Active clinical trials for "Refractive Errors"

The purpose of this trial was to evaluate the factors affecting comfortable contact lens wear and how those factors affect contact lens replacement frequency.

The purpose of this study is to compare the subjective performance of two daily disposable contact lenses with respect to comfort and handling.

The purpose of this study is to compare the change from baseline in central corneal curvature at one week, between 2 silicone hydrogel lenses, in higher myopic subjects.

The purpose of this study was to demonstrate substantial equivalence of an investigational toric soft contact lens to the commercially available Focus® DAILIES® Toric soft contact lens when worn in a daily wear, daily disposable mode for three months.

To evaluate and compare the performance of a new contact lens to a marketed contact lens.

Subjects will wear 2 of 2 study contact lenses for a wearing time of approximately three to four hours at each of the visits in order to take measurements on binocular functional visual performance.

The purpose of this study is to evaluate the performance of the investigational verofilcon A contact lens compared to the commercially available delefilcon A contact lens, by assessing visual acuity as the primary variable.

Prospective, multicenter, bilaterally-treated, open-label, non-randomized clinical trial.

The primary purpose of this study is to evaluate whether interventions to improve vision in nursing home residents have an impact on residents' health-related quality of life. The interventions being evaluated are correction of refractive error (near-sightedness, far-sightedness, presbyopia) and cataract surgery.

To evaluate the performance of the study soft lens for vision, comfort, physiology and lens surface properties.