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Refractive Error clinical trials

View clinical trials related to Refractive Error.

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NCT ID: NCT01882465 Terminated - Refractive Error Clinical Trials

Corneal Staining Associated With Daily Disposable Beauty Contact Lenses

Start date: August 2013
Phase: N/A
Study type: Interventional

Limbal ring contact lenses enhance the look of the eye by adding pigmentation in a ring pattern to the contact lens. The purpose of this investigation is to determine if corneal staining increase is dependent upon the lens pigment location.

NCT ID: NCT01365884 Terminated - Refractive Error Clinical Trials

First-Sight Refractive Error Correction: Direct Comparison to Autorefraction Results in Children 7 to 18 Years of Age

Start date: August 5, 2011
Phase:
Study type: Observational

Proof of concept study to compare the best corrected visual acuity obtained via First-Sight lenses with the autorefraction in children.

NCT ID: NCT00639353 Terminated - Myopia Clinical Trials

Silicone Hydrogel Contact Lenses on Low Astigmatism in Japan

Start date: February 2008
Phase: N/A
Study type: Interventional

This study seeks to evaluate the clinical performance of a recently released contact lens designed to correct astigmatism to an established contact lens that has historically been used in these patients.

NCT ID: NCT00634101 Terminated - Myopia Clinical Trials

A Comparison of Two Daily Disposable Contact Lenses

Start date: January 1, 2008
Phase: N/A
Study type: Interventional

This study seeks to evaluate the clinical performance of a new CE marked daily disposable contact lens that contains a wetting agent to a recently improved daily disposable contact lens.

NCT ID: NCT00585026 Terminated - Presbyopia Clinical Trials

Randomized Clinical Trial of Bifocal Lenses Versus Computer-specific Progressive Addition Lenses

Start date: October 2006
Phase: Phase 3
Study type: Interventional

This is a research study designed to test the utility of D-shaped bifocal lenses and PRIO Computer Lenses for persons using a computer. We hypothesize that lenses specially designed for computer use may allow more comfortable and productive work on a computer.