To determine the test-retest variability of Compass perimetry at the edges of glaucomatous scotomas and compare it with the Humphrey Field Analyzer.
ID
Source
Brief title
Condition
- Glaucoma and ocular hypertension
Synonym
Research involving
Sponsors and support
Intervention
Outcome measures
Primary outcome
Test-retest variability of visual field locations surrounding scotoma borders.
Secondary outcome
N.a.
Background summary
Early and accurate detection of progression is essential for preventing further
irreversible visual field loss in the glaucoma patient. Visual field loss is
most commonly tested with the Humphrey Field Analyzer (HFA). However, the HFA
shows high measurement variability, notably at the borders of scotomas, making
it difficult to determine if a scotoma is stable or shows progression. This
variability may in part be due to gaze instability. By using an eye tracker
that can compensate for this gaze instability, the Compass fundus perimeter
(CMP) could lower the variability at scotoma borders. However, the test-retest
variability at the edges of scotomas with the CMP has not yet been explored.
Study objective
To determine the test-retest variability of Compass perimetry at the edges of
glaucomatous scotomas and compare it with the Humphrey Field Analyzer.
Study design
Prospective cross-sectional study.
Study burden and risks
Visual field testing with the HFA is part of usual care. Each patient will
undergo 2 study visits. Each study visit an examination with the Compass
perimeter and an examination with the HFA perimeter, using the standard 24-2
test pattern, will be performed. Added burden will be 3 hours in total for each
patient. Risks are negligible.
Schiedamse Vest 180
Rotterdam 3011 BH
NL
Schiedamse Vest 180
Rotterdam 3011 BH
NL
Listed location countries
Age
Inclusion criteria
Glaucoma
Age 40 to 80 years
Vision 0.3 logMar of better
3 or more reliable HFA tests in last 5 years
Exclusion criteria
Ocular surgery (uncomplicated cataract surgery and/or glaucoma surgery in
either eye performed more than 6 months ago excepted)
Ocular pathology other than glaucoma that can affect the visual field
Design
Recruitment
Medical products/devices used
Followed up by the following (possibly more current) registration
No registrations found.
Other (possibly less up-to-date) registrations in this register
No registrations found.
In other registers
| Register | ID |
|---|---|
| CCMO | NL70770.078.19 |