Clinical trials: Eye--Refractive Errors
Refractive Error, Myopia
A Comparison of Two Contact Lenses
This study seeks to evaluate the clinical and subjective performance of two established soft contact lenses.
- Trial name
- NCT00700752
- Testing
- senofilcon A, balafilcon A
- Where
- United States
- Volunteers
- 40 people
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Myopia
Comparative Study of the Wearing Satisfaction of Two Soft Contact Lens Designs.
To evaluate the wearing satisfaction of a new design of the PureVision soft contact lenses.
- Trial name
- NCT00768885
- Testing
- PureVision 1, PureVision 2
- Where
- Japan
- Volunteers
- 64 people, healthy volunteers welcome
- Sponsor
- Bausch & Lomb Incorporated
Myopia, Hyperopia
Clinical Investigation of the Vision-R800 Device.
Randomized, bilateral, cross-over dispensing study of a standard and VR800 refraction and associated spectacle lenses.
- Conditions
- Myopia, Hyperopia, Astigmatism, Presbyopia
- Trial name
- NCT04208750
- Testing
- Vision R-800 Phoropter, Standard Phoropter
- Where
- United States
- Volunteers
- 119 people, healthy volunteers welcome
- Sponsor
- Pete Kollbaum, OD, PhD
Myopia
A Prospective Study on Clinical Effectiveness After SMILE Versus SMILE Xtra in Myopia
To evaluate the clinical efficacy and refractive stability of SMILE Xtra compared to SMILE in patients with myopia
- Trial name
- NCT06973278
- Testing
- SMILE, SMILE Xtra
- Where
- China
- Volunteers
- 200 people
- Sponsor
- Shanghai Zhongshan Hospital
Binocular Vision Disorder, Refractive Errors
Binocular Vision Anomalies After Cataract and Refractive Surgery
There are indications in the literature that binocular vision disorders may occur after cataract and corneal refractive surgery.
- Conditions
- Binocular Vision Disorder, Refractive Errors, Cataract
- Trial name
- NCT03592615
- Testing
- cataract surgery, Corneal refractive surgery
- Where
- United States
- Volunteers
- 51 people
- Sponsor
- Salus University
Refractive Errors
The Effect of Gabapentin (Neurentin) and Pregabalin (Lyrica) in Pain Reduction After Photorefractive Keratectomy
The studied patients will be given randomly one of three following drugs1:Gabapentin2: Pregabalin or placebo for 3 days after Photorefractive keratectomy surgery.
- Trial name
- PRK (NCT01122004)
- Testing
- Pregabalin
- Where
- Iran
- Sponsor
- Shahid Beheshti University of Medical Sciences
Myopia
Daily Disposable Silicone Hydrogel Contact Lens, Stenfilcon A, Clinical Study
Clinical evaluation of stenfilcon A compared with narafilcon A and delefilcon A This is a total 120 subject, randomized, open label, bilateral wear, two week crossover study (each lens for 1 week) evaluating the clinical…
- Trial name
- NCT02637804
- Testing
- stenfilcon A, narafilcon A, delefilcon A
- Volunteers
- 106 people
- Sponsor
- CooperVision, Inc.
Myopia, Astigmatism
Wavefront-guided LASIK Surgery Compared to Ray Tracing-Guided LASIK Surgery
We are enrolling participants aged 22 and older to have LASIK surgery in both eyes. We will perform wavefront-guided LASIK in one eye and ray tracing-guided LASIK in the fellow eye of each participant.
- Trial name
- NCT07078799
- Testing
- LASIK
- Where
- United States
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- Stanford University
Myopia, Progressive
Management of Myopia in University Students Using Dual Focus Soft Contact Lenses
The purpose of the study is to quantify the effectiveness of Coopervision MiSight contact lenses in slowing the rate of myopia progression in university students.
- Trial name
- MoMUS (NCT05955638)
- Testing
- MiSight contact lenses, Proclear contact lenses
- Where
- 2 sites in United Kingdom
- Volunteers
- 84 people, healthy volunteers welcome
- Sponsor
- University of Bradford
Refractive Errors
Clinical Characterization of an Investigational Frequent Replacement Daily Wear Silicone Hydrogel Sphere Contact Lens
The primary objective of this study is to evaluate the overall clinical performance of an investigational silicone hydrogel contact lens over 7 days of daily wear.
- Trial name
- NCT04702984
- Testing
- LID021201 contact lenses, OPTI-FREE multipurpose solution
- Where
- 3 sites in United States
- Volunteers
- 39 people
- Sponsor
- Alcon Research
Myopia
Safety and Effectiveness of Wavefront-Guided LASIK Corrections of Myopic Refractive Errors
The purpose of this clinical trial is to demonstrate that wavefront-guided LASIK is safe and effective for the correction of myopic refractive errors.
- Trial name
- NCT01663363
- Testing
- LASIK correction of myopic refractive errors
- Volunteers
- 170 people, healthy volunteers welcome
- Sponsor
- Abbott Medical Optics
Refraction Error, Myopia
The MORE Study: Manifest vs. Online Refraction Evaluation
The assessment of the refractive state of the eye is a fundamental and important part of ophthalmic and optometric clinical practice.
- Conditions
- Refraction Error, Myopia, Astigmatism
- Trial name
- MORE (NCT03313921)
- Testing
- Online Manifest Refraction
- Where
- Netherlands
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- UMC Utrecht
Myopia, Refractive Error
An Evaluation of Myopia Control Lenses on Wearing Experience in Myopic Children
The goal of this research study is to understand the wearing experience of A.M.L. series of lenses in myopic children. The main questions it aims to answer are: How quickly and effectively children adapt to the A.M.L.
- Trial name
- NCT07354945
- Testing
- A.M.L. Series of Lenses
- Where
- China
- Volunteers
- 40 people
- Sponsor
- Essilor International
Myopia
Daily Low-level Red Light and 0.01% Low-dose Atropine for Myopia Prevention
To compare the preventive effects of daily low-level red-light and 0.01% low-dose atropine eye drops on myopia.
- Trial name
- NCT06727019
- Testing
- low-level red-light, Atropine (0.01%)
- Where
- China
- Volunteers
- 138 people, healthy volunteers welcome
- Sponsor
- Beijing Tongren Hospital
Refractive Errors
A New More Efficient Cycloplegia Scheme
The purpose of this study is to determine whether tropicamide + phenylephrine cyclopentolate + applied for once waiting 30 minutes to retinoscopy (new scheme) is not inferior to apply cyclopentolate alone and wait 45 minutes to…
- Trial name
- NCT02177539
- Testing
- Cyclopentolate, Cyclopentolate+tropicamide+phenylephrine
- Where
- Chile
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Pontificia Universidad Catolica de Chile
Myopia
Screening for Hyperopic Reserve in Kindergarten
Screening for hyperopic reserve among senior kindergarten children is an important population-based eye health measure. Hyperopic reserve refers to physiological hyperopia in young children, which acts as a natural buffer against…
- Trial name
- NCT07851532
- Where
- China
- Volunteers
- 134,000 people, healthy volunteers welcome
- Sponsor
- Beijing Tongren Hospital
Ametropia
One-month Clinical Evaluation of Silicone Hydrogel Definitive 65 HPT Contact Lenses
Comparison of different contact lens materials.
- Trial name
- NCT02312323
- Testing
- Definitive 65 HPT contact lenses, Definitive 65 contact lenses
- Where
- 2 sites in Germany
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- Contamac Ltd
Presbyopia
Assessment of Progressive Lens Designs
Non-invasive double-blind randomised comparative study on presbyopic subjects wearing progressive lenses.
- Trial name
- TBPD (NCT04734522)
- Testing
- Progressive Additional Lenses (PAL), pre calibrated and made of polymeric material with anti-reflection coating
- Where
- Italy
- Volunteers
- 80 people
- Sponsor
- University of Milano Bicocca
Astigmatism, Ametropia
Optimization for Toric Contact Lenses
The aim of this study is to evaluate the agreement between subjective and objective toric lens prescriptions.
- Trial name
- NCT07557030
- Testing
- Lens 1 ( stenfilcon A ), Lens 2 ( comfilcon A )
- Where
- United States
- Volunteers
- 29 people
- Sponsor
- CooperVision International Limited (CVIL)
Presbyopia, Near Vision
Phase 3 Safety Study of LNZ100 and LNZ101 for the Treatment of Presbyopia Subjects
Safety Study of the Long-Term Safety of LNZ100 \& LNZ101 in Presbyopic Subjects
- Conditions
- Presbyopia, Near Vision, Refractive Error, Eye Diseases
- Trial name
- NCT05753189
- Testing
- Aceclidine+Brimonidine combination ophthalmic solution, Aceclidine ophthalmic solution, Vehicle
- Where
- 40 sites in United States
- Volunteers
- 362 people, healthy volunteers welcome
- Sponsor
- LENZ Therapeutics, Inc
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