Status:
COMPLETED
Comparison of Four Methods for Entering the Gap Position of Landolt Cs
Lead Sponsor:
Aalen University
Conditions:
Quality Control
Validation Study
Eligibility:
All Genders
18-80 years
Brief Summary
The aim of this study is to investigate and compare the validity of four different input methods for Landolt Cs, i.e. the proportion of correct gap positions in relation to the total number of perform...
Detailed Description
The measurement of visual acuity is the most frequent and one of the most important ophthalmological functional investigations. Therefore, it is particularly important to find a measuring procedure wi...
Eligibility Criteria
Inclusion
- Age: ≥ 18 years
- Informed consent
- (Distance) visual acuity with best correction: ≥ 0.8
- (Distant) ametropia: ≤+8.0 Diopters (spherical equivalent)
- Anisometropia ≤ 3 dpt
- Astigmatism ≤ 2.5 dpt
Exclusion
- Prolonged reaction time caused by drugs (medications)/ drugs/alcohol
- Movement disorders (of hands) such as Parkinson's disease
- Indication of amblyopia (strabismus surgery, occlusion therapy etc.)
- Eye movement disorders/double vision
- Defective stereo vision (according to LANG \[I\] stereo test)
- Presence of a relative afferent pupil defect ("swinging flashlight test)
- Any hint of visual pathway lesion or other chronic or progressive eye disease
Key Trial Info
Start Date :
July 22 2022
Trial Type :
OBSERVATIONAL
Allocation :
ACTUAL
End Date :
June 30 2023
Estimated Enrollment :
24 Patients enrolled
Trial Details
Trial ID
NCT04299659
Start Date
July 22 2022
End Date
June 30 2023
Last Update
July 20 2023
Active Locations (1)
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1
Ulrich SCHIEFER
Aalen, Deutschland, Germany, 73430