Cemile Banu COŞAR YURTERİ, Ali Rıza Cenk ÇELEBİ, Asım Bozkurt ŞENER, Tansu GÖNEN, Ayşe Ebru KILAVUZOĞLU

Treatment of mixed astigmatism: early clinical outcomes with WaveLight and Technolas excimer lasers

Background/aim: We aimed to compare the results of WaveLight Allegretto Wave Eye-Q 400 Hz and Technolas 217z100 excimer lasers in the treatment of mixed astigmatism. Materials and methods: Forty-nine patients who underwent laser in situ keratomileusis for mixed astigmatism were included in this retrospective study. Twenty-eight eyes of 21 patients were treated with WaveLight and 46 eyes of 28 patients were treated with the Technolas excimer laser. The patients visual acuities and refractive values were evaluated on postoperative day 1 and at 1 and 3 months. Results: In the WaveLight and Technolas groups, cylindrical refractive errors at month 3 were 0.92 ± 0.28 D and 0.88 ± 0.46 D, respectively. Spherical equivalent values for the groups at month 3 were 0.38 ± 0.73 D and 0.33 ± 0.20 D, respectively. There was no significant difference in postoperative uncorrected distance visual acuity at month 3 between the two groups (P = 0.671). At postoperative month 3, 70% of patients treated with WaveLight and 100% of patients treated with Technolas had an uncorrected distance visual acuity of 20/25 or better (P = 0.211). Conclusion: There were no significant differences in refraction and visual acuity between the WaveLight and Technolas groups during a 3-month follow-up period after laser in situ keratomileusis for mixed astigmatism.

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1. Stonecipher KG, Kezirian GM, Stonecipher K. LASIK for mixed astigmatism using the ALLEGRETTO WAVE: 3- and 6-month results with the 200- and 400-Hz platforms. J Refract Surg 2010; 26: 819823.
2. Pinelli R, Ngassa EN, Scaffidi E. Sequential ablation approach to the correction of mixed astigmatism. J Refract Surg 2006; 22: 787794.
3. Lukenda A, Martinovic ZK, Kalauz M. Excimer laser correction of hyperopia, hyperopic and mixed astigmatism: past, present, and future. Acta Clin Croat 2012; 51: 299304.
4. Varley GA, Huang D, Rapuano CJ, Schallhorn S, Boxer Wachler BS, Sugar A; Ophthalmic Technology Assessment Committee Refractive Surgery Panel, American Academy of Ophthalmology. LASIK for hyperopia, hyperopic astigmatism, and mixed astigmatism: a report by the American Academy of Ophthalmology. Ophthalmology 2004; 111: 16041617.
5. Bahar I, Levinger E, Kaiserman I, Sansanayudh W, Rootman DS. IntraLase-enabled astigmatic keratotomy for postkeratoplasty astigmatism. Am J Ophthalmol 2008; 146: 897904.
6. 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: 779787.
7. Levinger E, Bahar I, Rootman DS. IntraLase-enabled astigmatic keratotomy for correction of astigmatism after Descemet stripping automated endothelial keratoplasty: a case report. Cornea 2009; 28: 10741076.
8. Venter J, Blumenfeld R, Schallhorn S, Pelouskova M. Nonpenetrating femtosecond laser intrastromal astigmatic keratotomy in patients with mixed astigmatism after previous refractive surgery. J Refract Surg 2013; 29: 180186.
9. Albarran-Diego C, Munoz G, Montes-Mico R, Alio JL. Bitoric laser in situ keratomileusis for astigmatism. J Cataract Refract Surg 2004; 30: 14711478.
10. De Ortueta D, Haecker C. Laser in situ keratomileusis for mixed astigmatism using a modified formula for bitoric ablation. Eur J Ophthalmol 2008; 18: 869876.
11. Rosa N, De Bernardo M, Romano MR, Scarfato G, Verdoliva F, Mastropasqua R, Lanza M. Analysis of photoastigmatic keratectomy with the cross-cylinder ablation. Indian J Ophthalmol 2012; 60: 283287.
12. Kanellopoulos AJ. Topography-guided hyperopic and hyperopic astigmatism femtosecond laser-assisted LASIK: long-term experience with the 400 Hz eye-Q excimer platform. Clin Ophthalmol 2012; 6: 895901.
13. Han DC, Chen J, Htoon HM, Tan DT, Mehta JS. Comparison of outcomes of conventional WaveLight® Allegretto Wave® and Technolas® excimer lasers in myopic laser in situ keratomileusis. Clin Ophthalmol 2012; 6: 11591168.
14. Jin GJ, Merkley KH, Lyle WA. Laser in situ keratomileusis for primary and secondary mixed astigmatism. Am J Ophthalmol 2005; 139: 10191027.
15. Arbelaez MC, Aslanides IM, Barraquer C, Carones F, Feuermannova A, Neuhann T, Rozsival P. LASIK for myopia and astigmatism using the SCHWIND AMARIS excimer laser: an international multicenter trial. J Refract Surg 2010; 26: 88 98.
16. Jin GJ, Merkley KH, Lyle WA. Laser in situ keratomileusis for primary and secondary mixed astigmatism. Am J Ophthalmol 2005; 139: 10191027.
17. Alio JL, Pachkoria K, El Aswad A, Plaza-Puche AB. Laserassisted in situ keratomileusis in high mixed astigmatism with optimized, fast-repetition and cyclotorsion control excimer laser. Am J Ophthalmol 2013; 155: 829836.
18. Roszkowska AM, De Grazia L, Meduri A, Wylegala E, Aragona P. Long-term results of excimer laser procedure to correct astigmatic refractive errors. Med Sci Monit 2013; 19: 927933.
19. Khalifa M, El-Kateb M, Shaheen MS. Iris registration in wavefront-guided LASIK to correct mixed astigmatism. J Cataract Refract Surg 2009; 35: 433437.
20. Bohac M, Biscevic A, Koncarevic M, Anticic M, Gabric N, Patel S. Comparison of Wavelight Allegretto Eye-Q and Schwind Amaris 750S excimer laser in treatment of high astigmatism. Graefes Arch Clin Exp Ophthalmol 2014; 252: 16791686.