Active clinical trials for "Presbyopia"

The aim of this study is to validate the clinical of comfilcon A extended range high add center near (CN) multifocal lenses in existing contact lens wearers against the current comfilcon A high add multifocal lenses.

This is a study to evaluate the clinical performance and subjective acceptance of an investigational contact lens (test), compared to a marketed lens (control) in an in-office setting.

This study will identify the optimum concentrations of AGN-199201 and AGN-190584 when dosed in combination once a day for the improvement of uncorrected near visual acuity in participants with presbyopia (inability to focus on items close-up).

The purpose of this study is to clinically evaluate the visual performance of two commercially available presbyopia-correcting Trifocal IOLs.

This is a four week study to evaluate the performance of a multifocal contact lens in habitual wearers of silicone hydrogel multifocal contact lenses.

The primary purpose of the study is to compare the performance of three soft bifocal contact lenses in terms of the vision provided by the lenses.

The Presbyopia Algorithm subject to this study has been specifically developed to prospectively generate a treatment file for the Technolas 217z100 laser that will provide Presbyopia correction among eyes with primary hyperopia or hyperopic astigmatism (distance correction). The treatment algorithm provides a bilateral, multifocal ablation with a center near addition, thereby allowing good focus over a range of object distances.

The purpose of this study is to evaluate the use of a multifocal contact lens in people who previously wore contact lenses but discontinued due to age-related, near vision demands.

Clinical assessment of a new optical element for presbyopia compensation - the Light Sword Lens.

This study is a randomized, single-masked, crossover clinical trial. There are two study lenses. Each lens will be dispensed for 3 ± 1 days and then an optimization visit will occur. The final lens pair will be dispensed for 12 ± 2 days and the follow-up on the final lens pair will occur. The second study lenses will then be fit and the above sequence repeated.