From the Stein Eye Institute and Department of Ophthalmology, David Geffen School of Medicine at UCLA, Los Angeles, California (Miller); Alcon Research LLC, Lake Forest, California (Dyk, Yalamanchili).
J Cataract Refract Surg. 2021 Nov 1;47(11):1466-1472. doi: 10.1097/j.jcrs.0000000000000651.
To evaluate surge volume after occlusion breaks in 3 different phacoemulsification systems.
Alcon Research LLC, Lake Forest, California.
Experimental study.
A mechanical spring eye model was used to test the Centurion with Active Sentry, WhiteStar Signature Pro, and Stellaris PC. Raw oscilloscope data were converted to volumetric and pressure measurements. Fitted average surge traces were generated for each test condition and used to develop an interpolation algorithm to predict transient occlusion break surge events. Two-dimensional heat maps were generated.
During occlusion break surge, the Centurion with Active Sentry had smaller aqueous volume losses than the WhiteStar or Stellaris PC. Maximum surge volumes within the mechanical spring eye model displacement limit were 74.7 μL, 157.5 μL, and 151.7 μL using Centurion with Active Sentry, WhiteStar, and Stellaris PC, respectively. In the aphakic state, heat maps showed that Centurion with Active Sentry had less than 20% aqueous volume loss across all vacuum limits and target intraocular pressure; WhiteStar and Stellaris PC systems had up to 35% and 50% aqueous volume losses, respectively, at the higher vacuum limits. In the phakic state, Centurion with Active Sentry had up to 30% aqueous volume loss and WhiteStar and Stellaris PC systems had up to 50% aqueous volume losses. In addition, predicted transient traces demonstrated that Centurion with Active Sentry had the lowest percentage simulated aqueous volume loss compared with WhiteStar or Stellaris PC.
Centurion with Active Sentry had lower aqueous volume losses after occlusion break than WhiteStar and Stellaris PC systems at all surgical settings.
评估 3 种不同的超声乳化系统在阻断后涌流体积。
爱尔康研究有限责任公司，加利福尼亚州森林湖。
实验研究。
使用机械弹簧眼模型测试 Centurion with Active Sentry、WhiteStar Signature Pro 和 Stellaris PC。原始示波器数据转换为体积和压力测量值。为每个测试条件生成拟合的平均涌流迹线，并使用该迹线开发插值算法来预测瞬态阻断涌流事件。生成二维热图。
在阻断涌流期间，Centurion with Active Sentry 的房水体积损失小于 WhiteStar 或 Stellaris PC。在机械弹簧眼模型位移限制内，Centurion with Active Sentry、WhiteStar 和 Stellaris PC 的最大涌流体积分别为 74.7 μL、157.5 μL 和 151.7 μL。在无晶状体状态下，热图显示 Centurion with Active Sentry 在所有真空限制和目标眼内压下的房水体积损失小于 20%；WhiteStar 和 Stellaris PC 系统在较高的真空限制下分别有高达 35%和 50%的房水体积损失。在有晶状体状态下，Centurion with Active Sentry 的房水体积损失高达 30%，WhiteStar 和 Stellaris PC 系统的房水体积损失高达 50%。此外，预测的瞬态迹线表明，与 WhiteStar 或 Stellaris PC 相比，Centurion with Active Sentry 模拟的房水体积损失百分比最低。
在所有手术设置下，Centurion with Active Sentry 在阻断后房水体积损失低于 WhiteStar 和 Stellaris PC 系统。
