Contact Lens Clinical Trial
Official title:
High-resolution Imaging of Tear Film Thickness in Contact Lenses Wearers With Optical Coherence Tomography (OCT). A Pilot Study
NCT number | NCT02713399 |
Other study ID # | OPHT-150116 |
Secondary ID | |
Status | Recruiting |
Phase | |
First received | |
Last updated | |
Start date | March 16, 2016 |
Est. completion date | November 2023 |
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.
Status | Recruiting |
Enrollment | 30 |
Est. completion date | November 2023 |
Est. primary completion date | September 2023 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | 18 Years and older |
Eligibility | Inclusion criteria - Men and women aged over 18 years - Soft or rigid contact lenses wearers - Schirmer Test = 10 mm/5 min - Tear Breakup Time (TBUT) =10 seconds Exclusion Criteria: - 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 |
Country | Name | City | State |
---|---|---|---|
Austria | Department of Clinical Pharmacology, Medical University of Vienna | Vienna |
Lead Sponsor | Collaborator |
---|---|
Medical University of Vienna |
Austria,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Pre lens and post lens tear film thickness | 2 months |
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