Customized Ablations in LASIK With TopoLink

Abstract

Customized ablations by using corneal topography (TopoLink; Bausch & Lomb Surgical Technolas, Munich, Germany) can be used to treat corneal irregularities and showed promise in the treatment of decentered and small optical zones after refractive surgery. Therefore, we conducted a prospective study to evaluate the use of TopoLink laser in situ keratomileusis (LASIK) in previously untreated eyes. One hundred and fourteen patients (eyes) with myopia of -1 to -6 diopter (D) (low myopia group), and 89 patients (eyes) with myopia of -6.10 to -12 D (high myopia group) were treated. LASIK was performed by using the Hansatome Microkeratome and the Keracor 217 spot-scanning excimer laser (Bausch & Lomb Surgical Technolas, Munich, Germany). Individual ablation patterns were calculated based on elevation data obtained with the Orbscan II corneal topography system (Bausch & Lomb Surgical, Irvine, CA). Three months after surgery, 96.1% (75%) in the low (high) myopia group were within +/-0.50 D of emmetropia, and un-corrected visual acuity was 20/20 or better in 82.4% (62.5%). Spectacle-corrected visual acuity in the low myopia group improved from 5.9% seeing 20/12.5 or better preoperatively to 13.7% seeing 20/12.5 or better at 3 months, and from 37.3% seeing 20/15 or better preoperatively to and 47.1% at 3 months, respectively. Our results indicate that customized LASIK with the TopoLink is effective and could possibly improve spectacle-corrected visual acuity in myopia of —1 to -6D