Clinical Report: Evaluation of Cionni Ring versus Yamane Method for IOL Placement

Overview

This study compares the anatomical and functional outcomes of intraocular lens (IOL) implantation using the Cionni ring versus the Yamane method in pediatric patients with lens subluxation due to Marfan syndrome. Both techniques demonstrated significant visual improvement with similar IOL tilt and infrequent decentration events.

Background

Lens subluxation in pediatric patients, particularly due to Marfan syndrome, poses significant management challenges. Approximately 50-80% of Marfan syndrome cases present with ectopia lentis, necessitating effective surgical interventions to ensure optimal visual development. The choice of surgical technique is critical, as it impacts long-term IOL stability and patient outcomes.

Data Highlights

Key Findings

• Both Cionni ring and Yamane techniques achieved significant visual improvement in pediatric patients.
• IOL tilt was similar between the two techniques (Cionni ~1.3°, Yamane ~0.8°; p=0.24).
• Decentration events were infrequent, with 4 in the Cionni group and 3 in the Yamane group.
• No major intraoperative complications were reported for either technique.
• Postoperative complications included retinal pathology and glaucoma, with 2 cases each in the Yamane group.

Clinical Implications

Surgeons should consider both the Cionni ring and Yamane techniques for IOL implantation in pediatric patients with Marfan syndrome, as both methods yield favorable outcomes. Careful patient selection and surgical technique are essential to minimize complications and ensure long-term stability of the IOL.

Conclusion

Both the Cionni ring and Yamane methods are effective for IOL placement in pediatric patients with lens subluxation due to Marfan syndrome, providing significant visual improvements and comparable anatomical outcomes.

References

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