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J.M. Paulin, E.O. Graue, R. Velazquez, A. Haber, T. Ramirez, R. Suarez; Modifications In Optical Aberrations Induced By Corneal In Flap In Lasik . Invest. Ophthalmol. Vis. Sci. 2006;47(13):57.
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To determine the modifications in the optical aberrations induced by the corneal flap in LASIK.
Prospective interventional study. Thirteen patients who were going to be somitted to LASIK surgery were included. A wave front analysis was realized before the procedure. After the corneal flap was made, it was repositioned and another wavefront analysis was done. Once the study was completed, the flap was lifted so the corneal ablation could be aplied, completing the procedure
Twenty five eyes were studied. A clinically significant increase in the spherical aberration was observed (pre: 0.17 ± 0.15, post: 0.32 ± 0.19; p 0.002). A clinically significant increase in the root mean Square RMS for a 3 mm pupil was also observed (pre: 0.26 ± 0.13, post: 0.90 ± 0.99; p 0.007). The aberrometer suggested refraction was not statistically significant modified by the corneal flap.
The corneal flap creation induces an statistically significant increase in the spherical aberration without modifying the refractive error.
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