z, et al. The influence of central corneal thickness and corneal curvature and axial length on the measurement of intraocular pressure. Yan Ke Xue Bao 2002;18:176-180.
40. Duch S, Serra A, Castanera J, et al. Tonometry after laser in situ keratomileusis treatment. J Glaucoma 2001;10:261-265.
41. Emara B, Probst LE, Tingey DP, et al. Correlation of intraocular pressure and central corneal thickness in normal myopic eyes and after laser in situ keratomileusis. J Cataract Refract Surg 1998;24:1320-1325.
42. Mandell RB, Fatt I. Thinning of the human cornea on awakening. Nature 1965;208:292-293.
43. Mertz GW. Overnight swelling of the living human cornea. J Am Optom Assoc 1980;51:211-214.