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Updated: Mar 12, 2026

Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity
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Visual Outcomes After LASIK Using Topography-Guided vs Wavefront-Guided Customized Ablation Systems.

Ikuko Toda, Takeshi Ide, Teruki Fukumoto

    Journal of Refractive Surgery (Thorofare, N.J. : 1995)
    |November 9, 2016
    PubMed
    Summary

    Wavefront-guided LASIK showed milder subjective symptoms and better contrast sensitivity than topography-guided LASIK. Both customized ablation systems offer excellent visual outcomes, but wavefront guidance may enhance vision quality.

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    Area of Science:

    • Ophthalmology
    • Refractive Surgery
    • Corneal Surgery

    Background:

    • Laser-assisted in situ keratomileusis (LASIK) utilizes customized ablation profiles.
    • Wavefront-guided (WFG) and topography-guided (TG) ablation are two such advanced techniques.
    • Evaluating their comparative visual performance is crucial for optimizing patient outcomes.

    Purpose of the Study:

    • To compare the visual performance of WFG ablation versus TG ablation in LASIK.
    • To assess subjective visual symptoms and objective visual function post-LASIK.

    Main Methods:

    • A prospective, randomized clinical study involving 68 eyes of 35 patients undergoing LASIK.
    • Patients were randomized into WFG (iDesign/STAR S4 IR) or TG (OPD-Scan/EC-5000 CXII) ablation groups.
    • Visual function and subjective symptoms were compared preoperatively and at 1 and 3 months post-LASIK.

    Main Results:

    • WFG group reported significantly milder subjective symptoms at 3 months.
    • Higher contrast sensitivity with glare was observed in the WFG group at low spatial frequencies.
    • No significant differences were found in visual acuity, refraction, or higher-order aberrations between groups.

    Conclusions:

    • Both WFG and TG LASIK systems demonstrate excellent predictability and visual function.
    • WFG ablation may offer superior quality of vision.
    • System selection should consider individual eye conditions, particularly higher-order aberrations.