High-resolution Imaging of Tear Film Thickness in Contact Lenses Wearers With Optical Coherence Tomography (OCT). A Pilot Study
- Conditions
- Tear Film ThicknessContact Lens
- Interventions
- Device: Optical Coherence Tomography
- Registration Number
- NCT02713399
- Lead Sponsor
- Medical University of Vienna
- Brief Summary
A refractive error is the most common reason for reduced visual acuity. Myopia, hyperopia, astigmatism and presbyopia belong to the four basic refractive errors and, unfortunately, cannot be prevented. There are different tools to correct them, like spectacles, contact lenses, and refractive surgery. Many different contact lenses are available, the two large groups create rigid contact lenses and soft contact lenses. It is a common knowledge that the presence of a contact lens in the eye divides the tear film into the prelens and postlens tear film layers. In the present study we want to investigate the variability and reproducibility of prelens and postlens tear film thickness measurements.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- UNKNOWN
- Sex
- All
- Target Recruitment
- 30
Not provided
- Participation in a clinical trial in the previous 3 weeks
- Presence of any abnormalities preventing reliable measurements as judged by the investigator
- Pregnancy, planned pregnancy or lactating
Study & Design
- Study Type
- OBSERVATIONAL
- Study Design
- Not specified
- Arm && Interventions
Group Intervention Description Soft Contact Lenses Optical Coherence Tomography healthy subjects wearing soft contact lenses Rigid Contact Lenses Optical Coherence Tomography healthy subjects wearing rigid contact lenses
- Primary Outcome Measures
Name Time Method Pre lens and post lens tear film thickness 2 months
- Secondary Outcome Measures
Name Time Method
Trial Locations
- Locations (1)
Department of Clinical Pharmacology, Medical University of Vienna
🇦🇹Vienna, Austria