Wavefront-guided laser epithelial keratomileusis with the wavelight concept system 500

Area of Science:

• Ophthalmology
• Refractive Surgery
• Corneal Surgery

Background:

• Laser Epithelial Keratomileusis (LASEK) is a refractive surgery for myopia.
• Conventional refractive surgery can induce higher-order aberrations.
• Wavefront-guided ablation aims to reduce these induced aberrations.

Purpose of the Study:

• To evaluate the efficacy of wavefront-guided LASEK retreatment in patients with visual problems in ambient light.
• To assess the reduction of higher-order aberrations after LASEK retreatment.
• To improve contrast vision and correct night vision issues post-excimer laser surgery.

Main Methods:

• Twenty patients underwent LASEK retreatment using the Camellin technique with 20% EtOH.
• Wavefront-guided ablation was performed using the WaveLight Concept System 500.
• Preoperative and 6-month postoperative comprehensive examinations assessed refraction and aberrations (RMS values).

Main Results:

• All LASEK retreatments were completed without complications.
• Patients reported significant improvement in vision.
• Postoperative refraction improved, and RMS values, including fourth-order RMS and spherical aberration, decreased significantly.

Conclusions:

• Wavefront-guided LASEK retreatment effectively reduces higher-order aberrations.
• This technique improves contrast vision and addresses night vision problems after prior excimer laser surgery.
• Retreatment with wavefront-guided LASEK shows potential for correcting residual refractive errors and visual disturbances.