الفهرس 
Anterior Chamber
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Abstract
Trabeculectomy has been the gold standard procedure for the surgical treatment of patients with glaucoma for several decades. Although long-term follow-up studies are relatively scarce, long-term intraocular pressure (IOP) lowering has been found difficult to achieve due to scarring of the filtering bleb. - The bleb is the functional part of trabeculectomy and the part that largely determines long-term success, failure, and complications. - Ultrasound biomicroscopy is an imaging technology that uses highfrequency ultrasound and thus allows visualization of the anterior portion of the globe in microscopic resolution. Ultrasound biomicroscopy (VU Max Sonomed) has a 50 MHz transducer. This allows resolution of structures up to 50 microns. It is independent on the clarity of the optical media and allows, for the first time, a non-invasive demonstration of the structures of the anterior segment and their relationship to each other. Therefore, it is especially suitable for diagnosis and research on the various forms of glaucoma.