A comparison of widely used clinical contrast sensitivity tests: the relation between defocus specific contrast sensitivity and higher order aberrations
Completed
- Conditions
- o condition, healthy personNot ApplicableNo condition
- Registration Number
- ISRCTN66724598
- Lead Sponsor
- niversity Medical Center Groningen (The Netherlands)
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Completed
- Sex
- Not specified
- Target Recruitment
- 48
Inclusion Criteria
No ocular pathology
Exclusion Criteria
1. Refractive correction larger than +/- 2 D
2. Cylindrical correction larger than 1.5 D
3. Cylindrical axis more then 20° from the horizontal or vertical axis
Study & Design
- Study Type
- Interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Selection of the contrast sensitivity test which predicts the spherical aberration most reliably.
- Secondary Outcome Measures
Name Time Method 1. Spherical aberration as function of age<br>2. RMS as function of age<br>3. Contrast sensitivity as function of age<br>4. Influence of defocus on contrast sensitivity