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Active clinical trials for "Refractive Errors"

Results 41-50 of 326

Total30 for Astigmatism Contact Lenses

Contact Lens ComplicationAstigmatism1 more

Determine if Total30 for Astigmatism contact lenses (CLs) provide a comfortable wearing experience all day. CL discomfort affects most CL wearers with discomfort consistently topping the reasons why established CL wearers drop out of CLs. In fact, studies have consistently found that the frequency of CL dropout is around 20% with this dropout frequency staying relatively stable over the past 20 plus years. This static frequency of CL dropout is surprising since there have been a number of dramatic soft CL innovations during this time frame (e.g., widely available daily disposable CLs, silicone hydrogel CL materials with high oxygen transmissibility, new CL surface coatings).

Not yet recruiting20 enrollment criteria

Access to EyeGlasses for School-aged Children

MyopiaAmblyopia2 more

Uncorrected refractive error is a leading cause of visual impairment in children and can impact vision, quality of life, and academic performance. Despite Boston Children's Hospital serving patients from a wide range of socioeconomic backgrounds, there are health disparities in access to eyeglasses as a consequence of patients' health insurance. The investigators will examine whether the use of an in-clinic app for 3-D printed glasses reduces disparities in access to eyeglasses for our patients on Medicaid. The intervention will address social determinants of health and improve pediatric health outcomes namely, how and when children having publicly funded health insurance receive eyeglasses. The short-term objectives are (1) to compare the time to receive glasses between publicly funded MassHealth eyeglasses and an in-clinic order of 3D printed glasses (2) to evaluate compliance with glasses wear in these two groups, and (3) to evaluate visual function and quality-of-life outcomes in these two groups. This prospective randomized control study will evaluate barriers to accessing eyeglasses in school-aged children. The investigators will recruit children enrolled in MassHealth and randomize them into two cohorts: (1) the control group will receive MassHealth glasses as per standard of care, through an optical shop of their choosing, or (2) the intervention group will use an app for immediately ordering glasses (paid for by the study) in clinic following their appointment. The investigators will evaluate the time needed to receive eyeglasses, compliance with glasses wear, quality of life, and visual outcomes between the cohorts at one-, three-, and six-month intervals. Through this project, the investigators will not only evaluate, quantify, and bring awareness to disparities in our patient population, but will also look toward finding a solution through the use of a novel application that addresses many of the barriers faced by patients insured through Medicaid.

Not yet recruiting7 enrollment criteria

Contralateral Study of WaveLight® Femtosecond Laser Devices for Corneal Flap Creation

Refractive Errors

The purpose of this study is to assess the WaveLight Ultraviolet Femtosecond Laser System, Model 1026 (UV fs-Laser) corneal flap creation accuracy as compared to the already marketed WaveLight FS200 Infrared Femtosecond Laser, Model 1025 (IR fs-Laser).

Not yet recruiting11 enrollment criteria

Study to Evaluate the Clinical Performance of Deseyne (Vifilcon C) Daily Disposable Soft Contact...

Refractive Error - Myopia Bilateral

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.

Active37 enrollment criteria

A Post-market Clinical Study to Collect Safety and Performance Data on Johnson & Johnson Surgical...

Refractive ErrorGlaucoma1 more

Retrospective collection of data from medical records, multicenter, post-market clinical follow-up study.

Enrolling by invitation8 enrollment criteria

Light Emitting Diodes With a Continuous Spectrum of 430-780nm for Myopia Prevention

MyopiaRefractive Errors1 more

The purpose of this clinical trial is to evaluate the effect of light-emitting diodes (LEDs) with a continuous spectrum of 430-780 nm for lighting in the classroom on myopia prevention among children in Grades 2 and 3.

Not yet recruiting6 enrollment criteria

Air Optix® Night and Day® Aqua Daily Wear

Refractive ErrorsMyopia1 more

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.

Enrolling by invitation8 enrollment criteria

EyeQue VisionCheck 510(k) Clinical Trial

Refractive ErrorsAstigmatism

Demonstrate that refraction measurements from the device agree with refraction measurements from a phoropter within clinically meaningful limits.

Not yet recruiting33 enrollment criteria

Comparison of Visual Acuity Performed in Office Versus In Residence

Refractive Errors

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

Recruiting10 enrollment criteria

Correction of Anisometropic Amblyopia in Children.

AmblyopiaAnisometropic Amblyopia2 more

Anisometropic amblyopia among children in school age may affects quality of life and educational progress of children.

Recruiting5 enrollment criteria
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