Bimanual phacoemulsification through 2 stab incisions - A wound-temperature study

被引:46
作者
Soscia, W
Howard, JG
Olson, RJ
机构
[1] Univ Utah, Hlth Sci Ctr, John A Moran Eye Ctr, Dept Ophthalmol & Visual Sci, Salt Lake City, UT 84132 USA
[2] Allergan Pharmaceut Inc, Irvine, CA 92623 USA
关键词
D O I
10.1016/S0886-3350(02)01277-4
中图分类号
R77 [眼科学];
学科分类号
100212 ;
摘要
Purpose: To determine the thermal parameters of bimanual ultrasound-based phacoemulsification through 2 stab incisions with a bare aspiration needle. Setting: In vitro laboratory. Methods: The Sovereign((R)) phacoemulsification unit (Allergan) was used in 3 modes in conjunction with the Olson irrigating chopper (ASICO) in 6 fresh human cadaver eye-bank eyes to determine the temperature at which a wound burn would occur. A wound burn was defined as temperature exceeding 45degreesC, whitening around the wound, or wound contraction. Results: One hundred percent ultrasound power was required to create a wound burn in the unoccluded mode in continuous ultrasound and the burst mode. The time to create the wound burn was 160 and 180 seconds in 2 eyes in continuous ultrasound and 42 and 50 seconds in 2 eyes in the burst mode; it was 58 and 70 seconds in continuous ultrasound with complete occlusion and required 80% power. Conclusions: The energy necessary to obtain a wound burn during 2-incision bimanual ultrasound-based phacoemulsification with a bare aspiration needle in human cadaver eyes was extremely high. The parameters necessary to create a wound burn in each modality occurred well beyond normal clinical settings and provide evidence that 2-stab ultrasound-based lens extraction can be performed safely with the Sovereign machine.
引用
收藏
页码:1039 / 1043
页数:5
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