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Related Experiment Videos

Contact diode laser cyclo-photocoagulation for refractory glaucoma. A pilot study

M W Ulbig1, D McHugh, A McNaught

  • 1Moorfields Eye Hospital, London, UK.

German Journal of Ophthalmology
|August 1, 1994
PubMed
Summary

Contact diode cyclo-photocoagulation effectively lowers intra-ocular pressure in refractory glaucoma patients. While offering significant ocular hypotensive action, this method may cause more side effects than non-contact treatments.

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Area of Science:

  • Ophthalmology
  • Medical Technology

Background:

  • Refractory glaucoma presents a significant challenge in intra-ocular pressure management.
  • Non-contact diode cyclo-photocoagulation has shown promise, but direct energy delivery may enhance efficacy.

Purpose of the Study:

  • To evaluate the efficacy and safety of contact diode cyclo-photocoagulation for refractory glaucoma.
  • To compare the outcomes with existing non-contact methods.

Main Methods:

  • A trial involving 12 patients with refractory glaucoma.
  • Application of diode laser (810 nm, up to 2 W, 2 s duration) via a contact probe and fiber-optic system.
  • Treatment involved a mean of 22 pulses per eye.

Main Results:

  • Significant reduction in mean intra-ocular pressure from 42.3 to 13.6 mmHg over 3 months.

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  • Four patients required retreatment.
  • Adverse events included hyphaema, anterior fibrinous uveitis, and pupil block in three patients.

    • Conclusions:

    • Contact diode cyclo-photocoagulation demonstrates potent ocular hypotensive effects in refractory glaucoma.
    • The contact modality may lead to more pronounced non-therapeutic side effects compared to non-contact methods.