Clinical trials: Error, Refractive
Presbyopia
Trial of the PresVIEW Implant for the Improvement of Near Vision in Patients With Presbyopia
The primary objective of this study is to evaluate the safety and effectiveness of the PresVIEW™ Scleral Implant (PSI) for the improvement of near visual acuity in presbyopic patients.
- Trial name
- NCT01166568
- Testing
- PresVIEW Scleral Implants
- Where
- 14 sites in United States
- Volunteers
- 337 people, healthy volunteers welcome
- Sponsor
- VisDura, Inc.
Myopia, Conjunctivitis
Zanzibar Arts for Children's Eyesight Pilot Trial
In Zanzibar, around 22,000 children (4% of those aged 6 to 12) need treatment for eye issues like conjunctivitis or require glasses. A 2017 study found that 42% of rural children needing glasses didn't have them.
- Conditions
- Myopia, Conjunctivitis, Hyperopia
- Trial name
- ZANZI-ACEII (NCT06469697)
- Testing
- School music broadcast, Community music broadcast
- Where
- Tanzania
- Volunteers
- 1,295 people
- Sponsor
- Queen's University, Belfast
Astigmatism
Clinical Evaluation of Hydrogel and Silicone Hydrogel Daily Disposable Toric Contact Lenses
This study was to evaluate the patient subjective experiences of two daily disposable toric contact lenses.
- Trial name
- NCT05805085
- Testing
- Lens A, Lens B
- Where
- Spain
- Volunteers
- 40 people
- Sponsor
- CooperVision, Inc.
Moderate Hyperopia
Single-step Transepithelial PRK for Hyperopia
Hyperopia is one of the commonest refractive errors encountered in ophthalmology practice. Laser in situ keratomileusis (LASIK) has been widely used to correct hyperopia especially with the advent of femtosecond laser technology…
- Trial name
- NCT05261685
- Testing
- Single-step transepithelial PRK
- Where
- Egypt
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Assiut University
Myopia
Assessment of Daily Disposable Silicone Hydrogel Lens Wear
The purpose of this study is to evaluate the effect of an investigational silicone hydrogel soft contact lens on new contact lens wearers (neophytes) compared to a control of spectacle wearers.
- Trial name
- NCT01093625
- Testing
- Narafilcon B Contact Lens, Spectacles
- Where
- United States
- Volunteers
- 157 people
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Myopia
Patient Reported Outcomes With WaveLight LASIK
This study is a multi-site, single-arm, ambispective, observational study of subject satisfaction, after successful bilateral LASIK surgery. Subjects will be assessed 12+ months post-operatively.
- Trial name
- NCT06668909
- Testing
- WaveLight® EX500
- Where
- 4 sites in United States
- Volunteers
- 300 people
- Sponsor
- OVO LASIK + Lens
Retinopathy of Prematurity
Refractive Error and Biometry in Retinopathy of Prematurity
The investigators compared long-term refractive and biometric outcomes in children with retinopathy of prematurity who received two different anti-vascular endothelial growth factor agents.
- Trial name
- NCT03334513
- Testing
- Bevacizumab, Ranibizumab
- Volunteers
- 35 people
- Sponsor
- San Ni Chen
Refractive Errors
Clinical Performance Evaluation of Two Daily Disposable Silicone Hydrogel Toric Contact Lenses
The purpose of this study is to evaluate the rotational behavior of DT1 Toric contact lenses.
- Trial name
- NCT04254003
- Testing
- DT1 Toric contact lenses, AO1DfA contact lenses
- Where
- 2 sites in United States
- Volunteers
- 48 people
- Sponsor
- Alcon Research
Cataract, Presbyopia
Non-Inferiority Study Comparing MINI WELL READY® and FineVision® in Patients With Cataract Surgery
Interventional, Multicentre, controlled, randomized, single blind, twoarmed non-inferiority trial
- Trial name
- NCT03060954
- Testing
- MINI WELL READY ®, FINE VISION®
- Where
- 2 sites in France
- Volunteers
- 8 people
- Sponsor
- SIFI SpA
Myopia, Environment
Environmental Factors and Myopia Prevalence Among Uyghur Students in Remote China
Ophthalmologic screening performs annually. Main information collected: gender, age, race, school, visual acuity, autorefractive results.
- Trial name
- NCT07119723
- Where
- China
- Volunteers
- 100,000 people, healthy volunteers welcome
- Sponsor
- Tianjin Medical University Eye Hospital
Astigmatism
Revive Toric RWE Study
This is a post-market observational clinical investigation. The objective of this observational study is to evaluate the visual performance and HCP satisfaction of REVIVE samfilcon B custom toric contact lenses.
- Trial name
- NCT06785194
- Testing
- REVIVE samfilcon B custom toric contact lenses
- Where
- 3 sites in United States
- Sponsor
- Bausch & Lomb Incorporated
Myopia
Comparison of Two Daily Disposable Contact Lenses Over 1-week of Wear
This is a one week 2x2 crossover study comparing delefilcon A with etafilcon A, with a primary hypothesis of comparing the handling of each lens.
- Trial name
- NCT01669629
- Testing
- delefilcon A, etafilcon A
- Where
- 10 sites in United States
- Volunteers
- 183 people
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Ametropia
Evaluation of Enfilcon A Soft Contact Lens When Compared to Galyfilcon A Soft Contact Lens
The primary objective of thes study is to confirm that the ocular response to the Test lenses are similar to those of the Control lenses when used in a 1 week planned replacement, daily wear modality over a 1-month period.
- Trial name
- NCT01706770
- Testing
- enfilcon A, galyfilcon A
- Where
- 3 sites in United States
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- CooperVision, Inc.
Cataract, Astigmatism
Evaluation of Toric Intraocular Lens(IOL) Combined With Capsular Tension Ring(CTR) in Patients With Cataract Combined With High Myopia
The objective of this study is to evaluate the postoperative visual quality and IOL stability in patients with cataracts and high myopia who have undergone surgery using astigmatism-correcting IOLs in conjunction with tension…
- Conditions
- Cataract, Astigmatism, Intraocular Lens Rotation
- Trial name
- NCT06571773
- Testing
- intraoperative implantation of Capsular Tension Ring, none intraoperative implantation of CTR
- Where
- China
- Volunteers
- 72 people
- Sponsor
- Shanghai 10th People's Hospital
Presbyopia, Cataract Senile
Prospective Clinical Study of Different Intraocular Lens Implantation Designed for the Correction of Presbyopia
Compare postoperative Subjective and objective visual quality and economic efficiency of different Intraocular Lens(IOLs) implantation designed for the correction of presbyopia.
- Trial name
- NCT04265846
- Testing
- bifocal IOL, mix bifocal IOL, trifocal IOL
- Where
- China
- Volunteers
- 140 people
- Sponsor
- Peking University Third Hospital
Myopia
The Influence of Atropine on Choroidal Thickness
Atropine eye drops are increasingly prescribed for the management of progressive myopia or short-sightedness. A previous study suggested that the back of the eye or choroid may be a part of the mechanism by which it induces its…
- Trial name
- NCT03158142
- Testing
- Atropine Sulfate 1% Oph Soln
- Where
- United States
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- State University of New York College of Optometry
Myopia, High, With Cataract and Anterior Capsule Polished
The Influences Of Anterior Capsule Polishing On Anterior Capsular Changes and Intraocular Lenses Stability of Super High Myopic Eyes
A prospective study included 20 patients with super high myopia who underwent bilateral uneventful cataract. 360°anterior capsule polishing was performed with double-ended capsule polisher randomly in one eye, and the opposite…
- Trial name
- NCT03142269
- Testing
- 360°anterior capsule polishing
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- yin ying zhao
Refractive Errors, Myopia
Evaluation of Delefilcon A Contact Lenses
The purpose of the study is to evaluate the lens fit characteristics of delefilcon A contact lenses with different base curves and diameters.
- Trial name
- NCT06884202
- Testing
- Delefilcon A contact lenses with different base curves and diameters, Delefilcon A contact lenses with standard base curves and diameters
- Where
- 16 sites in United States
- Volunteers
- 267 people
- Sponsor
- Alcon Research
Refractive Error
Clinical Investigation of Refraction Techniques
Prospective, multi-center, non-interventional, randomized, comparative clinical study to identify an optimal refractive technique that provides maximum plus refractive endpoint for best corrected distance visual acuity (BCDVA).
- Trial name
- NCT05461586
- Testing
- Refractive Technique (MR #1), Refractive Technique (MR #2)
- Where
- Australia
- Volunteers
- 35 people
- Sponsor
- Johnson & Johnson Surgical Vision, Inc.
Refractive Errors
Air Optix Plus HydraGlyde Multifocal Daily/Extended Wear Contact Lenses
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…
- Trial name
- NCT05886894
- Testing
- Lotrafilcon B multifocal soft contact lenses, Comfilcon A multifocal soft contact lenses
- Where
- 8 sites in United States
- Volunteers
- 351 people
- Sponsor
- Alcon Research
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