Developing and Testing a Model to Identify Preventive Vision Loss Among Older Patients in General Practice
NCT ID: NCT07015034
Last Updated: 2025-06-11
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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RECRUITING
NA
460 participants
INTERVENTIONAL
2024-05-15
2027-07-15
Brief Summary
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Detailed Description
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Methods: Investigators apply the Medical Research Council framework for complex interventions to develop a primary care intervention with the GP as a key actor, aimed at identifying and coordinating care for patients with low vision. The development process will engage patients, relatives and relevant health professional stakeholders. The investigators will pilot test the feasibility of the intervention in a real-world general practice setting. The intervention model will be developed through a participatory approach using qualitative and creative methods such as graphical facilitation. The project aims to explore the potentials and limitations of general practice in relation to detection of preventable vision loss.
Ethics and dissemination: Ethics approval is obtained from local authority and the study meets the requirements from the Declaration of Helsinki. Dissemination is undertaken through research papers and to the broader public through podcasts and patient organisations.
Conditions
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Study Design
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NA
SEQUENTIAL
SCREENING
NONE
Study Groups
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Three vision tests in general practice
All patients recruited in general practice are asked to fill out a patient questionnaire and examined:
\- Collenbrander Mixed contrast card: testing near vision binocularly at 40 cm, using both 100% and 10% contrast.
\- Amsler Test: Conducted for both eyes to check for central vision issues.
\- Visual Field Test: Performed using the Donders method to assess peripheral vision, conducted for both eyes.
After tests in general practice, all patients undergo a comprehensive vision assessment at local optician shops, which include the following tests:
* Habitual Vision Testing: Near and distance vision with habitual glasses.
* Best Corrected Distance Vision: Monocular and binocular.
* Intraocular Pressure Measurement Assessed using air tonometry or Icare.
* Ocular Imaging: 3D peripapillary and macula optical coherence tomography (OCT) scans, and fundus photography.
A project ophtalmologist analyze patient-data from optometrists.
focus on vision impairment in older patients in general practice
GP or GP nurse carry out the three vision tests. All patients visit optician shop collaborating with the project. An ophthalmologist review data from optometrists and provide an epicrisis to general practice. In case of acute conditions, the ophthalmologist is responsible for expedient treatment. If the patient needs further control by ophthalmologist within 12 month waiting time, general practice are responsible for referring the patient.
Interventions
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focus on vision impairment in older patients in general practice
GP or GP nurse carry out the three vision tests. All patients visit optician shop collaborating with the project. An ophthalmologist review data from optometrists and provide an epicrisis to general practice. In case of acute conditions, the ophthalmologist is responsible for expedient treatment. If the patient needs further control by ophthalmologist within 12 month waiting time, general practice are responsible for referring the patient.
Eligibility Criteria
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Inclusion Criteria
* One or more chronic diseases
* Are followed by GP du to chronic disease
Exclusion Criteria
* Known eye-diseases or are currently followed by private ophtalmologist
* Not able to understand Danish
70 Years
ALL
Yes
Sponsors
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University of Copenhagen
OTHER
Responsible Party
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Catharina Thiel Sandholdt
Assistant Professor
Principal Investigators
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Frans B Waldorff
Role: PRINCIPAL_INVESTIGATOR
Center for Almen Medicin, KU
Locations
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Søndre Lægehus (GP practice)
Køge, Køge, Denmark
Louise Uhre General Practice
Køge, , Denmark
Countries
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Central Contacts
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Facility Contacts
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References
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Sandholdt CT, Jonsson ABR, Reventlow S, Bach-Holm D, Line K, Kolko M, Jacobsen MH, Mathiesen OH, Waldorff FB. DETECT: DEveloping and testing a model to identify preventive vision loss among older paTients in gEneral praCTice - protocol for a complex intervention in Denmark. BMJ Open. 2023 May 29;13(5):e069974. doi: 10.1136/bmjopen-2022-069974.
Other Identifiers
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869353
Identifier Type: OTHER_GRANT
Identifier Source: secondary_id
869353
Identifier Type: -
Identifier Source: org_study_id
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