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Abstract #10181 Published in IGR 6-1
Effect of temporal corneal phacoemulsification on intraocular pressure in eyes with prior trabeculectomy with an antimetabolite
Swamynathan K; Capistrano AP; Cantor LB; WuDunn DOphthalmology 2004; 111: 674-678
OBJECTIVE: To evaluate the effect of temporal corneal phacoemulsification on intraocular pressure (IOP) in eyes after primary trabeculectomy with intraoperative fluorouracil (5-FU) or mitomycin C (MMC). DESIGN: Retrospective case-control study. PATIENTS: Twenty-nine patients who were participants in a prospective randomized double-masked trial comparing the efficacies of intraoperative 5-FU and MMC and who underwent temporal corneal phacoemulsification after the primary trabeculectomy were matched to 29 patients enrolled in the same study who did not undergo cataract surgery. The two groups were matched for length of follow-up after the trabeculectomy and the antimetabolite used at the time of trabeculectomy. METHODS: Comparisons of IOP, visual acuity (VA), and the number of glaucoma medications were made between the two groups and within the groups at various follow-up intervals to detect any statistically significant differences. MAIN OUTCOME MEASURES: IOP before phacoemulsification and at various times postoperatively was compared with IOP in the control group at the matched follow-up times. RESULTS: The mean of all IOP measurements beyond three months after phacoemulsification for each subject was significantly higher than the prephacoemulsification IOP (11.8 ± 4.2 versus 8.7 ± 4.5 mmHg; p = 0.00003, paired t test). In contrast, the mean IOP remained stable in the control group during the equivalent time period (9.6 ± 3.5 versus 9.1 ± 3.1 mmHg; p = 0.42, paired t test). Postphacoemulsification IOP was significantly higher than the corresponding IOP in the time-matched control group (p < 0.003, analysis of covariance). Mean VA improved significantly after the phacoemulsification (p = 0.0002) but remained stable in the control group. CONCLUSION: Temporal corneal phacoemulsification can affect long-term IOP control after trabeculectomy with 5-FU or MMC.
Dr. K. Swamynathan, Department of Ophthalmology, Indiana University, 702 Rotary Circle, Indianapolis, IN 46202, USA
Classification:
12.14.3 Phacoemulsification (Part of: 12 Surgical treatment > 12.14 Combined cataract extraction and glaucoma surgery)
