Vision Loss and Recovery after Baerveldt Aqueous Tube Shunt Implantation

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Vision Loss and Recovery after Baerveldt Aqueous Tube Shunt Implantation

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Title: Vision Loss and Recovery after Baerveldt Aqueous Tube Shunt Implantation
Author: Kim, Esther Lee; Tran, Jeffrey; Töteberg-Harms, Marc; Chahal, Jasdeep; Rhee, Douglas; Chopra, Vikas; Francis, Brian

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Citation: Kim, Esther Lee, Jeffrey Tran, Marc Töteberg-Harms, Jasdeep Chahal, Douglas Rhee, Vikas Chopra, and Brian Francis. 2017. “Vision Loss and Recovery after Baerveldt Aqueous Tube Shunt Implantation.” Journal of Ophthalmology 2017 (1): 4140305. doi:10.1155/2017/4140305. http://dx.doi.org/10.1155/2017/4140305.
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Abstract: This study aims to determine the course of vision loss after Baerveldt aqueous tube shunt placement and identify risk factors associated with unexplained severe long-term vision loss, or snuff-out. We retrospectively reviewed 247 eyes of 222 patients who underwent Baerveldt implantations at one of two academic institutions. Postoperative vision loss at 6 months following surgery was categorized as mild-to-moderate versus severe and long-term versus transient. Long-term vision loss, defined as 3 or more lines of Snellen visual acuity (VA) loss compared with preoperative VA, occurred in 63 of 247 eyes (25.5%), and 39 had mild-to-moderate and 24 had severe loss. Of these 63 eyes, 18 had no identifiable cause of vision loss. On multivariate analysis, poorer Snellen VA on postoperative day 1 (POD1) was found to be a significant risk factor for long-term vision loss (p = 0.005). In addition, the negative change in preoperative versus POD1 Snellen VA (p = 0.021) and the presence of split fixation involving the inferonasal quadrant on preoperative Humphrey visual field (p = 0.044) were significant risk factors for snuff-out. Transient vision loss occurred in 76 of 242 eyes (30.8%). In conclusion, vision loss is not uncommon after Baerveldt surgery, with snuff-out occurring in 2.4% of cases in this study.
Published Version: doi:10.1155/2017/4140305
Other Sources: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5286481/pdf/
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:31731625
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