A comparison of widely used clinical contrast sensitivity tests: the relation between defocus specific contrast sensitivity and higher order aberrations.
Completed
- Conditions
- Measurements in 48 healthy subjects aged 20 to 35 years (24 subjects) and 55 to 70 years (24 subjects).
- Registration Number
- NL-OMON20124
- Lead Sponsor
- niversity Hospital Groningen, department ophtalmologyHanzeplein 1Postbus 30.0019700 RB GroningenThe Netherlands Tel: (+31)050-3612510Fax: (+31)050-3611709AMO (advanced medical optics) Groningen B.V.Van Swietenlaan 59728 NX GroningenTel: (+31)050-5296600 Fax: (+31)050-5267860
- Brief Summary
/A
- 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;
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 /><br>2. RMS as function of age;<br /><br>3. Contrast sensitivity as function of age;<br /><br>4. Influence of defocus on contrast sensitivity.