Evaluation Of Corneal Incision Architecture After Femtosecond Laser Assisted Cornea Incision In Icl Implantation.

To evaluate corneal incision architecture using anterior segment OCT after femtosecond laser assisted cornea incision in Implantable Collamer Lens (ICL) implantation surgery.

About 150,000 ICL implantations were performed in China in 2021 and the ICL implantation is still growing.Currently <10% ICL implantation are performed with femtosecond assisted cornea incision.Previous studies showed the benefits of femtosecond laser assisted cornea incision in reduction of incision related risks in cataract surgery.Evidence of the clinical performance of LenSx laser assisted cornea incision in ICL implantation surgery is needed.

A total of 48 eyes from patients who underwent ICL/TICL implantation surgery at our hospital were selected. A femtosecond laser-assisted cornea incision was performed using the LenSx system.All the incision will be 2-planed clear cornea incision, and all the location will be the same (ten o’clock position at upper side of the eye).ASOCT of incision to evaluate cornea incision architecture (percentage of occurrence of any of these 3 characteristics: endothelial misalignment, detachment of Descemet’s membrane or abnormal corneal construction) 1d post-op .ASOCT of incision to evaluate cornea incision architecture at 1w and 1m post-op .Ocular residual astigmatism (ORA) at 1m post-op

Incision-site descendent membrane detachment (DMD) was observed in 0% patients in 1-day-post-op, 1-week-post-op and 1-month-post-op. Endothelial misalignment was observed in 56.25% patients in 1-day-post-op, 10.42% patients in 1-week-post-op, and 8.33% patients in 1-month-post-op.At one-month post-op, 96% of eyes had ocular residual astigmatism ≤ 1.00D, and 71% had astigmatism ≤ 0.5D. The corneal SIA was 0.71 ± 0.39D.

Femtosecond laser assisted cornea incision in ICL implantation is a safe and feasible surgical method.While ensuring the therapeutic efficacy for patients, it allows for more precise incisions in ICL surgery and better postoperative incision healing.However, when using femtosecond laser-assisted cornea incisions, it is essential to fully consider surgically-induced astigmatism and to design the surgery in a more personalized manner based on the patient's corneal topography." This maintains the original intent and uses precise medical terms