Objective: To compare therapeutic effects and complications oftbe two surgical methods; clear cornea incision and inferior approach cataract surgery in eyes with functional filtering bleb.
Materials and Methods: In this study 38 eyes from 31 patients were categorized into two groups each containing 19 eyes. We assessed age, sex, type of glaucoma, interval between the two operations, duration of follow up , usage of antifibrotic agent, the number of medications, visual acuity, posterior synechia formation, astigmatism, cup/disc ratio, bleb condition before and after surgery, and also intraoperative and postoperative complications. Student T-test was used to compare the results between the two groups.
Results: After 22.21±14 months of follow up in the clear cornea group and 19.17±15 months of follow up in the inferior approach group, we found that intraocur arpressure raised from10.9±5.3 to 14.9±5.6mmHg in clear cornea group and from 11.9+3.4 to 14.7+3.3mmHg in inferior approach group (p< 0.02). The number of medications raised from 0.4±0.8 to 1.1±1.1 in clear cornea group (P<0.003) and from 0.3 ±0.7 to 1.0±0.9 in inferior approach group (P<0.005). Duration of the follow up, interval between the two groups, and amount of astigmatism, were not significantly different between the two groups.
Conclusion: There was no significant difference between two methods of cataract surgery regarding intraocular pressure control, number of used medications, and induced astigmatism.