Retreatment using LASIK, PRK, or ICL for myopic regression after corneal laser refractive surgery

Area of Science:

• Ophthalmology
• Refractive Surgery
• Corneal Surgery

Background:

• Myopic regression after laser-assisted in situ keratomileusis (LASIK) or photorefractive keratectomy (PRK) is a common concern.
• Retreatment options include repeat LASIK, PRK, or implantable collamer lens (ICL) implantation.

Purpose of the Study:

• To evaluate the outcomes of retreatment for myopic regression following primary LASIK or PRK.
• To identify factors associated with pre-retreatment refractive error.

Main Methods:

• Retrospective cross-sectional study of 158 eyes undergoing retreatment (LASIK, PRK, or ICL).
• Outcomes assessed included uncorrected (UDVA) and corrected (CDVA) distance visual acuity, mean spherical equivalent (MRSE), and safety/efficacy indices.
• Analysis of baseline factors and pre-retreatment MRSE associations.

Main Results:

• Significant visual acuity and refractive error improvements were observed across all retreatment groups (LASIK, PRK, ICL).
• Efficacy and safety indices were favorable (near or above 1.0).
• Longer intervals since primary surgery were linked to greater myopic regression; baseline characteristics showed mild correlation with pre-retreatment MRSE.

Conclusions:

• Retreatment for myopic regression using LASIK, PRK, or ICL is safe and effective, yielding stable visual outcomes at 6-12 months.
• Myopic regression is multifactorial, with longer intervals between refractive surgeries being a significant predictor.