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E.L. Graue, R. Suárez, A. Sánchez-Navarro, B. Méndez-Noble; Conductive Keratoplasty for Hyperopia after LASIK . Invest. Ophthalmol. Vis. Sci. 2003;44(13):2575.
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Purpose:To evaluate the results of conductive keratoplasty (CK) for the correction of residual hyperopia after LASIK. Similar to thermokeratoplasty and holmium, CK corrects hyperopia by shrinkage of collagen fibers. CK uses a intrastromal tip that introduces high frecuency current to the corneal stroma without causing necrosis,or corrneal melting. Methods:In a prospective study CK was performed to patients with hyperopia at 9 months after LASIK. 12 eyes with residual or consecutive hyperopia were included in the study and treated according with our own nomogram. Visual acuity (VA), refraction, keratometry, digital topography, pachimetry and cellular density were evaluated up to 3 years postoperatively Results:At 3 years of follow up, 12 hyperopic eyes with mean hyperopic defect of +2.83 +/- 0.87 D and less than 1.00 D of cylinder, accomplished a visual acuity of 20/30 or better. At three years of follow up the mean spherical equivalent was -0.50 D. After six months of the postoperative period subjective refraction stability showed mild variations up to 0.07 D. Vectorial analysis showed an average induced astigmatism at 3 years of .34 D. Al patients gained two or more lines of vision. No significant endothelial cell loss was recorded. Conclusions:CK is a good option for correcting residual hyperopia post LASIK, it has good efficiency, stability, predictability and safety after three months postop. Main advantages of this procedure includes: Avoidance of the central optical zone previously treated, respect of the paracentral corneal thickness, eliminate the possibility of descentrations and increase of the central optical zone. Key words: conductive keratoplasty, efficiency, stability, predictability and safety.
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