Goniotomy with a single-use dual blade: Short-term results

Michael D. Greenwood, Leonard K. Seibold, Nathan M. Radcliffe, Syril K. Dorairaj, Ahmad A. Aref, Jesús Jimenez Román, Gabriel S. Lazcano-Gomez, Jason K. Darlington, Suhail Abdullah, Mark C. Jasek, Khaled A. Bahjri, John P. Berdahl

Research output: Contribution to journalArticlepeer-review

89 Scopus citations


Purpose To evaluate the intraocular pressure (IOP)–lowering efficacy and safety of a single-use dual blade (Kahook) in patients with mild to end-stage glaucoma. Setting International multicenter ophthalmic care centers. Design Prospective interventional case series. Methods Consecutive patients with glaucoma who had phacoemulsification plus goniotomy with the single-use dual blade were enrolled in this study. Each center collected deidentified clinical data, including preoperative and postoperative IOP, medication use, adverse events, and whether additional surgery was required during a 6-month follow-up. Results Of the 71 eyes included in this study, 70% had primary open-angle glaucoma. Other diagnoses included angle-closure, pigmentary, pseudoexfoliative, and normal-tension glaucoma. Sixty-five percent of eyes were classified as having mild to moderate glaucoma and 35%, severe glaucoma. The mean baseline IOP decreased from 17.4 mm Hg ± 5.2 (SD) to 12.8 ± 2.6 mm Hg 6 months postoperatively and the hypotensive medication use decreased from 1.6 ± 1.3 to 0.9 ± 1.0, respectively (P <.001 and P =.005, respectively). The most common observation was blood reflux during surgery (39.4%). Conclusion Single-use dual blade goniotomy plus phacoemulsification resulted in a significant and sustained reduction in IOP and a decrease in glaucoma medications after 6 months of follow-up.

Original languageEnglish
Pages (from-to)1197-1201
Number of pages5
JournalJournal of Cataract and Refractive Surgery
Issue number9
StatePublished - Sep 2017
Externally publishedYes


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