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D Epstein, P Vinciguerra, F Camesasca; Compound Ablation for Myopia: Testing the Validity of a New Surgical Strategy . Invest. Ophthalmol. Vis. Sci. 2002;43(13):2069.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose: To evaluate the treatment of myopia with a new ablation strategy, which purports to achieve a lower postoperative spherical aberration than standard procedures. Methods: The compound treatment consisted of first performing a myopic ablation with a magnitude 25% higher than the preoperative sphere, and then following immediately with a hyperopic ablation with the correction set at 25% of the preoperative sphere. Four patients in which one eye was treated with the compound ablation technique and the fellow eye with standard myopic ablation were studied. LASIK was performed with the Nidek EC 5000 excimer laser. The mean preoperative spherical equivalent (SE) was -4.75D±0.71D and -4.45D±1.25D, respectively. Minimum follow-up time was 3 months. Results: Three months postoperatively, the mean SE was plano±0.74D and -0.19D±0.38D, respectively. There was no significant difference between the means. However, all compound treatments resulted in persistent central islands with significant optical aberrations. Subjectively, all patients preferred the standard ablation eye. Conclusion: The compound ablation hypothesis, claiming to attain lower spherical aberration after excimer myopia correction than standard ablation profiles, could not be confirmed. All standard myopic treatments resulted in better topographical indices and higher patient satisfaction.
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