An interventional study of XyCAM with oxygen in Glaucoma, sponsored by University of Maryland, Baltimore. Recruiting at 1 site in United States. Open to participants aged 18 Years to 88 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-07-02.
Sponsored by University of Maryland, Baltimore · Not applicable, Interventional, and Diagnostic
The goal of this clinical trial is to investigate the use of an FDA-cleared retinal blood flow imaging instrument called the XyCAM RI and XyCAM FC (Vasoptic Medical, Inc., Columbia, MD) in glaucoma management.
The main question it aims to answer are:
Participants will be
The investigators will capture images of the participant's retina using the XyCAM RI or XyCAM FC ("test data") and by color fundus photography, optical coherence tomography (OCT), and standard automated perimetry (SAP) - the "standard clinical data". The investigators will perform five tests. The first two tests will be conducted using the XyCAM RI or XyCAM FC to obtain "test data". The final two tests will be conducted using routine clinical instruments to obtain "standard clinical data". The investigators will administer eye drops (Tropicamide) to dilate the participant's pupils prior to the first test. Tropicamide is a chemical that causes pupil dilation and is commonly used by doctors to examine the participant's eyes. The entire set of test data sessions should last less than eighty (80) minutes with an additional 60 minutes for carrying out the necessary procedures and imaging using the standard clinical data.
1,419 studies on the registry are indexed under Glaucoma; 223 are open to participants now.
This study's planned enrollment of 150 is above the median of 61 across 964 interventional studies indexed under Glaucoma.
Browse Glaucoma studies →University of Maryland, Baltimore is the lead sponsor of 700 studies on the registry; 132 are open to participants now.
Of its 92 completed or terminated interventional studies of FDA-regulated products, 66 (72%) have results posted.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
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.
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
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.
ALT and AST (liver enzymes)
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
All control participants will be first be imaged pre-intervention.
Device: XyCAM with oxygen
All participants with glaucoma will be first be imaged pre-intervention.
Device: XyCAM with oxygen
All participants with pre-perimetric glaucoma will be first be imaged pre-intervention.
Device: XyCAM with oxygen
After the standard imaging protocols, participants will be asked to inhale 100% oxygen through a mask and will be re-imaged using the XyCAM RI or XyCAM FC.
Blood flow velocity measure
Dynamic video of ocular blood flow
Time frame: through study completion, an average of 1 year
Plan to share: No
Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.
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