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JJ Stein, AI Miller, DJ Pettinelli, A Kanellopoulos; Initial Clinical Experience With the Wavelight ALLEGRETTO-WAVE Excimer Laser in 287 Consecutive Myopic Eyes Treated With LASIK . Invest. Ophthalmol. Vis. Sci. 2002;43(13):2034.
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Purpose: To evaluate the safety and efficacy of the use of the Allegretto excimer laser (Wavelight, Germany) in LASIK. Methods: 287 consecutive eyes, underwent LASIK for myopia or myopic astigmatism with the Allegetto laser. This laser treats by a gaussian-profile flying-spot of 0.9mm, with 200Hz frequency and a 250Hz active eye-tracker. We evaluated amount of myopia and astigmatism, pre- and post-operative UCVA and BCVA, IOP, endothelial cell count and wavefront analysis by the Wavelight Tscherning aberrometer. We utilized the Amadeus (Allergan, CA) and the M2 (Moria, France) microkeratomes. Mean follow-up was 5-11 months (8) Results: Mean values: The mean pre-operative sphere was - 4.75 D (-1.00 to -12.50) and the cylinder -1.25 (-0.25 to -3.75) UCVA improved from 20/200 to 20/25. At 3 months 87% of the eyes were 20/20, 47% 20/15 and 32% 20/10. 100% of eye were within +/- 1D at 3 months. Wavefront analysis showed a postoperative increase in coma of only 35% (mean coma of 6% pre-op to 9% post-op) No complications were noted in this limited group. Conclusion: LASIK utilizing the ALLEGRETTO-WAVE excimer laser with a 0.9mm flying-spot and 200Hz frequency appears to be safe and effective in the correction of myopic astigmatism. The postoperative results at 3 months are impressive for correction and an improvement in BCVA that coincides with little induction of high order aberrations (coma).
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