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Micropulse versus continuous wave transscleral diode cyclophotocoagulation in refractory glaucoma: a randomized

Maria Cecilia D Aquino1, Keith Barton, Anna Marie W T Tan

  • 1Department of Ophthalmology, National University Hospital, National University Health System, Singapore.

Clinical & Experimental Ophthalmology
|May 10, 2014
PubMed
Summary

Micropulse diode transscleral cyclophotocoagulation showed superior efficacy and safety for refractory glaucoma compared to continuous wave. Micropulse offers a more predictable intraocular pressure reduction with fewer complications.

Keywords:
ciliary bodyglaucomalaser surgery

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Area of Science:

  • Ophthalmology
  • Glaucoma Treatment
  • Surgical Innovation

Background:

  • Refractory glaucoma presents a significant challenge in intraocular pressure (IOP) management.
  • Transscleral cyclophotocoagulation (TSCPC) is an established treatment for advanced glaucoma.
  • Comparing different modalities of TSCPC is crucial for optimizing patient outcomes.

Purpose of the Study:

  • To compare the efficacy and safety of micropulse versus continuous wave diode transscleral cyclophotocoagulation.
  • To evaluate the long-term outcomes of these two TSCPC methods in patients with refractory glaucoma.

Main Methods:

  • A randomized, comparative, exploratory study was conducted in a tertiary hospital.
  • Forty-eight patients with refractory, end-stage glaucoma were randomized to either micropulse or continuous wave TSCPC.
  • Outcomes including IOP, visual acuity, medication use, and complications were monitored for 18 months.

Main Results:

  • Micropulse TSCPC achieved a higher success rate at 12 months (75% vs. 29%, P < 0.01) compared to continuous wave.
  • Both methods significantly reduced mean IOP by 45% over 18 months, with no significant difference between groups.
  • Continuous wave TSCPC was associated with a higher rate of ocular complications (P = 0.01).

Conclusions:

  • Both micropulse and continuous wave diode TSCPC are effective in lowering IOP in refractory glaucoma.
  • Micropulse TSCPC demonstrates a more consistent and predictable IOP-lowering effect.
  • Micropulse TSCPC offers a favorable safety profile with fewer ocular complications.