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Abstract #23834 Published in IGR 11-2

Canaloplasty: circumferential viscodilation and tensioning of Schlemm canal using a flexible microcatheter for the treatment of open-angle glaucoma in adults: two-year interim clinical study results

Lewis RA; von Wolff K; Tetz M; Koerber N; Kearney JR; Shingleton BJ; Samuelson TW
Journal of Cataract and Refractive Surgery 2009; 35: 814-824

See also comment(s) by Shlomo Melamed •

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PURPOSE: To evaluate 2-year postsurgical safety and efficacy of canaloplasty (circumferential viscodilation and tensioning of the inner wall of Schlemm canal) to treat open-angle glaucoma (OAG). SETTING: Multicenter surgical sites. METHODS: This international prospective study comprised adult OAG patients having glaucoma surgery or combined glaucoma-cataract surgery. Qualifying preoperative intraocular pressure (IOP) was at least 16 mm Hg and historical IOP, at least 21 mm Hg. The full circumference of the canal was viscodilated and a trabecular tensioning suture placed with a microcatheter. Primary outcome measures included IOP and glaucoma medication use. RESULTS: At 24 months, all 127 eyes (127 patients) had a mean IOP of 16.0 mm Hg ± 4.2 (SD) and mean glaucoma medication use of 0.5 ± 0.8 (baseline values 23.6 ± 4.8 mm Hg and 1.9 ± 0.8 medications). Eyes with canaloplasty alone had a mean IOP of 16.3 ± 3.7 mm Hg and 0.6 ± 0.8 medications (baseline values 23.2 ± 4.0 mm Hg and 2.0 ± 0.8 medications). Eyes with combined glaucoma-cataract surgery had a mean IOP of 13.4 ± 4.0 mm Hg and 0.2 ± 0.4 medications (baseline values 23.1 ± 5.5 mm Hg and 1.7 ± 1.0 medications). The IOP and medication use results at all time points were statistically significant versus baseline (P <.001). The late postoperative follow-up identified 3 patients with elevated IOP. No other serious ocular or nonocular complications were reported. CONCLUSION: Canaloplasty was safe and effective in reducing IOP in adult patients with OAG.

Private practice, Sacramento, California, USA. rlewiseyemd@yahoo.com

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Classification:

12.8.2 With tube implant or other drainage devices (Part of: 12 Surgical treatment > 12.8 Filtering surgery)

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