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Capsule excision after failed Molteno surgery

J Välimäki1, A Tuulonen, P J Airaksinen

  • 1Department of Ophthalmology, University of Oulu, Finland.

Ophthalmic Surgery and Lasers
|May 1, 1997
PubMed
Summary

Surgical excision of encapsulated Molteno blebs effectively lowers intraocular pressure (IOP) in refractory glaucoma patients. This procedure offers a viable alternative for eyes with severe damage and multiple prior surgeries.

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Area of Science:

  • Ophthalmology
  • Glaucoma Surgery
  • Ophthalmic Implants

Background:

  • Refractory glaucoma often requires surgical intervention.
  • Molteno implantation is a surgical option for advanced glaucoma.
  • Encapsulated blebs can form after glaucoma surgery, potentially compromising outcomes.

Purpose of the Study:

  • To assess the incidence of scar tissue formation requiring surgery after Molteno implantation.
  • To evaluate the efficacy of encapsulated bleb excision in managing refractory glaucoma.

Main Methods:

  • Retrospective analysis of 95 eyes from 79 patients undergoing single-stage Molteno implantation.
  • Identification of 14 eyes that developed encapsulated blebs requiring intervention.
  • Definition of surgical success as final intraocular pressure (IOP) between 6-22 mm Hg with reduced or unchanged medication.

Main Results:

  • A mean follow-up of 30 months was recorded.
  • Bleb excision significantly reduced mean IOP from 35.2 mmHg preoperatively to 19.7 mmHg postoperatively (P < .001).
  • The overall conventional success rate following bleb excision was 75%.

Conclusions:

  • Excision of encapsulated Molteno blebs is an effective surgical option.
  • This procedure provides a valuable alternative for eyes with severe damage and prior surgical failures.
  • It can lead to significant IOP reduction in complex glaucoma cases.

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