February 04, 2014
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Wavefront-guided LASIK with new aberrometer effective, predictable

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Wavefront-guided myopic LASIK with a new-generation Shack-Hartmann aberrometer yielded predictable outcomes and high patient satisfaction, according to a study.

The retrospective study included 243 eyes of 126 patients who underwent primary wavefront-guided LASIK.

The iDesign Advanced WaveScan aberrometer (Abbott Medical Optics) was used to capture wavefront data. An IntraLase iFS femtosecond laser (AMO) or mechanical microkeratome was used to create LASIK flaps. Ablation was performed with the Visx Star S4 IR excimer laser (AMO).

Investigators evaluated visual acuity, refraction and patient satisfaction 1 month after surgery.

Uncorrected distance visual acuity of 20/16 or better was attained in 79% of eyes, 20/20 or better in 93.4% of eyes and 20/25 or better in 96.7% of eyes. No eyes lost two or more lines of corrected distance visual acuity and 14% of eyes gained one or more lines.

Manifest refraction decreased significantly (P < .01). Manifest spherical equivalent decreased from –3.28 D preoperatively to –0.03 D postoperatively and was within 0.5 D of the target in 93% of eyes and within 1 D in 99.6%.

Manifest astigmatism decreased from –0.72 D to –0.14 D.

Most patients (98.5%) were satisfied with outcomes.

Disclosure: Schallhorn is a consultant for Abbott Medical Optics and global medical director for Optical Express. The remaining authors have no relevant financial disclosures.