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Active clinical trials for "Refractive Errors"

Results 251-260 of 326

Formula Identification (FID) 114657 in Contact Lens Wearers

Refractive Error

The purpose of this study is to evaluate the thickness of the pre-lens tear lipid layer after 2 hours of lens wear with use of FID 114657 compared to saline control.

Completed15 enrollment criteria

Tear Film Stability of DAILIES® AquaComfort Plus® Contact Lenses vs. MyDay® Daily Disposable Contact...

Refractive Error

The purpose of this study is to evaluate tear film stability of DAILIES® AquaComfort Plus® (DACP) compared to MyDay® after 12 hours of lens wear.

Completed19 enrollment criteria

DAILIES TOTAL1® Lens Centration in a Japanese Population

MyopiaRefractive Error

The purpose of this study is to compare the lens centration of DAILIES TOTAL1® (DT1) contact lenses to 1-DAY ACUVUE® Tru-Eye® (1DAVTE) contact lenses in a Japanese population after 7 ± 2 days of wearing of each product.

Completed19 enrollment criteria

Comparison of Two Marketed Silicone Hydrogel Lenses

Refractive Error

The purpose of this study is to evaluate cholesterol sorption by AIR OPTIX® AQUA lenses compared to ULTRA lenses after 30 days of wear.

Completed11 enrollment criteria

Effectiveness of a Marketed One-Step Peroxide Lens Care Solution in Symptomatic Contact Lens Wearers...

Refractive Error

The purpose of this study is to assess improvement of palpebral roughness and associated symptoms with 3 months use of Clear Care®.

Completed9 enrollment criteria

Multifocal Lens Design Evaluation

Refractive ErrorPresbyopia

The purpose of this study was to compare binocular high contrast, high illumination (HC/HI) visual acuity at near (40 centimeters) of new multifocal contact lenses against AIR OPTIX® AQUA MULTIFOCAL contact lenses when worn for 9 hours.

Completed13 enrollment criteria

Vision Measured by the Vimetrics CVA Compared With Chart Testing Under Similar Luminance and Contrast...

Refractive ErrorCataract1 more

Purpose of The Study: The purpose of this study is the following: A)To gather age-related normative visual acuity data for the Vimetrics Central Vision Analyzer (CVA, Vimetrics, LLC, Media, Pa) B)To gather visual acuity data for patients with known ocular problems, including cataract and maculopathy. C)To correlate and compare the CVA visual acuity findings with the acuity measured with standard LogMAR acuity charts viewed under similar conditions of contrast and lighting

Completed30 enrollment criteria

On-Eye Evaluation of Contact Lens Rotation Marks

Refractive Error

The purpose of this study was to select the size of the molded rotation mark for a new toric contact lens by comparing the visibility of various molded rotation marks.

Completed13 enrollment criteria

Assessing Fitting Guides in Alcon Multifocal Contact Lenses

PresbyopiaRefractive Errors

The purpose of this study is to compare an alternative fitting guide to a current fitting guide for optimizing contact lens parameters and determining contact lens prescription.

Completed12 enrollment criteria

Clinical Comparison of 2 Daily Disposable Toric Soft Contact Lenses

Refractive ErrorsAstigmatism

The purpose of this study to evaluate the overall performance of PRECISION1™ for Astigmatism contact lenses with MyDay® Toric contact lenses.

Completed9 enrollment criteria
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