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Suture fixation technique for a single-piece foldable closed-loop intraocular lens.

Park CH, Lee SJ - Korean J Ophthalmol (2008)

Bottom Line: This new surgical technique was performed in seven patients.The clinical outcomes were encouraging.It is conceivable that better stabilization can be achieved by the broad arc of distal haptic-tissue contact, in addition to suture fixation, using our surgical technique with the C-flex IOL.

View Article: PubMed Central - PubMed

Affiliation: Department of Ophthalmology, Soonchunhyang University Hospital, Seoul, Korea.

ABSTRACT

Purpose: We describe a suture fixation technique for a single-piece foldable acrylic closed-loop intraocular lens (IOL) (C-flex, Rayner).

Methods: In our experimental model analyzing the stability of acrylic haptics, we confirmed that the IOL could be in counterpoise without tilt using only a two-point fixation. This new surgical technique was performed in seven patients.

Results: The unique haptic design allows easy and secure suture fixation. The clinical outcomes were encouraging.

Conclusions: It is conceivable that better stabilization can be achieved by the broad arc of distal haptic-tissue contact, in addition to suture fixation, using our surgical technique with the C-flex IOL.

Show MeSH
Schematic drawing of a C-flex™ IOL with wide haptic-optic junctions (3 mm in length). Point A is colored in green and point B is colored in blue.
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Figure 1: Schematic drawing of a C-flex™ IOL with wide haptic-optic junctions (3 mm in length). Point A is colored in green and point B is colored in blue.

Mentions: Based on reports regarding the mean diameter of the ciliary sulcus,9,10 the scale of the Vernier calipers was adjusted to 11.0 mm. We selected point A and point B on the IOL as suture placement sites (Fig. 1). Point A is a classical suture placement site because it is on the longest diameter of the haptic spread (12 mm). We used Point B as a novel suture placement site for this study because the tapered configuration presented an ideal location for attaching the suture. The diameter of the haptic spread at point B was 10 mm. A 10-0 polypropylene (Prolene®) suture was placed at either point A or point B on each haptic, and the free ends of the sutures were fixed to the cylindrical bar. The IOL behaved differently because of a difference in the distances between the cylindrical bars and the suture fixation sites. In cases with placement of the suture at point A, the outer haptics were slightly compressed inward. In contrast, in cases with placement of the suture at point B, the outer haptics were separated from the bar. However, the IOL could be fixed in a counterpoise without significant tilt in both cases without reference to the haptic-bar contact (Fig. 2). We hypothesized that a broad-based (3 mm) haptic design could maximize the stability of the haptic-optic junction. Suture fixation of the C-flex™ IOL was performed after informed consent was obtained from the seven patients in the study.


Suture fixation technique for a single-piece foldable closed-loop intraocular lens.

Park CH, Lee SJ - Korean J Ophthalmol (2008)

Schematic drawing of a C-flex™ IOL with wide haptic-optic junctions (3 mm in length). Point A is colored in green and point B is colored in blue.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2629918&req=5

Figure 1: Schematic drawing of a C-flex™ IOL with wide haptic-optic junctions (3 mm in length). Point A is colored in green and point B is colored in blue.
Mentions: Based on reports regarding the mean diameter of the ciliary sulcus,9,10 the scale of the Vernier calipers was adjusted to 11.0 mm. We selected point A and point B on the IOL as suture placement sites (Fig. 1). Point A is a classical suture placement site because it is on the longest diameter of the haptic spread (12 mm). We used Point B as a novel suture placement site for this study because the tapered configuration presented an ideal location for attaching the suture. The diameter of the haptic spread at point B was 10 mm. A 10-0 polypropylene (Prolene®) suture was placed at either point A or point B on each haptic, and the free ends of the sutures were fixed to the cylindrical bar. The IOL behaved differently because of a difference in the distances between the cylindrical bars and the suture fixation sites. In cases with placement of the suture at point A, the outer haptics were slightly compressed inward. In contrast, in cases with placement of the suture at point B, the outer haptics were separated from the bar. However, the IOL could be fixed in a counterpoise without significant tilt in both cases without reference to the haptic-bar contact (Fig. 2). We hypothesized that a broad-based (3 mm) haptic design could maximize the stability of the haptic-optic junction. Suture fixation of the C-flex™ IOL was performed after informed consent was obtained from the seven patients in the study.

Bottom Line: This new surgical technique was performed in seven patients.The clinical outcomes were encouraging.It is conceivable that better stabilization can be achieved by the broad arc of distal haptic-tissue contact, in addition to suture fixation, using our surgical technique with the C-flex IOL.

View Article: PubMed Central - PubMed

Affiliation: Department of Ophthalmology, Soonchunhyang University Hospital, Seoul, Korea.

ABSTRACT

Purpose: We describe a suture fixation technique for a single-piece foldable acrylic closed-loop intraocular lens (IOL) (C-flex, Rayner).

Methods: In our experimental model analyzing the stability of acrylic haptics, we confirmed that the IOL could be in counterpoise without tilt using only a two-point fixation. This new surgical technique was performed in seven patients.

Results: The unique haptic design allows easy and secure suture fixation. The clinical outcomes were encouraging.

Conclusions: It is conceivable that better stabilization can be achieved by the broad arc of distal haptic-tissue contact, in addition to suture fixation, using our surgical technique with the C-flex IOL.

Show MeSH