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Can we Predict COronary Resistance By EYE Examination ? (COREYE)

NCT03739073 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 101

Last updated 2025-12-19

No results posted yet for this study

Summary

Prospective interventional study, open, non-comparative and non-randomized. The research concerns physiological parameters of the coronary and ocular blood circulation.

At the coronary level, the curves of pressure and Doppler flow will be extracted from ComboMap® (Philips). The coronary microvascular resistances, basal and hyperemic, will be determined by the average ratio of the distal pressure and flow.

At the ocular level, a fundus oculi and an OCTA (angiography by tomography in optical coherence) examination will be performed. The measures of the FFR and the coronary microvascular resistance will be determined by a guidewire allowing measures of pressure and by a guidewire allowing measures of Doppler flow (ComboWire®, Volcano), in 123 patients with intermediate stenosis of the left anterior descending artery (LDA). Topological parameters characterizing the retinal area and choriocapillaries will be determined by statistical approaches and mathematical morphology.

To establish a predictor of the coronary microvascular resistance from the eye vascular parameters, we shall use a non-linear regression by supervised machine learning. The main cardiovascular risk factors (hypertension, diabetes, dyslipidemia, age, sex) will be part of predetermined input features for the machine learning.

Conditions

Interventions

OTHER

OCTA (angiography by tomography in optical coherence)

The study concerns patients with intermediate stenosis of the left anterior descending artery (LDA). A fundus oculi and an OCTA (angiography by tomography in optical coherence) examination will be performed; it's a non-invasive imaging test. OCT uses light waves to take cross-section pictures of your retina and then ophthalmological examination data will correlate with coronary angiography.

Sponsors & Collaborators

  • Hospices Civils de Lyon

    lead OTHER

Study Design

Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2018-10-04
Primary Completion
2024-03-20
Completion
2024-03-20

Countries

  • France

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03739073 on ClinicalTrials.gov