Developing and Testing a Model to Identify Preventive Vision Loss Among Older Patients in General Practice

Sponsor
University of Copenhagen
Study ID
NCT07015034
Status
Recruiting
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Conditions

Eligibility Criteria

Sex
ALL
Age
70 Years - N/A
Healthy Volunteers
Accepted

Interventions

  • focus on vision impairment in older patients in general practice — OTHER
    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.

Study Details

In this cohort study, the investigators will test vision screenings in Danish general practice for patients over 70 years of age with minimum one chronic condition. The main outcome is detection of vision impairment and secondary outcome is detection of conditions needing ophthalmologic follow-up but not presenting vision impairment at present time.

Key Dates

First listed
Jun 11, 2025
Start date
May 15, 2024
Status verified
Apr 2026
Primary completion
Jul 30, 2026
Completion
Jul 15, 2027

Study Design

Enrollment
460 participants (estimated)
Allocation
NA
Intervention model
SEQUENTIAL
Primary purpose
SCREENING

Arms

  • Other: 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.

Primary Outcome Measure

Recruitment feasibility [ Time Frame: From invitation to participate to enrollment within 4 weeks ]

Central Contacts

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