Optimizing incision design may improve outcomes in ICL implantation
The location and design of clear corneal incisions (CCI) during implantable collamer lens (ICL) implantation can subtly influence postoperative corneal astigmatism and higher-order aberrations (HOAs), according to a study.
The retrospective study included 122 eyes divided into temporal CCI (75 eyes) and superior CCI (47 eyes) groups.
Measurements of corneal astigmatism and HOAs were conducted using a Pentacam HR analyzer, while CCI morphology was assessed with anterior segment optical coherence tomography (AS-OCT). Key parameters included incision width (Angle-W), length (IL), incision angles (Angle-En/Ex), and the incision’s distance from the corneal apex (Dis-En/Ex).
Results showed that both groups achieved satisfactory safety and efficacy postoperatively. The temporal CCI group had longer Dis-En and Dis-Ex values, while the superior CCI group demonstrated a wider Angle-W. Anterior and posterior corneal SIA were similar between groups, but anterior SIA in the superior CCI group correlated significantly with Dis-En and Dis-Ex. Temporal CCI increased Z (3, 1), while superior CCI elevated Z (3, 3), with CCI morphology influencing corneal Z (4, -4) and Z (4, 4) in the superior CCI group.
Reference
Wang J, He X, He Q, et al. Effects of clear corneal incision location and morphology on corneal surgically induced astigmatism and higher-order aberrations after ICL V4c implantation. Front Med (Lausanne). 2024;11:1491901. doi: 10.3389/fmed.2024.1491901. PMID: 39568735; PMCID: PMC11576198.
