Unity VCS: A Comparison Study Evaluating Corneal Clarity and Thickness
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Cataract surgery with Unity VCS, Cataract surgery with Centurion with Ozil.
- Who it may be relevant to
- Registry conditions: Cataract. Basic parameters: from 18 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- United States
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
Unsure about the terms? Read our patient guide →
Official title
Unity VCS: A Comparison Study Evaluating Corneal Clarity and Thickness at Day 1 and Day 8 Post Op
Overview
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
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.
Interventions
- Device Cataract surgery with Unity VCS
Standard cataract surgery - Device Cataract surgery with Centurion with Ozil
Standard cataract surgery
Primary outcome measures
- Central corneal thickness (CCT) [Time frame: Pre-operative, Post-operative day #1, Post-operative day #8 for each arm of the study]
Eligibility criteria
Inclusion criteria
- Cataracts
Exclusion criteria
- Glaucoma, cornea disease
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Allocation
- Randomized
- Model
- Crossover
- Masking
- Open label
- Primary purpose
- Treatment
Study locations
United States · 1 center
- Metrolina Eye Associates — Matthews
Publications
- 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. PMID 38076276
- 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. PMID 39602355
- 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. PMID 38595209
Identifiers
NCT: NCT07222150 · IIT# 98711335 · IM-25-02