An observational study in Cataract, Vitreous Hemorrhage and Retinal Detachment, sponsored by Alcon Research. Recruiting at 1 site in United Kingdom. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-10-28.
Sponsored by Alcon Research (part of Alcon) · Observational
The purpose of this real-world evidence study is to compare surgical procedure times for UNITY® VCS and CONSTELLATION® Vision System.
Eligible subjects will undergo routine scheduled combined anterior-posterior segments surgery (phacovitrectomy). This single visit, time-and-motion study will be conducted in the United Kingdom. This study will be conducted by Alcon Vision LLC.
1,629 studies on the registry are indexed under Cataract; 235 are open to participants now.
This study's planned enrollment of 180 is above the median of 89 across 475 observational studies indexed under Cataract.
Browse Cataract studies →Alcon Research is the lead sponsor of 624 studies on the registry; 9 are open to participants now.
Of its 112 completed or terminated interventional studies of FDA-regulated products, 102 (91%) have results posted.
Counted across the registry records on this site, refreshed daily.
Subjects will be recruited from the clinical practice of the participating Investigator.
Key Inclusion Criteria:
Key Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Subjects will undergo routine scheduled combined anterior-posterior segments surgery (phacovitrectomy)
Device: UNITY VCS
Subjects will undergo routine scheduled combined anterior-posterior segments surgery (phacovitrectomy)
Device: CONSTELLATION
UNITY® VCS is a CE-marked, FDA-approved ophthalmic microsurgical system that is indicated for both anterior segment (i.e., phacoemulsification and removal of cataracts) and posterior segment (i.e., vitreoretinal) ophthalmic surgery. The focus of this study will be on combined anterior-posterior segments surgery (phacovitrectomy).
Also known as: UNITY® Vitreoretinal Cataract System (VCS)
CONSTELLATION is a CE-marked, FDA-approved ophthalmic microsurgical system that is indicated for both anterior segment (i.e., phacoemulsification and removal of cataracts) and posterior segment (i.e., vitreoretinal) ophthalmic surgery. The focus of this study will be on combined anterior-posterior segments surgery (phacovitrectomy).
Also known as: CONSTELLATION® Vision System
Proportion of surgeons replying "efficient" or "very efficient" to the question, "How would you rate overall OR (operating room) efficiency of the console for the combined phaco-vitrectomy surgery (including set-up/tear-down)?
Responses will be collected on a 5-point scale where 1=Very Inefficient, 2=Inefficient, 3=Neutral, 4=Efficient, and 5=Very Efficient.
Time frame: Up to Day 1 post completion of the surgery
Plan to share: No
No publications or documents are linked to this record.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
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