Advanced bilateral glaucoma decades after first-generation Fyodorov ‘collar-button’ anterior–posterior phakic intraocular lens implantation: a case report and clinical management considerations - Report - MDSpire

Advanced bilateral glaucoma decades after first-generation Fyodorov ‘collar-button’ anterior–posterior phakic intraocular lens implantation: a case report and clinical management considerations

  • By

  • Monika Sarnat-Kucharczyk

  • Anna Hitnarowicz

  • Aleksandra Ziemba

  • Dorota Pojda-Wilczek

  • Ewa Mrukwa-Kominek

  • Sudi Patel

  • May 4, 2026

  • 0 min

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Clinical Report: Bilateral Advanced Glaucoma Following Long-Term pIOL Implantation

Overview

This report details a case of advanced glaucomatous optic neuropathy in a patient with a history of bilateral implantation of first-generation phakic intraocular lenses (pIOLs). The successful management of elevated intraocular pressure (IOP) through micropulse trans-scleral cyclophotocoagulation (MP-TSCPC) is highlighted.

Background

Phakic intraocular lenses (pIOLs) are utilized to correct high refractive errors but can lead to long-term complications such as glaucoma and cataract formation. The management of elevated IOP in these patients poses significant challenges, often necessitating surgical intervention. Understanding the risks associated with early-generation pIOLs is crucial for preventing severe complications.

Data Highlights

ParameterRight Eye (RE)Left Eye (LE)
Corrected Distance Visual Acuity (CDVA)0.91.0
Corrected Near Visual Acuity (CNVA)0.50.5
Intraocular Pressure (IOP) at Presentation26 mmHg24 mmHg
IOP Post-MP-TSCPC16 mmHgN/A

Key Findings

  • A 45-year-old male developed advanced glaucomatous optic neuropathy 25 years post bilateral pIOL implantation.
  • Initial IOP readings were 26 mmHg in the RE and 24 mmHg in the LE, indicating elevated pressure.
  • Despite pharmacological treatment, IOP remained elevated, prompting the use of MP-TSCPC in the RE.
  • Post-MP-TSCPC, IOP decreased to 16 mmHg in the RE, demonstrating effective management.
  • Electrophysiological examinations aided in the differential diagnosis of optic neuropathies in complex cases.

Clinical Implications

Healthcare professionals should maintain a high index of suspicion for glaucoma in patients with a history of pIOL implantation, especially those with long-term follow-up. Early detection and intervention are critical to prevent irreversible optic nerve damage. MP-TSCPC may serve as a viable treatment option for managing refractory IOP in these patients.

Conclusion

This case underscores the importance of long-term monitoring in patients with pIOLs to mitigate the risk of severe complications such as glaucoma. Timely intervention can significantly improve patient outcomes.

References

  1. Glaucoma Physician, 2021 -- A Case of a Young Man With Angle Closure Glaucoma, Plateau Iris, and Pilocarpine Intolerance
  2. Corneal Physician, 2023 -- Placing “Piggyback” Pinhole Implants
  3. Retinal Physician, 2022 -- Management of the Dislocated Lens
  4. Glaucoma Physician, 2021 -- Management of Glaucoma Following Cataract Surgery in Children
  5. Academy of Asia-Pacific Professors of Ophthalmology, 2025 -- Controversy and Consensus on Posterior Chamber Phakic Intraocular Lens
  6. European Glaucoma Society, 2026 -- Advancing glaucoma care: What's new in the 6th edition of the European Glaucoma Society guidelines
  7. ScienceDirect, 2025 -- Micropulse versus Slow Coagulation Transscleral Cyclophotocoagulation in Refractory Glaucoma: A Randomized Clinical Trial
  8. Controversy and Consensusconsensus on Posterior Chamber Phakic Intraocular Lensposterior chamber phakic intraocular lens for the Correctioncorrection of Myopiamyopia and Myopic Astigmatismmyopic astigmatism in Healthy Phakic Eyeshealthy phakic eyes by the Academyacademy of Asia-Pacific Professors of Ophthalmology (AAPPO) and the Asia-Pacific Myopia Society (APMS) - Proof Central
  9. Advancing glaucoma care: What's new in the 6th edition of the European Glaucoma Society guidelines - Marta Pazos, Carlo E Traverso, Ananth Viswanathan, Augusto Azuara-Blanco, Luis Abegão Pinto, Ingeborg Stalmans, 2026
  10. Micropulse versus Slow Coagulation Transscleral Cyclophotocoagulation in Refractory Glaucoma: A Randomized Clinical Trial - ScienceDirect

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