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Needling versus medical treatment in encapsulated blebs. A randomized, prospective study
V P Costa1, M M Correa, N Kara-Jose
1Department of Ophthalmology, University of Campinas (UNICAMP), Brazil.
Ophthalmology
|August 1, 1997
Summary
Medical treatment is more effective than transconjunctival needling for encapsulated blebs after glaucoma surgery. Initial medical management is recommended, reserving needling for refractory cases to improve intraocular pressure control.
Area of Science:
- Ophthalmology
- Glaucoma Research
- Surgical Outcomes
Background:
- Encapsulated blebs can complicate guarded filtration procedures for glaucoma.
- Effective management is crucial to maintain intraocular pressure (IOP) control.
Purpose of the Study:
- To compare the efficacy and safety of transconjunctival needling versus medical treatment for encapsulated blebs.
- To determine the optimal initial management strategy for this complication.
Main Methods:
- A randomized prospective study involving 25 eyes with encapsulated blebs.
- Eyes were randomized to receive either transconjunctival needling or medical treatment with aqueous humor suppressants.
- Treatment success was defined by IOP below 20 mmHg, with crossover allowed if initial treatment failed.
Main Results:
- Medical treatment achieved a 90.9% success rate compared to 7.1% for needling alone (P = 0.00003).
- Needling often required adjunctive medical treatment (92.9%) and resulted in more subsequent glaucoma surgeries (35.7%).
- No significant difference in the number of medications was observed between groups post-intervention.
Conclusions:
- Initial medical treatment, potentially including digital pressure, is the preferred approach for encapsulated blebs.
- Transconjunctival needling should be reserved for cases unresponsive to medical therapy due to its invasiveness and higher complication rates.