Collecting Data on Retinal Blood Blood Flow and Blood Vessel Shape/Appearance Using an Investigational Device, XyCAM CRE, and to Then Compare Those Images With Images Collected From a Patient's Routine Clinical Examination.

This XyCAM CRE Camera Study is a prospective longitudinal observational cohort imaging study. It is a non-randomized, non-masked, early feasibility study designed to collect retinal imaging data from healthy adults with normal retinal findings and from patients diagnosed with retinal and ocular diseases.

The study will consist of two phases: 1) screening and 2) testing. Patients presenting for routine ophthalmic standard of care evaluations will be screened for eligibility.

Eligible participants will complete four testing visits scheduled approximately 4 months apart (±2 months). At each testing visit, the Principal Investigator (PI) and designated study personnel will document participants' clinical status, obtain intraocular pressure (IOP) and blood pressure (BP) measurements, and acquire repeat XyCAM CRE retinal images. No additional follow-up will be required after completion of Visit 4 procedures.

The XyCAM CRE is an investigational, noninvasive optical imaging system manufactured by Vasoptic Medical, Inc. The device acquires rapid sequential digital retinal images while illuminating the retina with a low-power laser. Proprietary software algorithms analyze the image sequences to estimate retinal blood flow dynamics and generate additional quantitative vascular and structural measurements that may have diagnostic or disease-monitoring value.

The purpose of this study is to investigate the clinical utility of retinal and choroidal blood flow imaging and to evaluate the potential role of XyCAM CRE-derived measurements in the diagnosis and management of ocular disease. Up to 350 participants will be enrolled at Stuart Terry Eye Associates

During study visits, retinal imaging data obtained using XyCAM CRE will be compared with data obtained from established retinal imaging modalities currently used in ophthalmic clinical practice, including Color Fundus Photography (CFP), Optical Coherence Tomography (OCT), Optical Coherence Tomography Angiography (OCTA), and Fluorescein Angiography (FA). The study will utilize:

• Laser Speckle Contrast Imaging (LSCI) using the investigational XyCAM CRE system; and
• Retrospective and/or clinically acquired reference imaging data from CFP, OCT, OCTA, and FA obtained using standard clinical imaging systems.

LSCI-based retinal blood flow imaging has demonstrated potential as a diagnostic biomarker for assessing disease presence, severity, and progression. Accordingly, LSCI technology implemented in the investigational XyCAM CRE system is the primary imaging modality under evaluation in this study.

XyCAM CRE will be used to obtain retinal blood flow (RBF) measurements from one or more retinal regions. Imaging data will be stored in de-identified form and analyzed to generate region-specific RBF metrics for comparison with participant clinical status and measurements derived from reference imaging modalities.

This study also seeks to establish a broader reference dataset of retinal blood flow measurements obtained from both healthy and diseased eyes. Currently, there is limited widely accepted normative retinal blood flow data available for clinical comparison. Data collected in this study may contribute to future statistical analyses and support the development of reference datasets for subsequent clinical and research applications.

Alterations in retinal perfusion are associated with multiple vision-threatening ocular conditions, including glaucoma, diabetic retinopathy, retinal vein occlusion, and age-related macular degeneration, as well as systemic and neurologic disorders such as cardiovascular disease and cognitive impairment. In addition, intravitreal anti-vascular endothelial growth factor (anti-VEGF) therapy may influence retinal blood flow, suggesting a potential role for retinal perfusion imaging in treatment monitoring and clinical decision-making.

Through longitudinal retinal and choroidal blood flow imaging, this study aims to further characterize the relationship between microvascular perfusion abnormalities and the progression of common retinal diseases.

Inclusion criteria

• The Subject present to the ophthalmology/optometry clinic for eye examination. A signed/dated consent form has been obtained from a Subject who is capable of giving informed consent and compliant with the restrictions and requirements if the protocol.

The Subject is 21 years old with binocular vision.

Exclusion criteria

• The Subject has significant media opacity (eg: a significant corneal scar) The Subject's medical history or health status suggests that the Subject may have an adverse reaction to administration of tropicamide or fluorescein dye.

The Subject has more than 15 dioptors of refractive error. The Subject is less that 21 years of age. The Subject is unable to follow instructions or otherwise unable to complete the study procedures.

The Subject has medical conditions such as nystagmus that will likely prevent the Subject from being able to hold their gaze steady during imaging, reducing the likelihood that high quality data can be acquired from the Subject.

The Subject is pregnant.