From the Iladevi Cataract & IOL Research Centre, Ahmedabad, India.
J Cataract Refract Surg. 2021 Sep 1;47(9):1205-1209. doi: 10.1097/j.jcrs.0000000000000666.
To compare real-time intraocular pressure (IOP) response to occlusion break event in 2 phacoemulsification systems.
Iladevi Cataract and IOL Research Center, India.
Randomized, experimental study.
Rabbits were randomized to:Group I (n = 10 eyes), Centurion Vision system with active fluidics, or, Group II (n = 10 eyes), Centurion with Active Sentry. Within each group, parameter set 1 (IOP 30 mm Hg, aspiration flow rate [AFR] 20 mL/min, and vacuum 600 mm Hg) and parameter set 2 (IOP 50 mm Hg, AFR 25 mL/min, and vacuum 600 mm Hg) were tested. Real-time rate of drop and rise of IOP after occlusion break event (mm Hg per second) and percentage reduction of IOP from maximum during nuclear fragment removal were compared.
10 rabbits (20 eyes) were included. Rate of drop of IOP after occlusion break was not significantly different between groups. Rate of rise of IOP was statistically significantly higher in Group II with both parameter sets (199.09 ± 69.28 vs 94.33 ± 45.66 in parameter set 1, P = .006; and 256 ± 45.05 vs 165.25 ± 51.80 in parameter set 2, P = .005), suggesting faster recovery to baseline IOP after occlusion break. The mean percentage reduction of IOP from maximum was significantly higher in Group I (P = .003).
Rise of IOP to baseline after occlusion break event was faster and mean percentage reduction of IOP from maximum during nuclear fragment removal was lower when using the Centurion Vision system with the Active Sentry upgrade compared with the traditional handpiece. The ability to sense IOP at the level of the handpiece with the Active Sentry upgrade allows faster mitigation of surge response.
比较两种超声乳化仪系统中断流后实时眼压（IOP）的反应。
印度 Iladevi 白内障和人工晶状体研究中心。
随机、实验研究。
将兔子随机分为两组：I 组（n = 10 只眼），Centurion Vision 系统，带主动流控，或 II 组（n = 10 只眼），Centurion 带主动监测仪。在每组内，测试参数设置 1（IOP 30mmHg，抽吸流速[AFR]20mL/min，真空 600mmHg）和参数设置 2（IOP 50mmHg，AFR 25mL/min，真空 600mmHg）。比较断流后实时 IOP 下降和上升率（每秒眼压下降或上升mmHg），以及从核碎片移除时最大IOP 降低的百分比。
共纳入 10 只兔子（20 只眼）。两组间断流后 IOP 下降率无显著差异。两组参数设置下，IOP 上升率均显著更高（参数设置 1 时，II 组为 199.09 ± 69.28 vs 94.33 ± 45.66，P =.006；参数设置 2 时，256 ± 45.05 vs 165.25 ± 51.80，P =.005），提示断流后更快恢复到基础 IOP。从最大IOP 降低的平均百分比在 I 组显著更高（P =.003）。
与传统手柄相比，使用带有主动监测仪升级的 Centurion Vision 系统，断流后 IOP 上升到基础水平更快，从核碎片移除时最大IOP 降低的平均百分比更低。带有主动监测仪升级的手柄可感知IOP 的能力允许更快地缓解压力反应。
