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Efficacy of the Chronic Application of Tear Formulations

Dry Eye Clinical Trial

Official title:
Therapeutic Efficacy of the Chronic Application of Tear Formulations for Dry Eye and Normal Subjects Under Conditions of Environmental Stress

Clinical Trial Summary

The purpose of this study is to determine the therapeutic effect of the chronic application of eye-drops on tear evaporation rate in dry eye and normal subjects exposed to a condition of environmental stress. The effect will be studied in terms of changes in tear physiology and the inflammatory biomarkers on the ocular surface.

Clinical Trial Description

Environmentally induced dry eye is a condition which occurs in otherwise asymptomatic individuals in certain situations, for example with the use of computers, in overheated or air conditioned workplaces and in conditions of low humidity. The most common ocular complaints associated with these environments are burning, dryness, stinging, and grittiness. Although the exact cause of these symptoms is unknown, it is thought that increased tear evaporation rate due to low humidity plays a vital role. The changes in tear film physiology, which occurs in these environments, have traditionally been dealt with by the use of eye drops (particularly the highly viscous variety), which have been shown to be an effective therapeutic option in the treatment of environmental dry eye disease. Previous studies of the use of eye-drops of various formulations has shown improvements in tear physiology in mild to moderate dry eye patients with their use in both acute and chronic application protocols. In this study, an attempt was made to relate the effects on tear physiology induced by variations in environmental conditions to the beneficial effect produced by the use of eye-drops. ;

Study Design

Allocation: Randomized, Intervention Model: Crossover Assignment, Masking: Single Blind (Subject), Primary Purpose: Treatment

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT01384851
Study type Interventional
Source Glasgow Caledonian University
Contact Alan Tomlinson, DSc PhD
Phone 0044 141 331
Email A.Tomlinson@gcu.ac.uk
Status Not yet recruiting
Phase N/A
Start date July 2011
Completion date November 2011
View Details
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