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DisCoVisc a Safe Alternative to Healon Viscoelastic Device in Cataract Surgery: Presented at COS By Louise Gagnon TORONTO -- July 1, 2009 -- The DisCoVisc ophthalmic surgery device can be used as an alternative to the Healon viscoelastic device in cataract surgery, according to a study presented here at the 72nd Annual Meeting and Exhibition of the Canadian Ophthalmological Society (COS). "We would use DisCoVisc in situations where we want to provide more endothelial protection to the eye," explained Stanley Chan, MD, Department of Ophthalmology, University of Alberta, Edmonton, Alberta. A total of 33 eyes of 21 patients were randomised to cataract surgery: 19 eyes to the Healon device and 14 to DisCoVisc. Researchers documented surgical factors such as phacoemulsification time, total case time, subjective surgical performance, and surgical complications. No significant surgical complications occurred with either surgical device, according to Dr. Chan. Corneal pachymetry rose the first day after surgery by an average of 33 microns in the DisCoVisc group versus 48 microns in the Healon group. At day 15, a relative increase in corneal thickness remained among patients who were subjected to the Healon device (18 microns) compared with those subjected to the DisCoVisc (4 microns). Less loss of endothelial cell density was found in DisCoVisc group at day 15: average loss 294 cells/mm2 (11.5%) with DisCoVisc versus 470 cells/mm2 (17.9%) with the Healon device. Patients did not make any subjective assessments that indicated a difference between the devices, noted Dr. Chan. However, surgeons indicated subjectively that using the DisCoVisc device during phacoemulsification was superior to using the Healon device. "From a surgical standpoint, there was significant improvement in the retention of viscoelastic with DisCoVisc," said Dr. Chan. On the other hand, the investigators found that the Healon device was easier to remove at the end of surgery. More study is needed to confirm the positive impact of using the DisCoVisc device on endothelial cell density and corneal thickness, said Dr. Chan. [Presentation title: Comparison of Healon Versus DisCoVisc for Cataract Surgery. Abstract P12] E-mail this page to a friend or colleague! To print, use this version