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Adjunctive mitomycin C in primary trabeculectomy in phakic eyes
T H Kupin1, M S Juzych, D H Shin
1Kresge Eye Institute, Wayne State University School of Medicine, Detroit, Michigan 48201.
American Journal of Ophthalmology
|January 1, 1995
Summary
Adding mitomycin C to primary trabeculectomy surgery for phakic eyes lowers intraocular pressure and reduces medication needs. However, this approach also increases the risk of prolonged hypotony, particularly in younger patients.
Area of Science:
- Ophthalmology
- Surgical Innovation
- Glaucoma Research
Background:
- Glaucoma filtering surgery outcomes are improved by antiproliferative agents like mitomycin C.
- High-risk eyes benefit from mitomycin C in glaucoma surgery.
- Primary trabeculectomy success rates can be enhanced with adjunctive therapies.
Purpose of the Study:
- To evaluate the efficacy of adjunctive mitomycin C in primary trabeculectomies for phakic eyes.
- To determine if mitomycin C increases the success rate of initial glaucoma filtering surgery.
- To assess the impact of mitomycin C on intraocular pressure and medication use in phakic primary open-angle glaucoma.
Main Methods:
- A comparative study of phakic primary open-angle glaucoma patients undergoing primary trabeculectomy.
- Mitomycin C group received subconjunctival mitomycin C (0.5 mg/ml for three minutes).
- Comparison with a historical control group that did not receive antifibrotic agents.
Main Results:
- Mitomycin C group showed significantly lower postoperative intraocular pressure at 6, 12, and 18 months.
- Fewer postoperative medications were required in the mitomycin C group.
- A higher incidence of prolonged hypotony was observed in the mitomycin C group (15% vs 0%).
- Younger age was linked to a higher rate of persistent hypotony.
Conclusions:
- Adjunctive subconjunctival mitomycin C improves primary trabeculectomy success in phakic eyes by reducing intraocular pressure and medication needs.
- The use of mitomycin C is associated with an increased risk of prolonged hypotony.
- Careful patient selection, considering age, may be necessary when using mitomycin C in primary trabeculectomy.