J Korean Ophthalmol Soc.  2011 Feb;52(2):157-162.

Long-Term Changes in Tilt, Decentration and Anterior Chamber Depth After Implantable Collamer Lens Insertion

• Chung YW
• Byun YS
• Chung SK

Abstract

PURPOSE
To evaluate the stability of implantable collamer lens (ICL, Staar Surgical AG, Niau, Switzerland) by comparing changes of tilt, decentration and anteroir chamber depth after ICL implantation during 1 year.
METHODS
The results of 8 high myopic patients (16 eyes) that had received ICL implantation were retrospectively studied. Tilt and decentration of ICL were measured using an anterior eye segment analysis system (Scheimpflug camera, EAS-1000, Nidek, Japan). Anterior chamber depth was measured in both eyes preoperatively and postoperatively by Scheimpflug camera. The follow-up period was 1 year.
RESULTS
Tilt was 1.90 +/- 1.23degrees, 1.75 +/- 0.80degrees, 1.64 +/- 0.86degrees, 2.08 +/- 1.33degrees (p = 0.36) and decentration were 0.04 +/- 0.01 mm, 0.03 +/- 0.01 mm, 0.03 +/- 0.02 mm, 0.04 +/- 0.02 mm (p = 0.59) at 1 week, 1 month, 6 months and 1 year respectively. Tilt and decentration showed no significant change after ICL implantation. The average anterior chamber depth was 2.85 +/- 0.26 mm preoperatively, and 2.17 +/- 0.39 mm, 2.06 +/- 0.31 mm, 2.06 +/- 0.34 mm, 2.04 +/- 0.35 mm at 1 week, 1 month, 6 months and 1 year respectively. Anterior chamber depth became narrow after ICL implantation (p = 0.02), but showed no significant narrowing postoperatively (p = 0.08).
CONCLUSIONS
The IOL position remained stable, with no significant changes for an extended period of tilt, decentration, or anterior chamber depth after ICL implantation.

Keyword

Anterior chamber depth; Decentration; Implantable collamer lens; Tilt

MeSH Terms

Anterior Chamber
Anterior Eye Segment
Eye
Follow-Up Studies
Humans
Retrospective Studies

Figure

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  Figure 1. Measuring tilt and decentration of implantable collamer lens (ICL) based on Scheimpflug image.

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  Figure 2. Changes in refractive power (spherical equivalent) after ICL implantation in patients with high myopia.

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  Figure 3. Changes in anterior chamber depth (mm) before and after ICL implantation in high myopic patients.

Reference

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