Clinical trial Recruiting at 1 site Interventional Ages Any age to 8

Investigating how carbon dioxide levels affect eye pressure in children

Official title: Effect of Raised End-Tidal pCo2 on Choroidal Volume

Run by University of Pittsburgh · NCT06275308 · Data updated 2026-11-12

This study is testing how different levels of carbon dioxide in the body affect eye pressure in young children during eye exams.

More Intraocular Pressure trials

Quick facts

Study typeInterventional
AgesAny age to 8 Years
SexAll
Enrollment20 (estimated)
SponsorUniversity of Pittsburgh
Academic / other
Locations1 site (Pittsburgh, Pennsylvania)
StatusRecruiting
StartedFebruary 27, 2023
Main results expectedDecember 30, 2026
Study endsDecember 30, 2026
Registry record updatedJanuary 9, 2026
Trial IDNCT06275308 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are children aged newborn to 8 years undergoing an eye exam under anesthesia for ophthalmologic reasons.

Probably not a fit

Patients over the age of 8 or those with specific medical conditions affecting the eye or cerebral autoregulation will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study examines the relationship between arterial carbon dioxide concentration and vitreous pressure on choroidal volume in children undergoing eye exams under anesthesia. Using integrated intraoperative OCT imaging, the thickness of the choroid will be measured while manipulating end-tidal CO2 levels. The goal is to understand how changes in CO2 levels may influence intraocular pressure and potentially lead to complications during eye procedures. Children aged newborn to 8 years with normal eyes will be included, and various measurements will be taken to ensure accuracy.

Why it matters

Potential benefit: If successful, this study could lead to improved safety and outcomes for pediatric eye surgeries by minimizing complications related to intraocular pressure.

How similar studies have gone: While the specific approach of manipulating CO2 levels in this context may be novel, related studies have explored the effects of gas concentrations on ocular conditions, indicating potential for success.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* any child undergoing an eye exam under anesthesia for an ophthalmologic reason.
* children between the ages newborn to 8 years of age.

Exclusion Criteria:

* children who are not having an eye exam under anesthesia.
* children with a known medical diagnosis that affect the eye to be studied
* \* children over the age of 8 years of age.
* \* children with altered cerebral autoregulation, increased intracranial pressure, pulmonary hypertension, or any other condition deemed appropriate by the anesthesiologist.
* children in whom a laryngeal mask airway will not be used

Where it's running

  • University of Pittsburgh Medical Center
    Pittsburgh, Pennsylvania, United States
    Recruiting

Study contacts

  • Principal investigator: Kanwal Nischal, MD,FRCOphth — University of Pittsburgh
  • Study coordinator: Amy Monroe, MPH, MBA
  • Email: monroeal@upmc.edu
  • Phone: 412-623-6382

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.