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Retinal DegenerationNCT02814435

Quality of Life Measures in Patients With Retinal Degeneration

An observational study of Retinal Degeneration, run by University of Oxford at 1 site in United Kingdom.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Inherited retinal degeneration (IRD) is a major cause of blindness and partial loss of vision cases in the UK and starts at an early age. The purpose of this observational study is to use the results of two questionnaires and a computerised test testing contrast sensitivity, to assess the impact of IRD on quality of… Read more about this study

Who is it for?
Ages 18 to 85 yearsHealthy volunteers can take part
Conditions the study is for
Retinal Degeneration
What is being tested?
Questionnaire and Computerised contrast sensitivity function test
How many people
90 participants
Where
1 siteUnited Kingdom
Study dates
Jul 2016to Oct 2017
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 85 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Study population: 60 patients with inherited retinal degeneration will be recruited from the outpatient clinic in the Oxford Eye Hospital. 30 healthy controls will be recruited from advertising around the OUH hospitals and the University of Oxford.

Who may be able to join

  • Participant is willing \& able to give informed consent for participation in the study.
  • Male or female, aged 18 - 85.
  • A clinical or genetic diagnosis of retinal degeneration or normal age and sex-matched controls without known retinal disease.
  • Able to participate in visual function testing.

Who cannot join

  • The participant may not enter the study if any of the following apply:
  • 1) they have a pre-existing amblyopia or squint;
  • 2) they have any other retinal problems that may confound the measures assessed.

Trial locations and contacts

1 site in 1 country.

United Kingdom1 site
  • Oxford Eye Hospital

    Oxford, OX3 9DU

Other trials in United Kingdom

About this study

Inherited retinal degeneration (IRD) is a major cause of blindness and partial loss of vision cases in the UK and starts at an early age. The purpose of this observational study is to use the results of two questionnaires and a computerised test testing contrast sensitivity, to assess the impact of IRD on quality of life. This study will involve collecting data from patients with IRD, but also collecting data from normal controls.

Read the detailed description

IRD presents a significant burden on the NHS as well as on the individual and families. IRDs are particularly difficult in a family situation due to guilt and other complex emotions related to inheritance patterns. Poorer mental health has been reported in patients with retinitis pigmentosa, manifesting in a range of ways including stress, depression and anxiety, particularly as the disease progresses. This is most probably caused by the uncertainty of the disease process and the progressive nature of the degeneration.

Recent work has reported that quality of life significantly deteriorates with a drop in visual field diameter of 20 degrees or a drop in visual acuity lower then LogMAR 0.3 (equivalent to 6/12). Contrast sensitivity is often used in conjunction with VA to assess visual capabilities. It is a measure of the ability to see reduced contrast and has a major impact on utility of vision. Relating contrast sensitivity function to quality of life will provide valuable information about whether this aspect of vision is a critical measure for patient health. This is especially important as novel treatments are being developed for the treatment of IRDs.

Being tested
Questionnaire, Computerised contrast sensitivity function test
Keywords
Retina, Retinal Degeneration, Quality of Life Measures
Medical subject headings
Retinal Degeneration

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • QuestionnaireOther

    The participants will answer two questionnaires. These are the NEI VFQ-25 and the DLTV (daily living tasks of vision).

  • Computerised contrast sensitivity function testOther

    This test involves the patient identifying whether bars on a screen are horizontal or vertical. It is designed to measure contrast sensitivity.

Study groups in NCT02814435
Study groupRoleWhat they receive
PatientsPatients with inherited retinal degeneration will answer two questionnaires and undergo a computerised contrast sensitivity function test.
Receives: Other: Questionnaire; Other: Computerised contrast sensitivity function test
Normal controlsNormal controls recruited by advertising will answer two questionnaires and undergo a computerised test that assess contrast sensitivity function.
Receives: Other: Questionnaire; Other: Computerised contrast sensitivity function test

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Impact of inherited retinal degeneration on quality of life measures.

    This will be assessed by comparing questionnaire results between different inherited retinal degeneration types.This will be determined by using ANOVA testing to compare scores caused by different genetic mutations, allowing us to relate mutations causing central versus peripheral visual loss to the quality of life measures.

    Measured: May 2016 to May 2017

Secondary outcomes (1)
  1. Effect of contrast sensitivity function on quality of life.

    Contrast sensitivity function will be related to the questionnaire results using ANOVA testing \& correlation analysis.

    Measured: May 2016 to May 2017

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted27 Jun 2016 (estimated)
  2. Study startJul 2016
  3. Primary completionOct 2017
  4. Study completionOct 2017

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Case-control
Time perspective
Cross-sectional
Enrolment
90 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02814435
Sponsor's protocol ID
QoLMeasuresIRD
Status last verified
Nov 2018
First submitted
23 Jun 2016
Last updated
13 Nov 2018
Results posted
No
Data monitoring committee
No
Individual data sharing
Undecided

Questions about this trial

What is this clinical trial studying?

An observational study of Retinal Degeneration, run by University of Oxford at 1 site in United Kingdom.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 13 Nov 2018. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United Kingdom. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Impact of inherited retinal degeneration on quality of life measures. (time frame: May 2016 to May 2017). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 13 Nov 2018.

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