Vectorial astigmatic changes after corneal collagen crosslinking in keratoconic corneas previously treated with intracorneal ring segments: A preliminary study

European Journal of Ophthalmology

Volumn 22, Issue SUPPLEMENT N. 7, 2012, Pages

  Piñero, David P ^a   Alio, Jorge L ^b,c   Klonowski, Pawel ^b   Toffaha, Bader ^b,c  

^a UNIVERSITY OF ALICANTE   (Spain)

^b Vissum Corporation ^*  (Spain)

^c MIGUEL HERNÁNDEZ UNIVERSITY   (Spain)

Author keywords

Corneal astigmatic changes crosslinking; Keratoconus

Indexed keywords

RIBOFLAVIN; COLLAGEN; CROSS LINKING REAGENT; PHOTOSENSITIZING AGENT;

ADOLESCENT; ADULT; ARTICLE; ASTIGMATISM; CHILD; CLINICAL ARTICLE; CORNEA SURGERY; CORNEAL COLLAGEN CROSSLINKING; FEMALE; FOLLOW UP; HUMAN; KERATOCONUS; KERATOPROSTHESIS; MALE; POSTOPERATIVE PERIOD; PRIORITY JOURNAL; SCHOOL CHILD; TREATMENT OUTCOME; ULTRAVIOLET A RADIATION; ABERROMETRY; CORNEA; CORNEA STROMA; EYE REFRACTION; IMPLANTATION; METABOLISM; MIDDLE AGED; MULTIMODALITY CANCER THERAPY; PATHOPHYSIOLOGY; PHYSIOLOGY; ULTRAVIOLET RADIATION; VISUAL ACUITY;

ABERROMETRY; ADOLESCENT; ADULT; ASTIGMATISM; CHILD; COLLAGEN; COMBINED MODALITY THERAPY; CORNEA; CORNEAL STROMA; CROSS-LINKING REAGENTS; FEMALE; HUMANS; KERATOCONUS; MALE; MIDDLE AGED; PHOTOSENSITIZING AGENTS; PROSTHESIS IMPLANTATION; REFRACTION, OCULAR; RIBOFLAVIN; ULTRAVIOLET RAYS; VISUAL ACUITY; YOUNG ADULT;

EID: 84863767696     PISSN: 11206721     EISSN: None     Source Type: Journal    
DOI: 10.5301/ejo.5000063     Document Type: Article

References (38)

1. Vinciguerra P, Albè E, Mahmoud AF, Trazza S, Hafezi F, Roberts CJ. Intra- and postoperative variation in Ocular Response Analyzer parameters in keratoconic eyes after corneal cross-linking. J Refract Surg 2010; 26(9): 669-76.
2. Caporossi A, Mazzotta C, Baiocchi S, Caporossi T. Longterm results of riboflavin ultraviolet a corneal collagen crosslinking for keratoconus in Italy: the Siena eye cross study. Am J Ophthalmol 2010; 149: 585-93.
3. Vinciguerra P, Albè E, Trazza S, et al. Refractive, topographic, tomographic, and aberrometric analysis of keratoconic eyes undergoing corneal cross-linking. Ophthalmology 2009; 116: 369-78.
4. Grewal DS, Brar GS, Jain R, Sood V, Singla M, Grewal SP. Corneal collagen crosslinking using riboflavin and ultraviolet- A light for keratoconus: one-year analysis using Scheimpflug imaging. J Cataract Refract Surg 2009; 35: 425-32.
5. Kanellopoulos AJ. Collagen cross-linking in early keratoconus with riboflavin in a femtosecond laser-created pocket: initial clinical results. J Refract Surg 2009; 25: 1034-7.
6. Coskunseven E, Jankov MR II, Hafezi F. Contralateral eye study of corneal collagen cross-linking with riboflavin and UVA irradiation in patients with keratoconus. J Refract Surg 2009; 25: 371-6.
7. Raiskup-Wolf F, Hoyer A, Spoerl E, Pillunat LE. Collagen crosslinking with riboflavin and ultraviolet-A light in keratoconus: longterm results. J Cataract Refract Surg 2008; 34: 796-801.
8. Wittig-Silva C, Whiting M, Lamoureux E, Lindsay RG, Sullivan LJ, Snibson GR. A randomized controlled trial of corneal collagen cross-linking in progressive keratoconus: preliminary results. J Refract Surg 2008; 24: S720-5.
9. Wollensak G, Spoerl E, Seiler T. Riboflavin/ultraviolet-a-induced collagen crosslinking for the treatment of keratoconus. Am J Ophthalmol 2003; 135: 620-7.
10. Spoerl E, Wollensak G, Seiler T. Increased resistance of crosslinked cornea against enzymatic digestion. Curr Eye Res 2004; 29: 35-40.
11. Piñero DP, Alió JL, Barraquer RI, Michael R, Jiménez R. Corneal biomechanics, refraction, and corneal aberrometry in keratoconus: an integrated study. Invest Ophthalmol Vis Sci 2010; 51: 1948-55.
12. Alpins NA. Astigmatism analysis by the Alpins method. J Cataract Refract Surg 2001; 27: 31-49.
13. Alpins NA. A new method of analyzing vectors for changes in astigmatism. J Cataract Refract Surg 1993; 19: 524-33.
14. Piñero DP, Alió JL, Teus MA, Barraquer RI, Michael R, Jiménez R. Modification and refinement of astigmatism in keratoconic eyes with intrastromal corneal ring segments. J Cataract Refract Surg 2010; 36: 1562-72.
15. Hoffart L, Proust H, Matonti F, Conrath J, Ridings B. Correction of postkeratoplasty astigmatism by femtosecond laser compared with mechanized astigmatic keratotomy. Am J Ophthalmol 2009; 147: 779-87.
16. Wang L, Misra M, Koch DD. Peripheral corneal relaxing incisions combined with cataract surgery. J Cataract Refract Surg 2003; 29: 712-22.
17. Gan D, Zhou X, Dai J, et al. Outcomes of epi-LASIK for the correction of high myopia and myopic astigmatism after more than 1 year. Ophthalmologica 2009; 223: 102-10.
18. Alpins N, Stamatelatos G. Clinical outcomes of laser in situ keratomileusis using combined topography and refractive wavefront treatments for myopic astigmatism. J Cataract Refract Surg 2008; 34: 1250-9.
19. Febbraro JL, Aron-Rosa D, Gross M, Aron B, Brémond-Gignac D. One year clinical results of photoastigmatic refractive keratectomy for compound myopic astigmatism. J Cataract Refract Surg 1999; 25: 911-20.
20. Alpins NA, Taylor HR, Kent DG, et al, The Melbourne Excimer Laser Group. Three multizone photorefractive keratectomy algorithms for myopia. J Refract Surg 1997; 13: 535-44.
21. Taylor HR, Guest CS, Kelly P, Alpins NA; The Excimer Laser and Research Group. Comparison of excimer laser treatment of astigmatism and myopia. Arch Ophthalmol 1993; 111: 1621-6.
22. Morcillo-Laiz R, Zato MA, Muñoz-Negrete FJ, Arnalich-Montiel F. Surgically induced astigmatism after biaxial phacoemulsification compared to coaxial phacoemulsification. Eye 2009; 23: 835-9.
23. Galway G, Drury B, Cronin BG, Bourke RD. A comparison of induced astigmatism in 20- vs 25-gauge vitrectomy procedures. Eye 2010; 24: 315-7.
24. Mountford J, Pesudovs K. An analysis of the astigmatic changes induced by accelerated orthokeratology. Clin Exp Optom 2002; 85: 284-93.
25. Raasch TW, Schechtman KB, Davis LJ, Zadnik K; CLEK Study Group. Collaborative Longitudinal Evaluation of Keratoconus Study: repeatability of subjective refraction in myopic and keratoconic subjects: results of vector analysis. Ophthalmic Physiol Opt 2001; 21: 376-83.
26. Rabinowitz YS. Keratoconus. Surv Ophthalmol 1998; 42: 297-319.
27. Piñero DP, Alió JL, Barraquer RI, Michael R. Corneal biomechanical changes following intracorneal ring segment implantation in keratoconus. Cornea 2012; 31: 491-9.
28. Ortiz D, Piñero D, Shabayek MH, Arnalich-Montiel F, Alió JL. Corneal biomechanical properties in normal, post-laser in situ keratomileusis, and keratoconic eyes. J Cataract Refract Surg 2007; 33: 1371-5.
29. Luce DA. Determining in vivo biomechanical properties of the cornea with an ocular response analyzer. J Cataract Refract Surg 2005; 31: 156-62.
30. Alpins NA. Vector analysis of astigmatism changes by flattening, steepening, and torque. J Cataract Refract Surg 1997; 23: 1503-14.
31. Kling S, Remón L, Pérez-Escudero A, Merayo-Lloves J, Marcos S. Corneal biomechanical changes after collagen cross-linking from porcine eye inflation experiments. Invest Ophthalmol Vis Sci 2010; 51: 3961-8.
32. Wollensak G, Iomdina E. Biomechanical and histological changes after corneal crosslinking with and without epithelial debridement. J Cataract Refract Surg 2009; 35: 540-6.
33. McMonnies CW, Boneham GC. Corneal responses to intraocular pressure elevations in keratoconus. Cornea 2010; 29: 764-70.
34. Goldich Y, Barkana Y, Morad Y, Hartstein M, Avni I, Zadok D. Can we measure corneal biomechanical changes after collagen cross-linking in eyes with keratoconus? A pilot study. Cornea 2009; 28: 498-502.
35. Glass DH, Roberts CJ, Litsky AS, Weber PA. A viscoelastic biomechanical model of the cornea describing the effect of viscosity and elasticity on hysteresis. Invest Ophthalmol Vis Sci 2008; 49: 3919-26.
36. Samaras K, O'Brart DP, Doutch J, Hayes S, Marshall J, Meek KM. Effect of epithelial retention and removal on riboflavin absorption in porcine corneas. J Refract Surg 2009; 25: 771-5.
37. Meek KM, Tuft SJ, Huang Y, et al. Changes in collagen orientation and distribution in keratoconus corneas. Invest Ophthalmol Vis Sci 2005; 46: 1948-56.
38. Daxer A, Fratzl P. Collagen fibril orientation in the human corneal stroma and its implication in keratoconus. Invest Ophthalmol Vis Sci 1997; 38: 121-9.