Document Detail


Interobserver variability of the Würzburg bleb classification score.
MedLine Citation:
PMID:  18849624     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: The Würzburg bleb classification score (WBCS) serves to assess filtering blebs in a standardized fashion. The purpose of this prospective masked agreement study was to evaluate the WBCS interobserver variability. METHODS: The WBCS provides a scheme to grade clinical bleb morphology. It evaluates the following parameters: vascularity, corkscrew vessels, encapsulation, microcysts and bleb height. Thus, 113 eyes of 104 consecutive patients at various times after surgery were examined (slit lamp biomicroscopy) by 3 ophthalmologists with each observer being unaware of the findings reported by the others. To calculate the interobserver variability of the WBCS, the interobserver consistency and absolute agreement were determined with an intraclass correlation coefficient (ICC) using a 2-way random model. RESULTS: The ICC values of a single rater's judgment were: vascularity +0.62, corkscrew vessels +0.67, encapsulation +0.63, bleb height +0.53, microcysts +0.52 and total score +0.74. The ICC values of the mean of all 3 raters were: +0.83 vascularity, +0.86 corkscrew vessels, +0.84 encapsulation, +0.77 bleb height, +0.76 microcysts and +0.90 total score. CONCLUSION: The WBCS is a bleb morphology score with high levels of interobserver consistency and absolute agreement in clinical practice.
Authors:
Thomas Klink; Sybille Schrey; Uta Elsesser; Janine Klink; Günther Schlunck; Franz Grehn
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Publication Detail:
Type:  Comparative Study; Journal Article; Randomized Controlled Trial     Date:  2008-10-10
Journal Detail:
Title:  Ophthalmologica. Journal international d'ophtalmologie. International journal of ophthalmology. Zeitschrift für Augenheilkunde     Volume:  222     ISSN:  1423-0267     ISO Abbreviation:  Ophthalmologica     Publication Date:  2008  
Date Detail:
Created Date:  2008-12-10     Completed Date:  2009-04-23     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0054655     Medline TA:  Ophthalmologica     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  408-13     Citation Subset:  IM    
Affiliation:
Department of Ophthalmology, Julius Maximilian University, Würzburg, Germany. klink_t@klinik.uni-wuerzburg.de
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MeSH Terms
Descriptor/Qualifier:
Blister / classification*
Conjunctiva / pathology*,  surgery
Female
Filtering Surgery*
Follow-Up Studies
Glaucoma, Angle-Closure / surgery*
Glaucoma, Open-Angle / surgery*
Humans
Male
Microscopy, Acoustic
Middle Aged
Observer Variation
Prospective Studies
Trabeculectomy / classification*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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