Dual Wavelength OCT

Combined Coaxial Optical Coherence Tomography System to Image the Retina and Choroidal Structures and Estimate Tissue Reflectivity in Healthy and Diseased Retinas

The purpose of this research is the evaluation of a combined coaxial optical coherence tomography (OCT) system to image retina/choroid and to evaluate if post processing of the data can give us insights into property of the tissue imaged.

Study Overview

Detailed Description

Histology studies have shown that many disorders of the retina and choroid such as age-related macular degeneration is associated with a build up abnormal deposits, in the retina or subretinal space. Being able to detect subtle changes in retina and choroidal structure is crucial for better understanding and monitoring of this potentially blinding condition. This study aims to commercially available Spectralis® OCT-system with a central wavelength of 880nm explore the ability of a confocal scanning laser ophthalmoscope (cSLO) for OCT imaging utilising a modified by the addition of a longer wavelength OCT (1075nm , a wavelength deployed on other commercially available OCT scanners). Other commercially available OCT scanners used longer wavelengths to allow deeper penetration and enhanced visualisation of subretinal tissue but less inner retinal detail. Combing both wavelengths could have the advantage of allowing optimum viualisation of inner and subretinal structures. The ability of the systems to acquire repeatable and good quality images of retinal and choroidal structural detail at matching location and compare the results from the two instruments will be evaluated. In addition processing of the images reflectivity with two different wavelength should give us insight into the nature of any abnormal material.

Study Type

Observational

Enrollment (Actual)

60

Contacts and Locations

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

Study Locations

      • London, United Kingdom, EC1V 2PD
        • Moorfields Eye Hospital NHS Foundation Trust, 162 City Road

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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

People with diseased retina

Description

Inclusion Criteria:

  • Age>18
  • Ability to consent
  • Abnormal reflectivity detected in at least one eye in the retina or choroid on OCT testing undertaken as part of routine
  • clinical care

Exclusion Criteria:

  • Media opacities on conventional OCT testing taken on the day of the study visit, that prevents adequate visualisation of
  • the retina and/or choroidal substructures in the opinion of the investigator
  • Inability to undertake to undertake two additional OCT scans on each eye in addition to their conventional OCT.

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

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Diseased Retina
Taking images of the retina with two wavelengths

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Test retest reliability
Time Frame: 14 months
Comparison of device test retest variability with those of standard OCT for measurement of tissue reflectivity.
14 months

Collaborators and Investigators

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

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 (Actual)

February 15, 2019

Primary Completion (Actual)

November 30, 2019

Study Completion (Actual)

October 21, 2020

Study Registration Dates

First Submitted

May 31, 2018

First Submitted That Met QC Criteria

February 15, 2019

First Posted (Actual)

February 18, 2019

Study Record Updates

Last Update Posted (Actual)

April 12, 2022

Last Update Submitted That Met QC Criteria

April 4, 2022

Last Verified

April 1, 2022

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

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.

Clinical Trials on Retinal Degeneration

Clinical Trials on Combined Coaxial Optical Coherence Tomography

3
Subscribe