Flared phacoemulsification tips to decrease ultrasound time and energy in cataract surgery.
PURPOSE: To determine the effect on ultrasound (US) time and energy of using flared phacoemulsification tips in cataract surgery. SETTING: Private referral practice of Pacific Cataract & Laser Institute, Chehalis, Washington, USA. METHODS: One surgeon using the Allergan Medical Optics Diplomate phacoemulsification machine performed cataract surgery by a single divide-and-conquer technique. A prospective nonmasked consecutive study group (n = 262) was selected from patients operated on with phaco tips flared by 25%. A consecutive control group (n = 440) was selected from patients having surgery using the same technique except for the use of straight phaco tips. The study group had cataract surgery over a 5 week period and the control group, over an earlier 10 week period. Two weeks separated the groups. Cases complicated by vitreous loss were eliminated. The 2 groups were compared by age, sex, total phaco time ( TPT, the total time ultrasound energy was applied), and equivalent phaco time ( EPT, the product of the phaco time elapsed and the phaco energy). RESULTS: One patient in each group was eliminated for vitreous loss during surgery. There were no significant differences in age, sex, or eye between the 2 groups. The study group had a mean TPT of 29.2 seconds +/- 11.7 (SD) (range 0 to 88 seconds) and a mean EPT of 16.4 +/- 8.6 seconds (range 0 to 67 seconds). The control group had a mean TPT of 34.4 +/- 16.1 seconds (range 0 to 130 seconds) (P <.001) and a mean EPT of 20.0 +/- 12.8 seconds (range 0 to 107 seconds) (P <.001). CONCLUSION: Flared ultrasonic phacoemulsification tips significantly reduced the US time and energy used in cataract surgery.[1]References
- Flared phacoemulsification tips to decrease ultrasound time and energy in cataract surgery. McNeill, J.I. Journal of cataract and refractive surgery. (2001) [Pubmed]
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