PURPOSES: To investigate the relation between filtering bleb function and ultrasound biomicroscopic images, and to establish a new classification system for filtering blebs according to these images. METHODS: After trabeculectomy with mitomycin C, the filtering blebs of 117 eyes from 117 patients with various types of glaucoma were examined using ultrasound biomicroscopy. Four parameters of the images-intrableb reflectivity, visibility of the route under the scleral flap, formation of a cavernous fluid-filled space, and bleb height-were correlated with the level of intraocular pressure (IOP). RESULTS: Reflectivity inside the bleb and visibility of a route under the scleral flap were highly associated with IOP control. Blebs were classified into four categories according to the four measured parameters: type L (low-reflective), type H (high-reflective), type E (encapsulated), and type F (flattened). Eyes with good IOP control had mainly type L blebs. Type E and type F blebs were seen mostly in eyes requiring additional medication. CONCLUSION: The structure inside a filtering bleb is visible by ultrasound biomicroscopy, and bleb function is significantly associated with its ultrasound biomicroscopic image in eyes trabeculectomized with adjunctive mitomycin C.
PURPOSES: To investigate the relation between filtering bleb function and ultrasound biomicroscopic images, and to establish a new classification system for filtering blebs according to these images. METHODS: After trabeculectomy with mitomycin C, the filtering blebs of 117 eyes from 117 patients with various types of glaucoma were examined using ultrasound biomicroscopy. Four parameters of the images-intrableb reflectivity, visibility of the route under the scleral flap, formation of a cavernous fluid-filled space, and bleb height-were correlated with the level of intraocular pressure (IOP). RESULTS: Reflectivity inside the bleb and visibility of a route under the scleral flap were highly associated with IOP control. Blebs were classified into four categories according to the four measured parameters: type L (low-reflective), type H (high-reflective), type E (encapsulated), and type F (flattened). Eyes with good IOP control had mainly type L blebs. Type E and type F blebs were seen mostly in eyes requiring additional medication. CONCLUSION: The structure inside a filtering bleb is visible by ultrasound biomicroscopy, and bleb function is significantly associated with its ultrasound biomicroscopic image in eyes trabeculectomized with adjunctive mitomycin C.
Authors: S Roters; C Lüke; C P Jonescu-Cuypers; B F Engels; P C Jacobi; W Konen; G K Krieglstein Journal: Br J Ophthalmol Date: 2002-09 Impact factor: 4.638
Authors: Thomas Theelen; Pieter Wesseling; Jan E E Keunen; B Jeroen Klevering Journal: Graefes Arch Clin Exp Ophthalmol Date: 2006-11-22 Impact factor: 3.117
Authors: Ali Abbas El Salhy; Rabab Mohamed Elseht; Ahmed Fekry Al Maria; Saied Mohamed Abd El-Wahab Shalaby; Tarek Ragaee Hossein Journal: Int J Ophthalmol Date: 2018-02-18 Impact factor: 1.779