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Tear Film Thickness Measured Using a Novel Technique

Dry Eye Clinical Trial

Official title:
Tear Film Thickness Measured Using a Novel Technique

Clinical Trial Summary

The aim of this investigation is to determine the thickness of the human preocular tear film using a new method based on laser speckle. This will be a preliminary study to generate "normative" tear film thickness data in normal (i.e., non dry eye) and dry eye subjects in a clinic-based population. In addition, we will examine the short term (i.e., one week) repeatability of the method in a single setting.

The patients classified as having dry eye will also have their tear film thickness measured after instillation of an artificial tear. This will potentially reveal valuable data in retention of effect measured non-invasively as in prior studies that employed a fluorescein tracer.

Clinical Trial Description

We will generate "normative" tear thickness data in normal (i.e., not dry) and dry eyes in human subjects. We will examine short-term repeatability of the method, and we will examine the influence on tear thickness of a viscous eyedrop instilled into the eye. ;

Study Design

Time Perspective: Cross-Sectional

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT01014780
Study type Observational
Source Southern California College of Optometry
Contact
Status Completed
Phase N/A
Start date November 2009
Completion date October 2010
View Details
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