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¹ANEAH, 3. Göz Kliniiği, Ankara, Uzm. Dr.
²Gazi Üniversitesi Tıp Fakültesi Göz Hastalıkları A.D., Ankara, Uzm. Dr.
³ANEAH, 3. Göz Kliniiği Şef Muavini, Ankara, Uzm. Dr.
⁴Gazi Üniversitesi Tıp Fakültesi Göz Hastalıkları A.D., Ankara, Prof. Dr.
⁵ANEAH, 3. Göz Kliniiği Klinik Şefi, Ankara, Uzm. Dr. Purpose: To evaluate the anatomical changes and aqueous drainage dynamics in the late stage after trabeculectomy and nonpenetrating deep sclerectomy with ultrasound biomicroscopy (UBM).
Materials and Methods: We performed trabeculectomy in one eye and deep sclerectomy with mitomycine C (MMC) in the other eye of cases with open angle glaucoma when the intraocular pressure control has failed with the use of medical therapy and 12 of them found to be succesfull were enrolled in this study. Of the cases 9 were primary open angle glaucoma, 2 were capsular glaucoma and 1 was pigmentary glaucoma. The mean age of the patients was 55.7±7.8 years when they were operated. The UBM was performed in 36.3±5.9 (30-45) months postoperatively. All the UBM views were recorded and the best ones were evaluated. We evaluated internal ostium and bleb characteristics in cases with trabeculectomy and trabeculodescemetic membrane, subconjunctival bleb, intrascleral lake and the presence of suprachoroidal hypoechoic area in cases with deep sclerectomy.
Results: There were subconjunctival bleb and opened internal ostium in all cases with trabeculectomy. We detected subconjunctival bleb and intrascleral lake with various volumes in all cases with deep sclerectomy. Suprachoroidal hypoechoic area finding was not seen in any of them. The intrascleral lake was preserved more than 2.5 years in cases which deep sclerectomy was performed with MMC.
Conclusion: UBM is an important imaging technique in the evaluation of anatomical changes and aqueous drainage dynamics after penetrating and nonpenetrating glaucoma surgeries. It can also be very useful in the detection of anatomical causes of postoperative failures. Keywords : Trabeculectomy, nonpenetrating deep sclerectomy, ultrasound biomicroscopy, intraocular pressure, glaucoma