No registrations found.
ID
Source
Brief title
Health condition
Glaucoma
Sponsors and support
Intervention
Outcome measures
Primary outcome
Measurement of contrast sensitivity on a time varying background.
Secondary outcome
Temporal modulation fquequencies
Background summary
To determine the influence of dynamic light conditions on visual functioning in glaucoma. For this purpose we measure (1) the contrast sensitivity to a small stimulus at a time-varying background luminance and (2) the critical fusion frequency (CFF), which is the highest frequency of flicker that can be distinguished from steady state (temporal sensitivity), as a function of background luminance.
Study objective
The objectives of this study is to determine The influence of dynamic light conditions on visual function of glaucoma patients.
Study design
Cross-sectional
Intervention
None
Inclusion criteria
Glaucoma patients (age 40-70) from the outpatient clinic ophthalmology UMCG, who provide written informed consent.
Healthy subjects (age 18-70) who have signed in, without ophthalmic abnormalities and provide written informed consent.
Exclusion criteria
- Visual acuity below 1.0 (below 50 years of age) or below 0.8 (above 50 years of age).
- Visual field defects not caused by glaucoma
Healthy subjects:
- Subjects with an eye disease.
- Subjects with a first degree relative with glaucoma, or with high eye pressure in the past.
- Visual acuity below 1.0 (below 50 years of age) or below 0.8 (above 50 years of age).
- Visual field defects which are not understood
Design
Recruitment
Followed up by the following (possibly more current) registration
Other (possibly less up-to-date) registrations in this register
No registrations found.
In other registers
| Register | ID |
|---|---|
| NTR-new | NL6342 |
| NTR-old | NTR6526 |
| CCMO | NL61403.042.17 |
| OMON | NL-OMON45610 |