Ocular Blood Flow Imaging for Glaucoma Assessment
University of Maryland, Baltimore
Summary
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: * Can the investigators use blood flow to discriminate between eyes with early-stage glaucoma and variable-matched controls? * Can the investigators validate that the XyCAM FC simultaneously captures both stereo fundus photography and ocular blood flow monitoring? Participants will be * measured for their blood pressure, heart rate, height, and weight * dilated with tropicamide * imaged using the XyCAM RI, fundus photography, optical coherence tomography, and standard automated perimetry * imaged using the XyCAM RI while inhaling 100% oxygen through a mask
Description
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…
Eligibility
- Age range
- 18–88 years
- Sex
- All
- Healthy volunteers
- Yes
Inclusion Criteria: * Age 18 and older with binocular vision * Able to provide informed consent * Patient is a healthy control OR is recommended for glaucoma assessment OR diagnosed with moderate to severe glaucoma in at least one eye as determined by Hodapp Anderson Criteria Exclusion Criteria: * The subject has significant media opacity (e.g., a visually significant cataract or significant corneal scar) * The subject has previous ocular surgery other than uncomplicated cataract extraction, laser trabeculoplasty (ALT or SLT), or YAG capsulotomy * The subject has prior ocular disease other…
Interventions
- DeviceXyCAM 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.
Location
- University of Maryland Eye Associates at RedwoodBaltimore, Maryland