Journal of glaucoma · 2016
In Vivo Confocal Microscopy and Biomicroscopy of Filtering Blebs After Trabeculectomy.
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Caglar Cagatay, Karpuzoglu Nafiz, Batur Muhammed, Yasar Tekin
Аннотация
PURPOSE: The aim of this study is to analyze filtering blebs (FBs) after trabeculectomy with in vivo confocal microscopy (IVCM) and slit-lamp biomicroscopy.
MATERIALS AND METHODS: IVCM using the Heidelberg Retina Tomograph/Rostock Cornea Module and biomicroscopic examination were performed in 67 FBs in 55 patients 3 months to 30 years postoperatively (mean, 3.2 ± 2.1 y). Although the blebs were evaluated by slit-lamp biomicroscopy, standardized FB classification was used.
RESULTS: Of the patients, 9 were female (16.3%) and 46 were male (83.7%), ranging in age from 32 to 81 (51.5 ± 13.2) years. The absence of vascularization and tortuous vessels and the presence of epithelial microcysts on the bleb were significantly correlated with good bleb function (P=0.001). IVCM findings significantly correlated with good bleb function, including the number of epithelial microcysts (P=0.002), the stromal cysts without capsule (P<0.001), minimal vascularization (P=0.002), and the absence of tortuous conjunctival vessels (P=0.003) and reticular and trabecular bleb patterns (P=0.01 and <0.01, respectively). In contrast, a hyperreflective condensed bleb stroma was significantly associated with bleb failure (P<0.001).
CONCLUSIONS: IVCM supports biomicroscopic evaluation as the mainstay for FB analysis and permits diagnostic imaging of FBs to evaluate and follow-up the bleb, differentiation between good and insufficient bleb function, and a microscopic analysis at a cellular level including the structural pattern of the bleb.
MATERIALS AND METHODS: IVCM using the Heidelberg Retina Tomograph/Rostock Cornea Module and biomicroscopic examination were performed in 67 FBs in 55 patients 3 months to 30 years postoperatively (mean, 3.2 ± 2.1 y). Although the blebs were evaluated by slit-lamp biomicroscopy, standardized FB classification was used.
RESULTS: Of the patients, 9 were female (16.3%) and 46 were male (83.7%), ranging in age from 32 to 81 (51.5 ± 13.2) years. The absence of vascularization and tortuous vessels and the presence of epithelial microcysts on the bleb were significantly correlated with good bleb function (P=0.001). IVCM findings significantly correlated with good bleb function, including the number of epithelial microcysts (P=0.002), the stromal cysts without capsule (P<0.001), minimal vascularization (P=0.002), and the absence of tortuous conjunctival vessels (P=0.003) and reticular and trabecular bleb patterns (P=0.01 and <0.01, respectively). In contrast, a hyperreflective condensed bleb stroma was significantly associated with bleb failure (P<0.001).
CONCLUSIONS: IVCM supports biomicroscopic evaluation as the mainstay for FB analysis and permits diagnostic imaging of FBs to evaluate and follow-up the bleb, differentiation between good and insufficient bleb function, and a microscopic analysis at a cellular level including the structural pattern of the bleb.