MedTrace Logo

Venturi and Peristaltic Based Phacoemulsification in Femtosecond Laser Cataract Surgery

NCT03970525 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 111

Last updated 2023-04-03

No results posted yet for this study

Summary

This study will compare two methods of vacuum (peristaltic or venturi) commonly used during the removal of a femtosecond treated cataract. The investigators will observe which method uses less energy, is gentler on the eye, reduces corneal swelling and if the vision recovers faster with one method compared to the other.

Conditions

  • Cataract Senile

Interventions

DEVICE

Venturi pump

The venturi pump makes use of the venturi effect to create a vacuum. The venturi effect creates a vacuum by the flow of a fluid, typically air, over an opening. In many phacoemulsification machines, this requires nitrogen tanks or a self-contained air compressor. The vacuum level is created within a rigid drainage cassette, to which the phaco aspiration tubing is connected. Since there is no milking of the aspiration line, the phaco tubing can be made rigid with low compliance.

DEVICE

Peristaltic vacuum pump

The peristaltic pump uses rollers to compress the phacoemulsification outflow tubing in a peristaltic manner, thereby creating flow and vacuum. The compression of the rollers on the tubing with the rotation of the pump physically moves fluid and creates a continuous "milking" action on the fluid column, The phaco machine can directly control this flow level, hence the term flow based, however, the preset vacuum level is only achieved once there is occlusion of the outflow line, typically at the phaco needle tip with cataract material.

Sponsors & Collaborators

  • Johnson & Johnson Surgical Vision, Inc.

    collaborator INDUSTRY

  • Wendell Scott

    lead OTHER

Principal Investigators

  • Wendell J Scott, MD · Mercy Hospital

Eligibility

Min Age
22 Years
Max Age
90 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2019-05-16
Primary Completion
2023-03-16
Completion
2023-03-29
FDA Device
Yes

Countries

  • United States

Study Locations

More Related Trials

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03970525 on ClinicalTrials.gov