Unity VCS: A Comparison Study Evaluating Corneal Clarity and Thickness

NCT ID: NCT07222150

Last Updated: 2025-10-29

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

105 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-10-07

Study Completion Date

2026-10-31

Brief Summary

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Phacoemulsification (cataract surgery) is usually performed while temporarily increasing the pressure inside the eye. The purpose of this study is to see if maintaining different pressure levels inside the eye during this procedure results in fewer side effects and better vision shortly after the surgery. Cataract surgery will be performed using Unity VCS at a lower IOP in one eye compared to traditional IOP with Centurion Vision System with Ozil in the other eye. Both of which are approved by the United States Food and Drug Administration (FDA) and used per label.

Detailed Description

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Study patients will undergo sequential bilateral cataract surgery with the same cataract grade in both eyes. Both surgeries will be completed within one week of each other.

The first surgical eye will be randomly assigned (like the flip of a coin). Study patients will have surgery performed with the Alcon Unity VCS system using 4D. The second eye will undergo surgery a week later with Alcon Centurion Vision System (VCS) with Ozil. Surgery with the Unity VCS arm will be performed with a lower IOP setting (less than 40). Surgery with the Centurion with Ozil arm will be performed with a higher IOP setting (greater or equal 60).

Participation in the study is expected to take one month.

Conditions

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Cataract

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Prospective, two-surgeon, randomized, paired-eye study; patients undergoing sequential, uncomplicated bilateral phacoemulsification using Unity VCS 4D phaco with intraocular IOP ≤ 28mmHg (low IOP) in one eye and with IOP ≥ 65mmHg (high IOP) in the other eye usingCenturion Vision System with Ozil.
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Unity VCS

Cataract surgery with Unity VCS

Group Type ACTIVE_COMPARATOR

Cataract surgery with Unity VCS

Intervention Type DEVICE

Standard cataract surgery

Cataract surgery with Centurion with Ozil

Intervention Type DEVICE

Standard cataract surgery

Centurion with Ozil

Cataract surgery with Centurion with Ozil

Group Type ACTIVE_COMPARATOR

Cataract surgery with Unity VCS

Intervention Type DEVICE

Standard cataract surgery

Cataract surgery with Centurion with Ozil

Intervention Type DEVICE

Standard cataract surgery

Interventions

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Cataract surgery with Unity VCS

Standard cataract surgery

Intervention Type DEVICE

Cataract surgery with Centurion with Ozil

Standard cataract surgery

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Cataracts

Exclusion Criteria

* Glaucoma, cornea disease
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Alcon, a Novartis Company

INDUSTRY

Sponsor Role collaborator

Metrolina Eye Associates, PLLC

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Ivan Mac, MD

Role: PRINCIPAL_INVESTIGATOR

Metrolina Eye Associates

Locations

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Metrolina Eye Associates

Matthews, North Carolina, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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IVAN MAC, MD

Role: CONTACT

7042341930

Megan Lee

Role: CONTACT

7042341930

Facility Contacts

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Megan Lee

Role: primary

7042341930

Elisabeth Torres

Role: backup

References

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Liu Y, Hong J, Chen X. Comparisons of the clinical outcomes of Centurion(R) active fluidics system with a low IOP setting and gravity fluidics system with a normal IOP setting for cataract patients with low corneal endothelial cell density. Front Med (Lausanne). 2023 Nov 23;10:1294808. doi: 10.3389/fmed.2023.1294808. eCollection 2023.

Reference Type BACKGROUND
PMID: 38076276 (View on PubMed)

Spaulding J, Hall B. Efficiency of phacoemulsification handpieces with high and low intraocular pressure settings. J Cataract Refract Surg. 2025 Mar 1;51(3):218-221. doi: 10.1097/j.jcrs.0000000000001581.

Reference Type BACKGROUND
PMID: 39602355 (View on PubMed)

Rauen MP, Joiner H, Kohler RA, O'Connor S. Phacoemulsification using an active fluidics system at physiologic vs high intraocular pressure: impact on anterior and posterior segment physiology. J Cataract Refract Surg. 2024 Aug 1;50(8):822-827. doi: 10.1097/j.jcrs.0000000000001457.

Reference Type BACKGROUND
PMID: 38595209 (View on PubMed)

Provided Documents

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Document Type: Study Protocol and Statistical Analysis Plan

View Document

Other Identifiers

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IM-25-02

Identifier Type: OTHER

Identifier Source: secondary_id

IIT# 98711335

Identifier Type: -

Identifier Source: org_study_id

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