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Tear Film Thickness clinical trials

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NCT ID: NCT02713399 Recruiting - Contact Lens Clinical Trials

High-resolution Imaging of Tear Film Thickness in Contact Lenses Wearers With Optical Coherence Tomography (OCT). A Pilot Study

Start date: March 16, 2016
Phase:
Study type: Observational

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.

NCT ID: NCT00469521 Completed - Tear Film Thickness Clinical Trials

Pilot Study Evaluation of 2 Artificial Tears. Evaluation of TBUT, Tear Meniscus Height and Tear Thickness

Start date: n/a
Phase: Phase 4
Study type: Interventional

To determine baseline tear thickness and improvement immediately post installation of two artificial tear solutions:(9582X) and Allergan Refresh Tears.