Clinical trials: Short-Sighted
Calculation of Intraocular Lens in High Myopic Cataractous Patients
Comparison Between Different Investigations Used in Intraocular Lens Calculation in High Myopic Cataractous Patients
the purpose of the study is to compare the accuracy of optical and ultrasonic biometry in intraocular lens (IOL) calculation in high myopic cataractous patients
- Trial name
- NCT04952181
- Testing
- optical biometry, ultrasonic biometry
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Sohag University
High Myopia, Axial Length
Repeated Low-Level Red-Light Therapy Shortens Axial Length
The purpose of this clinical trial is to investigate the incidence and magnitude of axial length shortening after repeated low-level red-light therapy in high myopia children and teenagers.
- Conditions
- High Myopia, Axial Length, Eye Diseases
- Trial name
- NCT05768152
- Testing
- RLRL
- Where
- China
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- The Second People's Hospital of Foshan
Myopia
Projected Peripheral Defocus Using a Wearable Device
Acucela Inc. intends to develop a medical device to significantly halt or reverse myopic progression, which is a significant public health concern across the world, especially in Asian demographics.
- Trial name
- NCT04415684
- Testing
- Active projection of defocused image in the peripheral visual field (eSpecs, Acucela Inc.), No Active projection of defocused image in the peripheral visual field (eSpecs, Acucela Inc.)
- Where
- United States
- Volunteers
- 26 people, healthy volunteers welcome
- Sponsor
- Kubota Vision Inc.
Myopia, Nearsightedness
Association Between Breastfeeding and Likelihood of Myopia in 6-7 Years Old Children
Myopia is the main reason of vision loss in the world which is seen in 30.4 million adults in USA (1). In a myopic eye, images are focused in front of retina because, cornea and crystalline lens become more powerful in focusing…
- Trial name
- NCT01013493
- Where
- Iran
- Volunteers
- 245 people, healthy volunteers welcome
- Sponsor
- National Nutrition and Food Technology Institute
Myopia
Evaluation of the Efficacy in Decreasing Myopia Progression of the Proposed Ophthalmic Lens Prototypes
Evaluation of the efficacy in decreasing myopia progression of the proposed ophthalmic lens prototypes.
- Trial name
- NCT05250206
- Testing
- Myopia control lens
- Where
- Spain
- Volunteers
- 92 people, healthy volunteers welcome
- Sponsor
- Indizen Optical Technologies, S.L.U.
Myopia
Topical Application of Low-concentration (0.01%) Atropine on the Human Eye With Fast and Slow Myopia Progression Rate
Our project is a 24-month longitudinal randomized controlled trial that aims to investigate the myopia development after topical application of 0.01% atropine in children with either fast or slow myopia progression classified…
- Trial name
- NCT03374306
- Testing
- Atropine (0.01%), Artificial tear
- Where
- Hong Kong
- Volunteers
- 71 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
Child, Motor Activity
CHAMPS Eye Study - Myopia and Retinal Vascular Geometry in Relation to Physical Activity
An increasingly physical inactive lifestyle in the Western World has led to a higher number of lifestyle -related diseases. The consequences are now already present in childhood with an increased prevalence of overweight…
- Conditions
- Child, Motor Activity, Myopia
- Trial name
- NCT02346006
- Testing
- More physical activity.
- Volunteers
- 307 people, healthy volunteers welcome
- Sponsor
- Odense University Hospital
Myopia
Safety and Efficacy Study of A Viscoelastic-free Method for Implantable Collamer Lens (ICL) Implantation
This study evaluates the safety and efficacy of a viscoelastic-free method for Implantable Collamer Lens(ICL) implantation to treat high myopia.
- Trial name
- NCT03059043
- Testing
- viscoelastic-free implantation system, standard viscoelastic-assisted Implantation system
- Where
- 5 sites in China
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Wenzhou Medical University
Cataract, Presbyopia
Objective and Subjective Outcomes of a Trifocal IOL in Eyes With Different AL
This prospective cohort study enrolled patients with implantation of a trifocal IOL. Only one eye of each patient was enrolled. Eyes were devided into three groups according the axial length (AL), including the short AL group…
- Conditions
- Cataract, Presbyopia, Lenses, Intraocular, Myopia
- Trial name
- NCT05431868
- Testing
- AT LISA tri 839MP (Carl Zeiss Meditec AG)
- Where
- China
- Volunteers
- 61 people, healthy volunteers welcome
- Sponsor
- Peking University Third Hospital
Myopia, Refractive Error
Comparative Study of Cycloplegic Refraction and Subjective Refraction With Fogging in School Age Children
A thorough ophthalmic examination of a child must include a refraction and this is often done with cycloplegia. In our study, we aim to determine at which age group a non-cycloplegic refraction technique closely correlates with a…
- Trial name
- NCT00347347
- Where
- Singapore
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Singapore National Eye Centre
Asthenopia, Myopia
The Impact of Soft Contact Lens Attributes on Symptoms Associated With Digital Eye Strain in Symptomatic Soft Contact Lens Wearers
Despite its prevalence, the ocular causes of eye fatigue or unknown and may be related to the cornea/contact lens surface, the accommodative system, the convergence system, overall postural/muscle fatigue, or a combination of…
- Trial name
- NCT03585790
- Testing
- Contact lens with Multifocal Optics, Contact lens with Single Vision Optics
- Where
- United States
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- Pete Kollbaum, OD, PhD
Myopia
Aberration-Free Refraction Correction
In the interest of improving visual quality after LASIK we have designed a multifaceted study to test the theoretical, physical, biomechanical and functional effects of commercial and independently designed aspherical ablation…
- Trial name
- NCT00172913
- Where
- Taiwan
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- National Taiwan University Hospital
Myopia; Astigmatism
Dispensing Evaluation of Investigational Contact Lenses
Non-randomized, single-masked, 2-visit, bilateral wear, single-arm dispensing study to evaluate the visual acuity, rotational performance, lens fit, stability and subjective characteristics of a senofilcon-based JJVCI…
- Trial name
- NCT02625220
- Testing
- Prototype toric lens senofilcon A
- Where
- 12 sites in United States
- Volunteers
- 177 people, healthy volunteers welcome
- Sponsor
- Johnson & Johnson Vision Care, Inc.
Myopia
Cambridge Anti-Myopia Trial: Accommodation Training and Aberration Control in Myopia Development
We have identified focussing problems related to myopia getting worse. Our trial uses optical and orthoptic interventions that correct the focussing problems to see if this retards myopia progression.
- Trial name
- NCT00317551
- Testing
- Aberration controlled contact lens, Vision training
- Where
- United Kingdom
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Anglia Ruskin University
Myopia, Pre-myopia
A Pilot Evaluation of Refractive Error Progression in Pre-Myopic Children in Singapore With and Without Myopia Control Spectacles
This study aims to find out whether ZEISS MyoActive lenses can help prevent short-sightedness from developing in children. We aim to recruit at least 50 children in total for this study.
- Trial name
- NCT07779941
- Testing
- Zeiss MyoActive lenses, Single Vision Lenses
- Where
- Singapore
- Volunteers
- 124 people, healthy volunteers welcome
- Sponsor
- Singapore National Eye Centre
Myopia, Myopic Astigmatism
Using the VisuMax Femtosecond Laser System to Perform SMILE Optimized for Presbyopia by Modulation of Postoperative Spherical Aberration
The intended purpose of the investigational device in the study is the correction of myopia and myopia with astigmatism in the CE (Conformité Européene) approved range and optimized for presbyopic patients using the treatment…
- Conditions
- Myopia, Myopic Astigmatism, Presbyopia
- Trial name
- NCT05684237
- Testing
- HiSMILE treatment option
- Where
- United Kingdom
- Volunteers
- 53 people, healthy volunteers welcome
- Sponsor
- London Vision Clinic
Myopia, Refractive Errors
Community Intervention and Demonstration Area Construction
The objective of this intervention study was to understand the visual health status of nearly one million children and adolescents in ten provinces in China, and then to conduct intervention and evaluate the effect of…
- Trial name
- NCT05715424
- Testing
- Six interventions for children and adolescents
- Where
- China
- Volunteers
- 1,000,000 people, healthy volunteers welcome
- Sponsor
- Anhui Medical University