Clinical trials: Hyperopia,
Myopia, Hyperopia
Evaluation of Effectiveness of Correcting Refractive Error With Ready-made Spectacles
This research project will compare two methods of correcting refractive error (long or short-sightedness) with spectacle lenses.
- Conditions
- Myopia, Hyperopia, Astigmatism
- Trial name
- RECS (NCT00657670)
- Testing
- Ready-made spectacles, Spectacles
- Where
- 2 sites in China, India
- Volunteers
- 800 people, healthy volunteers welcome
- Sponsor
- Johns Hopkins University
Myopia, Hyperopia
High Refractive Index Material 510(k)
The purpose of this study is to establish the substantial equivalence of the HDS HI 1.54™ to the paflufocon C material control lenses to correct myopia and hyperopia with and without astigmatism.
- Trial name
- PVS-07-07 (NCT00766168)
- Testing
- HDS HI 1.54; pahrifocon A, FluoroPerm 30 RGP; paflufocon C
- Where
- 8 sites in United States
- Volunteers
- 76 people, healthy volunteers welcome
- Sponsor
- CooperVision International Limited (CVIL)
Myopia, Hyperopia
Comparison of Contact Lens Maintenance Systems for Silicone Hydrogel Lenses
The primary purpose of this study is to investigate the performance of contact lens maintenance systems when used with silicone hydrogel contact lenses during daily wear over a period of 1 month.
- Trial name
- NCT00363623
- Testing
- Silicone hydrogel contact lens
- Where
- Australia
- Volunteers
- 44 people, healthy volunteers welcome
- Sponsor
- University of Melbourne
Hyperopia, Myopia
Clinical Study of Clariti Monthly Contact Lens
A clinical study report follows; this clinical study evaluated the safety and efficacy of SAUFLON CLARITI Soft Silicone Hydrogel Contact Lens with UV Blocker by comparison with Air Optix Aqua silicone hydrogel contact lenses…
- Trial name
- NCT01392950
- Testing
- Air Optix Aqua, Clariti
- Where
- United Kingdom
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Sauflon Pharmaceuticals Ltd
Hyperopia, Refractive Error
Optical Defocus to Stimulate Eye Elongation in Hyperopia
Axial hyperopia results when the length of the eye is too short for the eye to properly focus distance objects on the retina while the focusing system is relaxed.
- Trial name
- ODSEEH (NCT00950924)
- Testing
- Simultaneous Vision Bifocal Soft Contact Lenses, Single Vision Soft Contact Lenses
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Aller, Thomas A., OD
Healthy, Myopia
Ocular Imaging With Spectral Domain Optical Coherence Tomography
The purpose of this study is to analyze macular retinal thickness and macular volume using the spectral domain - optical coherence tomography (SD-OCT) in normal eyes and in eyes with various ocular diseases.
- Conditions
- Healthy, Myopia, Hypermetropia
- Trial name
- NCT00926549
- Testing
- Spectral domain-OCT (Cirrus™ HD-OCT, Carl Zeiss Meditec AG)
- Where
- South Korea
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Yonsei University
Hyperopia, Farsightedness
Correction of Farsightedness in Children Study
The Correction of Hyperopia In Children Study (CHICS) is a placebo-controlled, randomized, masked investigation of the effect of spectacle correction for moderate amounts of hyperopia on visual function, attention, and reading…
- Trial name
- CHICS (NCT00472212)
- Testing
- Spectacles, Control
- Where
- 4 sites in United States
- Volunteers
- 58 people, healthy volunteers welcome
- Sponsor
- Ohio State University
Myopia, Hyperopia
Corneal Epithelial Thickness Mapping by Anterior Segment Optical Coherence Tomography in Patients With Refractive Errors
This study evaluates corneal epithelial thickness using anterior segment optical coherence tomography (AS-OCT) in patients with refractive errors.
- Conditions
- Myopia, Hyperopia, Astigmatism, Emmetropia
- Trial name
- NCT07647146
- Where
- Egypt
- Volunteers
- 360 people, healthy volunteers welcome
- Sponsor
- Sohag University
Refractive Errors, Astigmatism
EyeQue VisionCheck 510(k) Clinical Trial
Demonstrate that refraction measurements from the device agree with refraction measurements from a phoropter within clinically meaningful limits.
- Trial name
- NCT06044688
- Testing
- EyeQue VisionCheck, Phoropter
- Volunteers
- 156 people, healthy volunteers welcome
- Sponsor
- EyeQue Corp.
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
Children, Hyperopia
Efficacy of S.T.O.P®KIT in Retarding Axial Length Growth in Children With Low Hyperopia
This is a multicenter, parallel-group, open-label, randomized controlled, superiority interventional clinical study initiated by investigators from Shanghai General Hospital (Study Protocol No.: IT-CRU-FAMB-001, Version V1.1…
- Trial name
- NCT07401511
- Testing
- Attaching different phase Dynamic Spatiotemporal Optical Films (S.T.O.P® KIT) when wearing spectacle frames
- Where
- 3 sites in China
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine
Hyperopia
Safety and Efficacy of the Transform™ Corneal Allograft for Hyperopia Correction
The objective of this clinical study is to evaluate the safety and effectiveness of intrastromal implantation of the Allotex TCA for improving distance vision in hyperopic subjects.
- Trial name
- NCT03671096
- Testing
- Intrastromal TCA Inlay
- Where
- 11 sites in Austria, Belgium and 4 more
- Volunteers
- healthy volunteers welcome
- Sponsor
- Allotex, Inc.
Hyperopia, Long Sight
Zimbabwe Eyecare And Learning(ZEAL):Formative Research on Hyperopia and Educational Outcomes in Primary School Children
The purpose of this study is to determine whether uncorrected or corrected long-sightedness (hyperopia) has an impact on reading skills, in Grade 2 or Grade 4 school-aged children from Mashonaland Central province of Zimbabwe…
- Trial name
- ZEAL (NCT05538182)
- Testing
- Spectacles
- Where
- Zimbabwe
- Volunteers
- 1,883 people, healthy volunteers welcome
- Sponsor
- Queen's University, Belfast
Myopia Progression
Factors Influencing Physiological Hyperopia in Children
The trend of myopia in children and its low age is a major social and public health problem in China. More seriously, retinopathy associated with high myopia has become the number one cause of irreversible blinding eye disease in…
- Trial name
- NCT06498947
- Testing
- This study was observational with no intervention.
- Where
- China
- Volunteers
- 1,006 people, healthy volunteers welcome
- Sponsor
- Beijing Tongren Hospital
Myopia, Astigmatism
Randomized, Non-inferiority Trial Comparing SMILE and LASIK
Background: Small Incision Lenticule Extraction or SMILE is a novel form of 'flapless' corneal refractive surgery that was adapted from Refractive Lenticule Extraction (ReLEx).
- Conditions
- Myopia, Astigmatism, Hypermetropia
- Trial name
- NCT01216475
- Testing
- Femtosecond LASIK, Small incision lenticule extraction (SMILE)
- Where
- Singapore
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- Singapore National Eye Centre
Hyperopia, Presbyopia
The VIS Opti-K Low Vision Aid Device Provides Vision Improvement.
The VIS Opti-K Low Vision Aid device will be used to provide vision improvement to patients with refractive disorders (hyperopia and presbyopia).
- Trial name
- Opti-K Pres (NCT06597292)
- Testing
- Vision improvement
- Where
- 2 sites in United States, Canada
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- VIS, Inc.
Ocular Surface Disease, Irregular Astigmatism
Evaluation of the Safety and Efficacy of Rigid Breathable Scleral Contact Lenses for the Correction of Ametropia
To evaluate the short-term efficacy and safety of scleral contact lens in the clinical treatment of patients with irregular astigmatism after corneal transplantation by analyzing ocular parameters and ocular surface conditions of…
- Conditions
- Ocular Surface Disease, Irregular Astigmatism, Contact Lens Complication, Corneal Astigmatism
- Trial name
- NCT06256770
- Where
- China
- Volunteers
- 176 people, healthy volunteers welcome
- Sponsor
- Tianjin Eye Hospital
Myopia, Hyperopia
Comparing Low-cost Handheld Autorefractors - a Practical Approach to Measuring Refraction in Low Resource Settings
Study compares four portable vision measurement and eye-imaging technologies in terms of accuracy and time and ease of use with older adult (ages 40-100) participants in a developing-country setting (India).
- Trial name
- NCT03456245
- Testing
- Vision device validation
- Volunteers
- 205 people, healthy volunteers welcome
- Sponsor
- Harvard School of Public Health (HSPH)
Keratomileusis, Laser In Situ
The Role of Psychosocial and Other Quality of Life Parameters in Evaluating Functional Changes Prior to and Following Laser In-situ Keratomileusis (LASIK)Changes Laser In-situ Keratomileusis (LASIK)
To evaluate the changes in quality of life parameters after LASIK surgery.
- Trial name
- NCT00344604
- Testing
- Role of psychosocial and quality of life parameters prior to and following LASIK.
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- University of Texas Southwestern Medical Center
Myopia, Hyperopia
Comparative Evaluation of Corneal Staining With Balafilcon A Lenses and Two Multi-Purpose Solutions
A new multi-purpose solution (MPS)was clinically evaluated against Opti-Free RepleniSH MPS at specific time points over the course of four days. The study was conducted with PureVision lenses.
- Conditions
- Myopia, Hyperopia, Astigmatism
- Trial name
- NCT01024855
- Testing
- RevitaLens OcuTec MPS (Investigational MPS) and Opti-Free RepleniSH MPS (control)
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Abbott Medical Optics