Related Experiment Videos
Effect of the concentration and duration of application of mitomycin C in trabeculectomy
A Neelakantan1, B S Rao, L Vijaya
1Vision Research Foundation, Madras, India.
Abstract:
Ninety-three consecutive trabeculectomies in which mitomycin C (MMC) was applied intraoperatively, either at a concentration of 0.5 mg/mL for 5 minutes (n = 48) or at a concentration of 0.4 mg/mL for 3 minutes (n = 45), were reviewed to determine whether there was a significant difference between the two groups in terms of intraocular pressure (IOP) control and the incidence of complications. Preoperative and postoperative IOPs in the two groups did not differ significantly (P = .817 and .131, respectively). The 5-minute group had a higher incidence of serous choroidal detachments (P = .001). The incidence of postoperative hypotony and filtration failure with uncontrolled IOP in the two groups did not significantly differ (P = .177 and .582, respectively). Thus, intraoperative application of MMC at a concentration of 0.4 mg/mL for 3 minutes controlled postoperative IOP as effectively as MMC at a concentration of 0.5 mg/mL for 5 minutes, with a significantly lower incidence of choroidal detachments.
Insights
A study comparing two mitomycin C (MMC) concentrations for glaucoma surgery found that a lower concentration (0.4 mg/mL for 3 minutes) effectively controlled intraocular pressure (IOP) with fewer complications like choroidal detachments.
Area of Science:
- Ophthalmology
- Surgical Innovation
- Glaucoma Management
Background:
- Trabeculectomy is a common surgical procedure for glaucoma.
- Mitomycin C (MMC) is frequently used during trabeculectomy to enhance filtration and reduce scarring.
- Optimizing MMC application is crucial for balancing efficacy and safety.
Purpose of the Study:
- To compare the efficacy and safety of two different intraoperative mitomycin C (MMC) application protocols during trabeculectomy.
- To determine if a shorter, lower-concentration MMC application is as effective as a longer, higher-concentration application in controlling intraocular pressure (IOP).
- To assess the incidence of complications, specifically serous choroidal detachments and hypotony, between the two MMC regimens.
Main Methods:
- A retrospective review of 93 consecutive trabeculectomies utilizing intraoperative mitomycin C (MMC).
- Two MMC groups were compared: 0.5 mg/mL for 5 minutes (n=48) versus 0.4 mg/mL for 3 minutes (n=45).
- Intraocular pressure (IOP) control and complication rates (hypotony, filtration failure, choroidal detachments) were analyzed.
Main Results:
- No significant difference in preoperative or postoperative IOP between the two MMC groups (P=.817 and P=.131).
- The 0.5 mg/mL for 5 minutes group showed a significantly higher incidence of serous choroidal detachments (P=.001).
- Incidence of hypotony and filtration failure did not differ significantly between groups (P=.177 and P=.582).
Conclusions:
- Intraoperative mitomycin C (MMC) at 0.4 mg/mL for 3 minutes provides comparable IOP control to 0.5 mg/mL for 5 minutes.
- The reduced MMC concentration and duration significantly lowers the risk of serous choroidal detachments.
- This suggests a potentially safer and equally effective protocol for MMC use in trabeculectomy.