Optical Coherence Tomography Angiography and in Fluorescein Angiography in Diabetic Retinopathy

December 29, 2021 updated by: Esraa Reda Mohamed Mahmoud, Assiut University

Comparison Between Findings in Optical Coherence Tomography Angiography and in Fluorescein Angiography in Patients With Diapetic Retinopathy

Diabetic retinopathy (DR) is the leading cause of decreased vision in working age people. Patients with DR can develop macular edema and proliferative retinopathy which are major causes of visual impairment [1]. The potential of OCTA regarding diagnosis and follow up of DR has been shown in previous studies [2-4]. At present fluorescein angiography (FA) represents the gold standard in the diagnosis and staging of DR [5]. With FA vascular lesions like micro aneurysms (MAs), the size of areas of non-perfusion and of the foveal avascular zone (FAZ) and retinal neovascularisations can be reliably identified [6]. Al-though the capabilities of FA are well known, its use also contains some risks related to the intravenous injection of the dye, which can cause nausea, vomiting and allergic re actions and even anaphylactic shock [7]. Besides that, it also requires time and trained personnel [8]. Image acquisition by OCTA in contrast is not as time consuming and can be performed without taking any risks. Additionally, it provides a 3 dimensional cross sectional view of the retinal and choroidal layers with micro meter depth resolution, providing depth selective information of the retinal vasculature. This facilitates accurate diagnosis and follow up of retinal vascular diseases since significant insights into both morphology and perfusion status can be obtained simultaneously. Although various artifacts appear in OCTA images, a qualitative assessment is mostly possible [9].Early changes to be seen in OCTA in patients with non-proliferative DR are vascular remodelling bordering the FAZ, vascular tortuosity, narrowing of capillary lumen and capillary dilatation. These changes cannot be seen in the same manner in FA [10].In this study we investigated the size of the FAZ and the count of MAs in patients with DR.

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Anticipated)

40

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

  • Name: Wael Prof Mohamed Ahmed Soliman

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

45 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

N/A

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

All included patients are planned to have FFA and OCTA en face 3x3mm

Description

Inclusion Criteria:

  • All Pts with confirmed type 2 diabetes of at least 6 months. Best corrected visual Acuity of 6/60 or higher (using asnellen chart) in each eye

Exclusion Criteria:

  • Dense media opacities interfere with image FFA as dense cataract . Previous TTT mainly retinal laser photocoagulation or intra vitreal injection. History of ocular disease as glaucoma and retinal vascular occlusion . Previous ocular surgery.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Compare findings in OCTA.Ffa in DR
Time Frame: Baseline
Number of microaneurysm.degree of ischemia.size of FAZ
Baseline

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Assiut University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Anticipated)

September 1, 2022

Primary Completion (Anticipated)

September 1, 2023

Study Completion (Anticipated)

February 1, 2024

Study Registration Dates

First Submitted

December 29, 2021

First Submitted That Met QC Criteria

December 29, 2021

First Posted (Actual)

January 13, 2022

Study Record Updates

Last Update Posted (Actual)

January 13, 2022

Last Update Submitted That Met QC Criteria

December 29, 2021

Last Verified

December 1, 2021

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • FFDR

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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