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Scleral Cross-linking Using Riboflavin and Ultraviolet-A Radiation for Prevention of Axial Myopia in a Rabbit Model

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Late Reverse Pupillary Block After Scleral Fixation With Yamane Technique: A Case Report.

Maria J Chaves-Samaniego^1,2, Gunjan Awatramani², Nazimul Hussain¹

¹Ophthalmology Department, Mediclinic Parkview Hospital, Dubai, UAE.

Case Reports in Ophthalmological Medicine

|December 31, 2025

Summary

This summary is machine-generated.

Late complications of the Yamane technique, a sutureless intraocular lens (IOL) fixation, can include reverse pupillary block and recurrent IOL subluxation. Careful surgical technique and patient selection are crucial for minimizing risks.

Keywords:

Yamane floppy iris syndrome lens subluxation reverse pupillary block scleral fixation

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Area of Science:

Ophthalmology
Surgical Techniques
Intraocular Lenses

Background:

The Yamane technique offers sutureless scleral fixation of intraocular lenses (IOLs) for eyes lacking capsular support.
While generally safe and effective, rare late complications like IOL subluxation have been documented.

Purpose of the Study:

To describe a rare case of late-onset reverse pupillary block and recurrent IOL subluxation after Yamane fixation.
To identify potential contributing factors and emphasize preventative measures.

Main Methods:

Presentation of a clinical case involving a 64-year-old male who underwent Yamane IOL fixation.
Details of surgical interventions including pars plana vitrectomy and IOL repositioning.
Analysis of intraoperative findings and long-term follow-up.

Main Results:

The patient developed cystoid macular edema, a macular hole, and iris capture with pupillary block five years post-Yamane fixation.
Multiple episodes of IOL subluxation occurred, necessitating repeated repositioning and laser iridotomy.
IOL stability was achieved at 18-month follow-up after final repositioning, with controlled intraocular pressure.

Conclusions:

This case underscores the potential for late reverse pupillary block and recurrent IOL subluxation following Yamane technique.
Factors such as optic-haptic junction stress, iris instability, and scleral tunnel issues may contribute to complications.
Emphasizes the importance of meticulous surgical technique, appropriate case selection, and diligent patient monitoring.