Clinical trials: Refractive Error - Myopia
Myopia, High Myopia
Clinical Results of Small Incision Lenticule Extraction (SMILE) for the Correction of High Myopia
Small Incision Lenticule Extraction (SMILE) was introduced in 2011 using the VISUMAX femtosecond laser (Carl Zeiss Meditec, Jena, Germany). It is designed for correction of myopia and myopic astigmatism.
- Trial name
- NCT04110067
- Testing
- Small Incision Lenticule Extraction (SMILE) with Visumax (Carl Zeiss Meditec, Jena)
- Where
- Germany
- Volunteers
- 5,000 people, healthy volunteers welcome
- Sponsor
- Suphi Taneri
Myopia
Polarization Sensitive Optical Coherence Tomography
The purpose of the study is to use the polarization sensitive optical coherence tomography (PS-OCT) developed by Singapore Eye Research Institute, to evaluate the potential OCT scleral biomarkers capable of predicting risk of…
- Trial name
- NCT05809674
- Testing
- Polarization sensitive optical coherence tomography (PS-OCT)
- Where
- Singapore
- Volunteers
- 178 people, healthy volunteers welcome
- Sponsor
- Singapore Eye Research Institute
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
Myopia
Noninvasive and Dynamic Monitoring the Biological Parameters of Eyes in Different Age Groups
Myopia is the most common refractive eye disease worldwide. The number of cases is up to 2 billion. In recent years, the incidence of myopia in China is obviously rising trend.
- Trial name
- NCT05250440
- Where
- China
- Volunteers
- 240 people, healthy volunteers welcome
- Sponsor
- Zhongnan Hospital
Cataract, Myopia
Measurement of Antioxidant Activity on Postoperative Inflammation in Patients Undergoing Ophthalmic Surgery
This trial hypothesized that novel laser refractive surgery techniques (PRK, LASIK, SMILE) or laser-assisted cataract surgery (FLACAS) could suppress postoperative inflammation and improve recovery in patients by reducing…
- Trial name
- NCT05905237
- Testing
- Cataract surgery, Femtosecond-LASIK, SMILE
- Where
- 2 sites in Taiwan
- Volunteers
- 132 people, healthy volunteers welcome
- Sponsor
- Chang Gung Memorial Hospital
Myopia
Progressive Myopia Treatment Evaluation for NaturalVue Multifocal Contact Lens Trial
This is a multi-center, randomized, double-masked clinical trial. All study devices are market approved/cleared in the localities where the study is conducted.
- Trial name
- PROTECT (NCT05159765)
- Testing
- Single vision contact lenses, Multifocal contact lenses
- Where
- 8 sites in United States, Canada and 2 more
- Volunteers
- 144 people, healthy volunteers welcome
- Sponsor
- Visioneering Technologies, Inc
Myopia
Product Feasibility of a New Silicone Hydrogel Contact Lens
The objective of this study is to determine the clinical feasibility and to evaluate the product performance of investigational contact lens.
- Trial name
- NCT01309100
- Testing
- Investigational Lens, Acuvue Oasys Lens, Air Optix Aqua Lens
- Where
- United States
- Volunteers
- 144 people, healthy volunteers welcome
- Sponsor
- Bausch & Lomb Incorporated
Myopia
Comparison of Next Generation Laser Techniques of Myopia Correction: iDesign vs. SMILE
The proposed study seeks to compare visual acuity, tomographic outcomes, biomechanical changes and inflammatory profile of normal eyes (matched for age, refraction and corneal thickness) undergoing iDesign and SMILE procedure.
- Trial name
- NCT03001401
- Testing
- iDesign, SMILE
- Where
- India
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Narayana Nethralaya
Myopia, Astigmatism
Clinical Study to Evaluate Effectiveness of Digital Refraction
Prospective, comparative, randomized, non-masked clinical study to compare the a digital refraction with LogMAR VA testing utilizing trial lenses, to standard manual refraction using a Phoropter, and LogMAR VA testing, in…
- Trial name
- NCT03502863
- Testing
- Digital refraction, Manual Refraction
- Where
- 3 sites in United States
- Volunteers
- 102 people, healthy volunteers welcome
- Sponsor
- Visibly
Myopia, Dental Caries
Bedtime Routines and Children's Health
In Taiwan, the prevalence of sleep problems, myopia, and dental caries in school-age children is high. Little is known regarding the implementation of oral and vision health outcomes around bedtime.
- Conditions
- Myopia, Dental Caries, Sleep, Asthenopia
- Trial name
- NCT05201924
- Testing
- Bedtime routine, Control
- Where
- Taiwan
- Volunteers
- 160 people, healthy volunteers welcome
- Sponsor
- National Taiwan University
Myopia, Hyperopia
Daily Wear Corneal Infiltrative Event Study
This DWCIE Study is a prospective cohort study of patients fit to the FDA approved and marketed lotrafilcon A (Ciba Vision, Air Optix Night \& Day Aqua) soft contact lenses for daily wear (DW) with monthly disposal.
- Conditions
- Myopia, Hyperopia, Corneal Infiltrative Events
- Trial name
- DWCIE (NCT00937105)
- Testing
- lotrafilcon A contact lenses, Renu Multiplus, Clear Care
- Where
- United States
- Volunteers
- 218 people, healthy volunteers welcome
- Sponsor
- University Hospitals Cleveland Medical Center
Myopia, Astigmatism
Contralateral Study of Topography Guided LASIK Versus Small Incision Lenticule Extraction
This study evaluates differences in postoperative visual outcomes between patients receiving Topography-Guided LASIK in one eye and Small Incision Lenticule Extraction in the other eye.
- Trial name
- NCT05611294
- Testing
- Topography Guided LASIK Surgery, Small Incision Lenticule Extraction Surgery
- Where
- United States
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- Hoopes Vision
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, Orthokeratology
The Effect of Treatment Zone Decentration on Axial Length Elongation After Orthokeratology
Orthokeratology lens is an effective method for myopia control. This study analyzed the effects of treatment zone decentration on axial length elongation in adolescents with orthokeratology lens.
- Trial name
- NCT05365373
- Where
- China
- Volunteers
- 251 people, healthy volunteers welcome
- Sponsor
- Tianjin Eye Hospital
Myopia, Visual Fatigue
Discussion on the Effectiveness of Tea on Blood Pressure, Body Composition and Vision Problems in College Students
Background: Tea is a universal beverage and one of the most popular drinks around the world. Some cell and animal experiments have pointed out that drinking tea may be related to hypotension, body composition and vision problems…
- Conditions
- Myopia, Visual Fatigue, Blood Pressure, Body Composition
- Trial name
- NCT06570226
- Testing
- hibiscus tea
- Where
- Taiwan
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Hungkuang University
Myopia
Preservative-free Topical Anesthetics for Post-PRK Pain
The goal of this interventional comparative study is to assess the efficacy and safety of a novel regimen of preservative-free unit-dose topical anesthetics for controlling early postoperative pain following single-step…
- Trial name
- NCT05733741
- Testing
- Preservative-free Benoxinate hydrochloride 0.4% (Benoxidia unit-dose vials [UD], Orchidia pharmaceutical Ind., Egypt), Preservative-free Sodium hyaluronate 0.2% (Polyfresh unit-dose vials [UD], Orchidia pharmaceutical Ind., Egypt).
- Where
- Egypt
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- Assiut University
Myopia
The Effects of Low-dose Atropine and Orthokeratology in Pediatric Myopia Control
Both orthokeratology and atropine eye drops are effective methods for myopia control, but few studies have compared them all together simultaneously.
- Trial name
- AVO (NCT05478356)
- Testing
- low-dose atropine eye drops, orthokeratology
- Where
- 2 sites in China
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Evidence Based Cataract Study Group
Hyperopia and Myopia
Eye Imaging for the Study of Childhood Myopia
Myopia (nearsightedness) is increasing worldwide and is becoming a serious public health problem. Studies estimate that by 2050, if no action is taken, almost half of the world's population will be myopic.
- Trial name
- SELENA (NCT07335146)
- Testing
- Ophtalmic measurements to estimate geometrical distances, MRI, Ophtalmic measurements to measure wavefront aberrations
- Where
- France
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Essilor International
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
Refractive Surgery
Topography Guided LASIK by Different Protocols for Treatment of Astigmatism
Background and Rationale: LASIK has been among the highest satisfaction rates of surgical procedures, ranging from 82%-98%. Different ablation profiles have been developed over the years.
- Trial name
- NCT03597906
- Testing
- topography guided ablation, manifest refraction, full topography modified refraction
- Where
- Egypt
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Cairo University