137 Clinical Trials for Various Conditions
Prospective, single-site, non-interventional, technician masked, randomized (instrument and examiner testing sequences), controlled, bilateral, parallel-group study.
This is a unilateral, non-interventional study. Each subject will be unilaterally measured with the WAM-5500 autorefractor by 3 testers. All measurements will be made on the right eye only.
To determine if the intraocular pseudophakic contact lens (IOPCL), referred to as the AccuraSee, corrects residual refractive errors after cataract surgery using a plus powered lens in subjects with ocular pathology previously implanted with a Bausch and Lomb LI61AO or LI61SE monofocal posterior chamber intraocular lens (PCIOL) and to confirm its positional stability and adherence relative to the PCIOL.
Single-center, open-label, prospective study in healthy volunteers desiring refraction for correction of visual acuity to compare a handheld device supported by a mobile application with the phoropter and autorefractor.
Demonstrate that wavefront-guided LASIK using measurements from the iDesign System is safe and effective for the treatment of Hyperopia.
The purpose of this clinical trial is to demonstrate that wavefront-guided LASIK is safe and effective for the correction of myopic refractive errors.
The aim of this study is to test the efficacy of the First-Sight refractive kit designed to provide refractive correction of simple hyperopia, myopia and astigmatism with autorefraction.
Proof of concept study to compare the best corrected visual acuity obtained via First-Sight lenses with the autorefraction in children.
Proof of concept study is to compare the best corrected visual acuity obtained via First-Sight lenses with the clinical "gold standard" of manifest refraction and autorefraction.
The purpose of this study is to conduct a prospective clinical trial to compare conventional and WFG LASIK for enhancements on post-LASIK patients. Differences in safety, efficacy, visual quality, and refractive stability will also be compared during this study.
To compare and contrast normal eye growth, ocular component development, and refractive error development in Hispanic, African-American, and Asian schoolchildren with what happens in Caucasian children from the Orinda Longitudinal Study of Myopia. To investigate risk factors for the development of myopia. To conduct DNA-based studies on nearsighted children and their families.
The purpose of the study is to evaluate the lens fit characteristics of delefilcon A contact lenses with different base curves and diameters.
At the New England College of Optometry in Boston, MA, subjects ages 18-65 who have received or are receiving treatment for refractive error who choose to enroll in the study will be evaluated using subjective refraction and automated refraction, by way of the QuickSee Plus refractor. Subjects will then be randomized into one of two treatment plans: receive glasses from automated refraction first then subjective refraction second, and vice versa. After one week of wearing the first pair of glasses, patient preferences are assessed, and glasses are switched. After a week of wearing the second pair of glasses from the alternate measurement method, patient preferences are again assessed. Patients may then decide which pair patient like best. This is a triple blind, case-crossover clinical trial.
Open label, prospective, randomized, multicenter, measurement only feasibility study to evaluate the docking procedure using the ELITA Single Piece Patient interface in conjunction with the ELITA system
The purpose of this study is to assess long term performance and safety of verofilcon A soft contact lenses in a real-world setting in a population of 7 years or older having at least 1 year of verofilcon A (sphere or toric) contact lens wear in a daily wear and daily disposable modality.
The purpose of this study is to assess the clinical performance of DAILIES TOTAL1® spherical soft contact lenses over approximately 1 week of daily wear.
The purpose of this retrospective, Post-Market Clinical Follow-Up (PMCF) study is to assess the long term performance and safety of Air Optix® Night and Day® Aqua (AONDA) contact lenses in a real-world setting when worn as 30 days of continuous wear for vision correction.
The purpose of this Post-Market Clinical Follow-Up (PMCF) study is to assess long term performance and safety of Air Optix® Night and Day® Aqua (AONDA) contact lenses in a real-world setting when worn as daily wear for vision correction.
This clinical study is to provide clinical performance data comparing the test lens (Deseyne \[vifilcon C\] daily disposable soft contact lens) to a control lens (1-Day Acuvue Moist \[etafilcon A\] daily disposable soft contact lens) in the same indication for use (single use prior to removal followed by a fresh lens upon the next lens wear exposure). The study is designed to test the hypothesis that the test lens is substantially equivalent to the control lens in like indications for use.
The purpose of this clinical trial is to assess on-eye performance and overall fit of an investigational multifocal toric contact lens to aid in confirmation of the study lens design.
The purpose of this Post-Market Clinical Follow-Up (PMCF) study is to assess long term performance and safety of Air Optix plus HydraGlyde Multifocal soft contact lenses in a real-world setting when worn as daily wear or extended (overnight) wear.
The purpose of this Post-Market Clinical Follow-Up (PMCF) study is to assess long term performance and safety of Air Optix Aqua Sphere, Air Optix plus HydraGlyde Sphere, and Air Optix plus HydraGlyde Toric soft contact lenses in a real-world setting when worn as extended (overnight) wear.
The purpose of this Post-Market Clinical Follow-Up (PMCF) study is to assess long term performance and safety of Air Optix Aqua, Air Optix plus HydraGlyde Sphere, and Air Optix plus HydraGlyde Toric soft contact lenses in a real-world setting when worn as daily wear.
The purpose of this study is to assess the overall clinical performance of a contact lens made with a modified manufacturing process.
This study will be a 2-phase, prospective, multicenter, open-label, non-comparative, non-randomized clinical investigation to confirm the safety and effectiveness of the ELITA system.
The purpose of this study is to assess the clinical performance of two reusable silicone hydrogel contact lenses when worn on a daily wear basis.
Retrospective collection of data from medical records, multicenter, post-market clinical follow-up study.
GoCheck has developed and deployed a home-based visual acuity test that may be used in-office or in residence. The test methodology utilizes modified ATS and ETDRS protocols with Sloan optotypes, crowding bars and sophisticated algorithms. The objective of this study is to determine if the results of the GoCheck visual acuity test performed in an office setting correlate to the same testing when implemented in the residence
The purpose of this clinical study is to assess the clinical performance of an investigational toric soft contact lens compared to a commercially available toric contact lens in a crossover dispense trial when worn in a daily wear modality for 30 days, each study lens type.
The purpose of this study is to compare the clinical performance of PRECISION1 contact lenses with Biotrue contact lenses.