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T. Okazaki, T. Oshika, S. Eguchi, K. Oki, S. Yaguchi, H. Bissen-Miyajima, I. Ota, G. Sugita, K. Miyata; Clinical Comparison of Healon5 and Healon in Phacoemulsification and Intraocular Lens Implantation: A Randomized Multicenter Study . Invest. Ophthalmol. Vis. Sci. 2003;44(13):196.
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Purpose: To compare the ophthalmic viscosurgical devices (OVDs), Healon5 (viscoadaptive; dispersive and cohesive) and Healon (cohesive), in terms of their overall clinical performance during phacoemulsification and intraocular lens (IOL) implantation as well as their influence on intraocular pressure (IOP) and corneal endothelium. Methods: In this randomized prospective clinical study, the performance of Healon5 (sodium hyaluronate 2.3%) and Healon (sodium hyaluronate 1.0%) was evaluated during cataract surgery in 157 patients (Healon5; 79, Healon; 78). Surgeons evaluated on a 5-point scale; retention during phacoemulsification (primary endpoint), ease of injection, maintenance of anterior chamber during continuous curvilinear capsulorhexis (CCC), facilitation of IOL of implantation, ease of removal from the eye, and transparency during surgery. The IOP was measured preoperatively and 5 hours, 24 hours, 7days, and 3 months postoperatively. The corneal thickness was measured before and 24 hours, 7 days, and 3 month after surgery. Corneal endothelial cell count was recorded preoperatively and 3months postoperatively. Results: Intraocular retention during phacoemulsification was assessed as good or very good in 77% of the Healon5 group compared to 8% of the Healon group, which were statistically significant (p<.0001, Wilcoxon rank-sum test). The Healon5 group showed significantly better scores for maintenance of the anterior chamber during CCC (p<.0001) and facilitation of IOL implantation (p=.032), while Healon was assessed to be superior to Healon5 in terms of ease of injection (p<.0001), ease of removal from the eye (p<.0001), and transparency during surgery (p=.023). There were no statistically significant between-group differences in IOP changes, corneal endothelial cell count, and corneal thickness. Conclusions: Healon5 was rated to be better than Healon in terms of retention during phacoemulsification, maintenance of anterior chamber during CCC, and facilitation of IOL Implantation. Healon was assessed to be easier to remove. Both OVDs showed no differences in safety-related parameters. These findings indicate the efficacy of Healon5 in cataract surgery.
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