First-Sight Refractive Error Correction: Direct Comparison to Autorefraction Results in Children 7 to 18 Years of Age

Observational Study of Optical Correction for Strabismic Amblyopia in Children 3 to <7 Years Old

NCT00669539 ·Status: COMPLETED

The Objective of This Study is to Evaluate the Perfomance of a Photorefraction Device for Screening Ametropia in Children. Eligible Participants Will Undergo Multiple Refractive Error Measurements, Visual Acuity and Strabismus Assessments During a Single Evaluation Visit.

NCT06882408 ·Status: RECRUITING ·Phase: NA

Enhancement of Emmetropization in Hyperopic Infants

NCT00574717 ·Status: TERMINATED ·Phase: PHASE1/PHASE2

Myopia Prevention With Reading Glasses

NCT05030103 ·Status: NOT_YET_RECRUITING ·Phase: NA

Characterization of the Central and Peripheral Wavefront Aberration Profile in Pediatric Myopic Subjects

NCT06075576 ·Status: COMPLETED

Investigation of the Accuracy of a Low-cost, Portable, Autorefractor to Provide Well-tolerated Eyeglass Prescriptions

NCT03615612 ·Status: COMPLETED ·Phase: NA

Optimization of a Photoretinoscopy Method for Determining the Objective Refraction of Children

NCT06295536 ·Status: COMPLETED ·Phase: NA

Optimization of a Photoretinoscopy Method for Determining the Objective Refraction of Children With a Smartphone/add-on Device in India

NCT06524115 ·Status: COMPLETED ·Phase: NA

A Comparison of Fellow Eyes Undergoing LASIK or PRK With a Wavefront-guided Excimer Laser Versus a Wavefront-optimized Excimer Laser

NCT01135719 ·Status: COMPLETED ·Phase: NA

Bifocal Spectacles vs. Single Vision Spectacles for Esotropia Greater at Near

NCT05527015 ·Status: WITHDRAWN ·Phase: PHASE3

Study of a Hand-held Device Plus Mobile App Versus Standard Eye Care Devices in Measuring Refractive Error of the Eye

NCT03929588 ·Status: COMPLETED ·Phase: NA

Corneal Refractive Therapy Design Comparison for -4 to -6 Diopter Treatment for Overnight Wear for Myopia

NCT05438615 ·Status: COMPLETED ·Phase: NA

Investigation of the Accuracy of an Automated Refractor to Provide Well-tolerated Eyeglass Prescriptions

NCT06883032 ·Status: COMPLETED ·Phase: NA

EyeQue VisionCheck 510(k) Clinical Trial

NCT06044688 ·Status: UNKNOWN ·Phase: NA

Performance of Refractometers With Self-adjusting Lenses Compared to Cycloplegia in Children (REFRALENS)

NCT06668246 ·Status: COMPLETED

Clinical Study to Evaluate Effectiveness of Digital Refraction

NCT03502863 ·Status: COMPLETED ·Phase: NA

Handheld Device Compared With a Standard Eye Care Diagnostic Device in Measuring Ophthalmic Refraction

NCT04693247 ·Status: UNKNOWN ·Phase: NA

Tolerability of a Novel Spectacle Design With Reduced Peripheral Contrast

NCT03761758 ·Status: COMPLETED ·Phase: NA

The Effect of Early Glasses on the Development of Amblyopia

NCT04740593 ·Status: ACTIVE_NOT_RECRUITING ·Phase: NA

A Randomized Trial of Base-in Prism Reading Glasses Convergence Insufficiency in Children

NCT00347581 ·Status: COMPLETED ·Phase: PHASE3

A Dose-ranging Study to Evaluate the Safety and Efficacy of UNR844 in Subjects With Presbyopia.

NCT04806503 ·Status: TERMINATED ·Phase: PHASE2

Peripheral Relative Refractive Power of Orthokeratology Lenses

NCT07294404 ·Status: COMPLETED

Errors of Refraction Among Primary School Children

NCT05366543 ·Status: RECRUITING

Refractive Status and Accommodation Response Under Different Experimental Conditions.

NCT06331780 ·Status: RECRUITING ·Phase: NA

Refractive Accuracy of "2WIN" and Portable Autorefractors

NCT04249505 ·Status: COMPLETED