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Symptom Response in Normal and Dry Eye Patients Secondary to Application of a Menthol-Containing Eyedrop (Rohto® Hydra)

Dry Eye Clinical Trial

Official title:
An Open-Label, Single-Center Study to Evaluate Symptom Response and Tear Film Cooling Dynamics of Normal and Dry Eye Patients Secondary to Application of a Menthol-Containing Eyedrop (Rohto® Hydra)

Clinical Trial Summary

The purpose of the study is to analyze the sensation to eye drops containing menthol in people with healthy eyes and in people with dry eyes. This study also examines the temperature of your eye using an Infrared Camera.

Clinical Trial Description

Dry eye disease (DED) has been defined as a multifactorial disease of the tears and ocular surface that results in symptoms of discomfort, visual disturbance, and tear film instability with potential damage to the ocular surface. It is accompanied by increased osmolarity of the tear film and inflammation of the ocular surface1. An estimated 25 million Americans are reported to have dry eye disease (DED)2, which is a number that will only increase with the U.S. aging population3. The only treatment currently available in the U.S. targets inflammation on the ocular surface. Because dry eye is a complicated disease that encompasses many conditions of the eye, diversified ways to treating the disease are necessary. Some recent studies suggests that some Dry Eye symptoms are caused by corneal cold thermoreceptors (such as TRPM8) chronically firing at below-normal thresholds. It thus logically follows that dry eye patients could be distinguished from normal patients by possessing higher symptom responses secondary to topical application of menthol, a potent agonist of TRPM8. If dry eye patients indeed have lower threshold firing of TRPM8, agonizing TRPM8 with menthol will elicit a more severe symptom response, given equal concentrations across populations. To fully elucidate this relationship between TRPM8 agonists, sensation, and tear film cooling, two dry eye populations will be tested - one population which has exhibited symptom response to a previous dry eye agent, and one population with no symptom response to the same agent. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT02985827
Study type Interventional
Source ORA, Inc.
Contact
Status Completed
Phase Phase 4
Start date December 2015
Completion date January 2016
View Details
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