Clinical trials: Near Vision
Myopia
Choroidal Response to the Modified Defocus Incorporated Multiple Segments Spectacle Lenses
The goal of this study is to investigate the short-term changes in choroidal thickness and efficacy of the study spectacle lenses in children.
- Trial name
- NCT07547072
- Testing
- Modified Defocus Incorporated Multiple Segments lens (D1), Modified Defocus Incorporated Multiple Segments lens (D2)
- Where
- Hong Kong
- Volunteers
- 108 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
Myopia
Efficacy of PEG-400 and Systane Artificial Tears (Alcon) on Quality of Vision
To evaluate the effect of PEG-400 and Systane on quality of vision after LASIK.
- Trial name
- NCT00627302
- Testing
- PEG-400, Systane
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Bp Consulting, Inc
Exercise, Physical Activity
Companion: Sensor-based Two-way Communication for Physical Activity in Older Adults
This pilot study is a small sample (N=46) 16-week clinical trial with a follow-up after 24-weeks among sedentary adults >60 y with a BMI >25 kg/m2 to tests the impact of a hybrid artificial intelligence behavior change system…
- Trial name
- NCT04827212
- Testing
- Companion
- Where
- United States
- Volunteers
- 51 people, healthy volunteers welcome
- Sponsor
- Northeastern University
Myopia, Astigmatism
An Outcomes Study Comparing the Intralase FS 60 to the Intralase iFS When Performing LASIK Surgery for Nearsightedness
The purpose of the study is to compare the results of LASIK surgery when using two versions of a femtosecond laser in patients with nearsightedness with and without astigmatism.
- Trial name
- NCT01365728
- Testing
- LASIK with the iFS femtosecond laser
- Where
- United States
- Volunteers
- 61 people, healthy volunteers welcome
- Sponsor
- Stanford University
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, 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
Cognition Disorder, Functional Brain Imaging
fMRI and NIRS Imaging for Traumatic Brain Injury
Background: The amount of blood flowing in brain areas goes up when those areas are being used for activities, such as movement or seeing.
- Trial name
- NCT01668758
- Volunteers
- healthy volunteers welcome
- Sponsor
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
Near Vision
Pharmacological Treatment of Presbyopia
In this clinical trial, a total of 75 presbyopic patients in the age range of 40 to 60 years old will be participated. The right eyes of 45 patients will be treated by Biocarpine® and they will be considered as the case group…
- Trial name
- NCT05564832
- Testing
- Pilocarpine 1.25% Eye drop
- Where
- Iran
- Volunteers
- 75 people, healthy volunteers welcome
- Sponsor
- Shahid Beheshti University of Medical Sciences
Myopia
To Evaluate The Performance Of Two Monthly Replacement Silicone Hydrogel Contact Lenses After 1-month Of Wear
To evaluate the performance of two monthly replacement silicone hydrogel contact lenses in habitual FRP CL wearers when worn for 1-month.
- Trial name
- NCT05333965
- Testing
- Lens A (lehfilcon A lens), Lens B (comfilcon A lens)
- Where
- Canada
- Volunteers
- 26 people, healthy volunteers welcome
- Sponsor
- CooperVision, Inc.
COVID-19, Endothelial Function
Non-invasive Characterization of Systemic Microvascular Reactivity by Near-infrared Diffuse Optical Spectroscopy in COVID-19 Patients
The purpose of this study is to characterize microvascular reactivity on the forearm muscle using non-invasive near-infrared spectroscopy in critically ill COVID-19 patients, and to correlate its alterations with 28-day mortality…
- Trial name
- HEMOCOVID19 (NCT04689477)
- Testing
- Vascular occlusion test
- Where
- 8 sites in United States, Brazil and 2 more
- Volunteers
- 612 people, healthy volunteers welcome
- Sponsor
- Corporacion Parc Tauli
Headache
Combine Effect Of Myofascial Release Technique and Ocular Muscle Exercise Among University Students
The current study aim to determine the effect of myofascial release technique and ocular muscle exercise to release eye strain headache in myopic students.
- Trial name
- NCT06406881
- Testing
- physical therapy, myofascial release therapy
- Where
- Pakistan
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Riphah International University
Myopia, Refractive Errors
Prevalence and Environmental Factors for Myopia Among Chinese School-aged Children and Adolescent in Tianjin
The high prevalence of myopia has become a global public health problem. The study amied to investigate the prevalence and progression of myopia associated with social environmental factors in Tianjin, a Chinese megacity in north…
- Trial name
- NCT05336799
- Where
- China
- Volunteers
- 500,000 people, healthy volunteers welcome
- Sponsor
- Tianjin Eye Hospital
Myopia, Refractive Errors
Dual-Action Lenses for Slowing Myopia in Children and Teens: A Randomized, Double-Blind Trial
This is a single-center, randomized, double-blind, controlled study to test whether a new type of eyeglass lens - a "dual-action" lens that combines two technologies (multiple defocus zones and dot diffusion) - can slow the…
- Trial name
- NCT07854457
- Testing
- Dual-Action Myopia-Control Spectacle Lens, Stellest Myopia-Control Spectacle Lens（Highly Aspherical Lenslet Target / HALT Lens）
- Where
- China
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Post-endoscopic Mucosal Resection of Colon Polyps
Assessing a Endoscopic Mucosal Resection Site Using Different Endoscopic Imaging Methods
The purpose of this study is to compare the accuracy of using different endoscopic imaging technique (white light, white light with near focus, narrow band imaging (NBI), NBI with near focus) for detection of residual neoplastic…
- Trial name
- NCT02668198
- Testing
- Olympus CF190 Colonoscope High definition white light, Olympus CF190 Colonoscope White light with near focus, Olympus CF190 Colonoscope Narrow band imaging
- Where
- United States
- Volunteers
- 230 people, healthy volunteers welcome
- Sponsor
- Michael Wallace
Myopia, Soft Contact Lenses
A Clinical Trial Assessing the Efficacy and Safety of ST-1 Silicone Hydrogel Daily Disposable Soft Contact Lenses Compared to Miru 1day UpSide
This study will enroll 63 eligible subjects (126 eligible eyes, complete at least 108 evaluable eyes) in approximately 6 different medical centers in Taiwan, in order to evaluate the efficacy and safety of ST-1 silicone hydrogel…
- Conditions
- Myopia, Soft Contact Lenses, Daily Disposable Soft Contact Lenses
- Trial name
- NCT07345416
- Testing
- ST-1, Miru 1day UpSide
- Where
- 6 sites in Taiwan
- Volunteers
- 63 people, healthy volunteers welcome
- Sponsor
- Menicon Co., Ltd.
Complications; Cesarean Section
The Oxygenation of the Brain During Caesarean Section
The purpose of this study is to determine the impact of phenylephrine versus ephedrine on organ perfusion, in women undergoing caesarean section receiving spinal anaesthesia.
- Trial name
- OBDUC (NCT01509521)
- Testing
- Ephedrine, Phenylephrine
- Where
- Denmark
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Naestved Hospital
Myopia Progressing
Light Diffraction Glasses in Preventing and Controlling Myopia in Adolescents
This study aims to evaluate the effectiveness of lenses with light diffraction glasses in controlling the progression of myopia in children and adolescents, and to explore the feasibility of effective design, and apply…
- Trial name
- NCT06927414
- Testing
- Functional lens
- Where
- China
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Shanghai Eye Disease Prevention and Treatment Center
Myopia
Characterization of the Corneal Biomechanics of Patients Treated by Corneal Lenticule Extraction for Advanced Refractive Correction (CLEAR) to Correct Myopia
This study aims to perform biomechanical tests on extracted CLEAR lenticles that are routinely discarded after surgery. The investigators also aim to perform Brillouin microscopy to get an in-vivo assessment of the patient's…
- Trial name
- CLEAR Biomech (NCT04817592)
- Testing
- Corneal lenticule extraction for advanced refractive correction (CLEAR)
- Where
- Switzerland
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University of Bern
Myopia, Astigmatism
Multi Laser Platform Comparison Study for LASIK
Comparison of LASIK outcomes using 3 different lasers and a total of 5 different treatment platforms.
- Trial name
- VBLWL-001 (NCT00770094)
- Testing
- Excimer Lasers, Excimer Laser for the LASIK procedure, Excimer Laser for LASIK
- Where
- 3 sites in United States
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Durrie Vision
Reflex Sympathetic Dystrophy
Near-infrared Spectroscopic Measurement in Complex Regional Pain Syndrome
Recent clinical investigations have suggested that the cause of abnormal pain in complex regional pain syndrome could be ischemia and inflammation, due to poor blood flow to deep tissues from microvascular pathology.
- Trial name
- NCT01586377
- Where
- Canada
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's