Canaloplasty versus Viscocanalostomy in Primary Open Angle Glaucoma
Abstract
Introduction: The purpose of this study was to compare the efficacy and safety of canaloplasty versus viscocanalostomy in management of uncontrolled primary open angle glaucoma (POAG) with medication.
Methods: Canaloplasty surgery was applied for thirty eyes of thirty patients (45- 55 years) with a mean age of 48 years (Group A) and viscocanalostomy surgery was applied also for thirty eyes of thirty patients (43- 54 years) with a mean age of 46 years (group B). All patients were with uncontrolled primary open angle glaucoma by maximally tolerated medical therapy.
Results: Intraocular pressure (IOP) in both surgeries was significantly reduced through follow up period (p < 0.0.001). Complete success was 86.6% in group A and 80% in group B. Visual field deterioration was in 2 cases (6%) in group A and in 4 cases (13%) in group B. Low incidence of postoperative complications was reported as Descemet’s membrane detachment (3% in group A and 8% in group B), ocular hypotony (2% in group A and 4% in group B) and hyphema (3% in group A and 5% in group B).
Conclusion: Canaloplasty was more effective and safer than viscocanalostomy in management of uncontrolled primary open angle glaucoma (POAG) with medication.
References
Harvey BJ, Khaimi MA. A review of canaloplasty. Saudi J Ophthalmol. 2011; 25(4): 329-36. doi:
1016/j.sjopt.2011.08.003. PMID: 23960946, PMCID: PMC3729506.
Shaarawy T, Nguyen C, Schnyder C, Mermoud A. Five year results of viscocanalostomy. Br J Ophthalmol.
; 87(4): 441-5. doi: 10.1136/bjo.87.4.441. PMID: 12642307, PMCID: PMC1771626.
Khaimi MA. Canaloplasty using iTrack 250 Microcatheter with Suture Tensioning on Schlemm's Canal.
Middle East Afr J Ophthalmol. 2009; 16(3): 127-9. doi: 10.4103/0974-9233.56224. PMID: 20142977,
PMCID: PMC2813597.
Lewis RA, von Wolff K, Tetz M, Koerber N, Kearney JR, Shingleton BJ, et al. Canaloplasty:
circumferential viscodilation and tensioning of Schlemm's canal using a flexible microcatheter for the
treatment of open-angle glaucoma in adults: Two-year interim clinical study results. J Cataract Refract
Surg. 2009; 35(5): 814-24. doi: 10.1016/j.jcrs.2009.01.010. PMID: 19393879.
Godfrey DG, Fellman RL, Neelakantan A. Canal surgery in adult glaucomas. Curr Opin Ophthalmol. 2009;
(2): 116-21. doi: 10.1097/icu.0b013e32831eef65. PMID: 19240543.
Shaarawy T, Mermoud A. Atlas of glaucoma surgery. Jaypee Brothers medical publishers, New Delhi
chapter. 2006; 8: 102-9: 112.
Peckar C, Korber N. Canaloplasty for open angle glaucoma: a three years critical evaluation and
comparison with viscocanalostomy. Spektrum der Augenheilkunde September. 2008; 22(4): 240-6. doi:
1007/s00717-008-0272-y.
Korber NJ. Canaloplasty in one eye compared with viscocanalostomy in the contralateral eye in patients
with bilateral open-angle glaucoma. J Glaucoma. 2012; 21(2): 129-34. doi:
1097/IJG.0b013e31820277c0. PMID: 21278587.
Shingleton B, Tetz M, Korber N. Circumferential viscodilation and tensioning of Schlemm canal
(canaloplasty) with temporal clear corneal phacoemulsification cataract surgery for open-angle glaucoma
and visually significant cataract; one-year results. J Cataract Refract Surg. 2008; 34(3): 433-40. doi:
1016/j.jcrs.2007.11.029. PMID: 18299068.
Feiner L, Piltz JR. Collaborative Initial Glaucoma Treatment Study: a summary of results to date. Curr
Opin Ophthalmol. 2003; 14(2): 106-11. doi: 10.1097/00055735-200304000-00010. PMID: 12698052.
Musch DC, Gillespie BW, Lichter PR, Niziol LM, Janz NK. Visual field progression in the Collaborative
Initial Glaucoma Treatment Study the impact of treatment and other baseline factors. Ophthalmology.
; 116(2): 200-7. doi: 10.1016/j.ophtha.2008.08.051. PMID: 19019444, PMCID: PMC3316491.
Ayyala RS, Chaudhry AL, Okogbaa CB, Zurakowski D. Comparison of surgical outcomes between
canaloplasty and trabeculectomy at 12 months' follow-up. Ophthalmology. 2011; 118(12): 2427-33. doi:
1016/j.ophtha.2011.05.021. PMID: 21856008.
Published
Issue
Section
License
Copyright (c) 2020 KNOWLEDGE KINGDOM PUBLISHING
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.