Enhancement using CIRCLE software post cornea lenticule extraction for advanced refractive correction.

Area of Science:

• Ophthalmology
• Refractive Surgery
• Corneal Surgery

Background:

• Corneal lenticular extraction (CLEAR) is used for advanced refractive correction.
• Enhancement procedures are sometimes necessary for under-correction or regression after primary CLEAR.

Purpose of the Study:

• To evaluate the visual outcomes of enhancement procedures following CLEAR using CIRCLE software.
• To assess the safety and efficacy of the CIRCLE software for retreatment.

Main Methods:

• A prospective study involving eyes requiring enhancement after CLEAR.
• CIRCLE software was used to create a flap, followed by excimer laser ablation to a plano target.
• Visual acuity and safety outcomes were analyzed at three months post-enhancement.

Main Results:

• Mean preoperative spherical equivalent was -5.04 D, with enhancement addressing a residual error of -0.86 D.
• Final manifest spherical equivalent was -0.01 D, with significant improvement in uncorrected distance visual acuity (UDVA).
• 78% of eyes achieved 20/20 or better UDVA post-enhancement, with no loss of corrected distance visual acuity (CDVA) or major complications.

Conclusions:

• CIRCLE software provides a safe and effective option for visual enhancement after CLEAR.
• This retreatment modality can successfully correct residual refractive errors and improve visual function.