Clinical trials: Visual Quality
Cognitive Performance, Sleep Quality
The Effect of Caffeinated Chewing Gum on Cognitive Performance in Night-shift Emergency Physicians
This study aimed to examine the impact of caffeinated chewing gum on the cognitive performance of night-shift emergency physicians in a partially sleep-deprived state.
- Trial name
- NCT06693505
- Testing
- caffeinated chewing gum
- Where
- Taiwan
- Volunteers
- 14 people, healthy volunteers welcome
- Sponsor
- China Medical University Hospital
Knee Disease, Quality of Recovery
Ultrasound-guided H-FICB for Arthroscopic Knee Surgery： What is the Optimal Dose of Dexmedetomidine?
Total knee replacement (TKR) is among the most commonly performed orthopedic procedures, and a six-fold increase in the number of TKR cases world-wide is projected within a decade as the aging of the populations .
- Trial name
- NCT05533970
- Testing
- ultrasound-guided high fascia iliaca compartment block
- Where
- China
- Volunteers
- 120 people
- Sponsor
- Affiliated Hospital of Nantong University
Anterior Uveitis, Posterior Uveitis
Quality of Life and Visual Function in Uveitis Patients
The purpose of this study was to measure the quality of visual function and quality of daily living in patients with anterior, posterior, and panuveitis.
- Conditions
- Anterior Uveitis, Posterior Uveitis, Panuveitis, Uveitis
- Trial name
- NCT00407316
- Where
- United States
- Volunteers
- 50 people
- Sponsor
- The New York Eye & Ear Infirmary
Myopia
VEP for Assessment SMILE Visual Quality
To evaluate the subjective and objective postoperative visual quality employing pattern visual evoked potential (P-VEP) following small incision lenticule extraction (SMILE).
- Trial name
- SMILE VEP (NCT07889752)
- Testing
- small incision lenticule extraction (SMILE)
- Where
- China
- Volunteers
- 84 people
- Sponsor
- yuhao shao
Sleep Quality
Filtered Eyewear to Prevent Light-induced Melatonin Suppression - Aim 1
The aim of this study is to determine the relative effectiveness of monocular and binocular light exposures, with and without selective blue-blocking filtering, on nocturnal melatonin suppression, subjective sleepiness, and…
- Trial name
- NCT06310135
- Testing
- Filtered Eyewear, Unfiltered Eyewear, No Filters
- Where
- United States
- Volunteers
- 29 people, healthy volunteers welcome
- Sponsor
- Icahn School of Medicine at Mount Sinai
Myopia, Refractive Errors
The Effect of the Free-toroidal Design Lenses on the Subjective Visual Quality in the Myopic Population
A prospective, self-control, double-blind design was conducted in Tianjin. Two hundred participants were assigned to wear two kinds of spectacle glasses.
- Trial name
- NCT05684302
- Testing
- The free-toroidal design lenses
- Where
- China
- Volunteers
- 200 people
- Sponsor
- Tianjin Eye Hospital
PARKINSON DISEASE (Disorder), Dysphagia
Effortful Swallow Exercise With Visual Biofeedback for Tongue Strength in Parkinson's Disease
The goal of this clinical trial is to learn whether adding visual biofeedback to an effortful swallow exercise program improves tongue strength and swallowing function in adults with Parkinson's disease.
- Trial name
- NCT07906028
- Testing
- Effortful swallow exercise with visual biofeedback, Effortful swallow exercise without visual biofeedback
- Where
- Turkey (Türkiye)
- Volunteers
- 35 people
- Sponsor
- Saglik Bilimleri Universitesi
Cataract, Age-Related
Comparison of Optical Quality With Different Placement of Refractive Multifocal Intraocular Lens
The study aims to compare postoperative optical quality between two different implanting position of a rotationally asymmetric MIOL [SBL-3 Lenstec; +3.00 diopters (D)], angle kappa based implantation and 0 to 180 degree…
- Trial name
- NCT03674840
- Testing
- angle kappa based SBL-3 implantation, 0 to 180 degree SBL-3 implantation
- Where
- China
- Volunteers
- 40 people
- Sponsor
- Peking University Third Hospital
Aphakia, Cataract
Visual Quality Following Aspheric Intraocular Lens (IOL) Implantation - a Comparative Clinical Study
To evaluate visual acuity and quality of vision in participants undergoing cataract surgery with a Hoya model 751 intra-ocular lens and to compare the visual results to the common monofocal lens in use.
- Trial name
- 751 (NCT01544777)
- Testing
- Study IOL, Hoya iSert 751, Negatively aspheric IOL
- Where
- Australia
- Volunteers
- 42 people
- Sponsor
- Hoya Surgical Optics, Inc.
Cataract
Patient Satisfaction and Visual Function Following Implantation of Trifocals or Extended Range of Vision Intraocular Lenses
Cataract surgery is a fast evolving refractive procedure, which aims to restore vision. The majority of intraocular lens (IOL) implants following cataract surgery are monofocal IOLs, which have been designed to improve distance…
- Trial name
- NCT04900662
- Where
- Canada
- Volunteers
- 480 people
- Sponsor
- Queen's University
Lenses, Intraocular, Glistenings
Impact of Glistenings in AcrySof Intraocular Lenses on Visual Quality
This study will assess the impact of IOL glistenings on visual quality and function in patients implanted with a single-piece AcrySof intraocular lens (IOL) that exhibits glistening formations.
- Conditions
- Lenses, Intraocular, Glistenings, Visual Quality
- Trial name
- NCT01202981
- Where
- United States
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- University of Utah
Glaucoma
Assessment of Advanced Glaucomatous Visual Field Loss and Its Impact on Visual Exploration, Activities of Daily Living (ADL) and Quality of Life (QoL)
The purpose of this explorative study, targeting subjects with advanced binocular glaucomatous visual field loss, is: (i) to identify the perimetric / psychophysical method, that is most closely correlated with an individually…
- Trial name
- GlaucomaEXPLOR (NCT01372319)
- Where
- Germany
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- University Hospital Tuebingen
Short-Term Renal-Hematologic Safety, Contrast-Enhanced MRI and FDG-PET/CT
Comparative Evaluation of Contrast-Enhanced MRI and FDG-PET/CT in Spinal Pathology: Image Quality and Short-Term Renal-Hematologic Safety
This prospective comparative observational study evaluates image quality characteristics and short-term physiological effects associated with contrast-enhanced magnetic resonance imaging (MRI) and fluorodeoxyglucose positron…
- Conditions
- Short-Term Renal-Hematologic Safety, Contrast-Enhanced MRI and FDG-PET/CT, Spinal Pathology
- Trial name
- NCT07640386
- Where
- Egypt
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Cairo University
Light Adjustable Lens, Objective Depth of Focus
Objective Depth-of-Focus Changes During Light Adjustable Lens UV Adjustments
This observational pilot study will examine how a person's vision changes during the routine adjustment and finalization of a Light Adjustable Lens (LAL) after surgery.
- Trial name
- NCT07868003
- Where
- Canada
- Volunteers
- 20 people
- Sponsor
- Clarity Eye Institute
Cataract
Comparing the Visual Outcome, Visual Quality, and Satisfaction Among Three Types of Multi-focal Intraocular Lenses
The investigators are going to Investigate the comparative efficacy of the patients who underwent cataract surgery with three different multifocal IOLs.
- Trial name
- NCT04019691
- Testing
- Mix-and-Match, EDOF, Trifocal
- Where
- South Korea
- Volunteers
- 60 people
- Sponsor
- Samsung Medical Center
Limbal Dermoid
Visual Quality and Contrast Sensitivity Function for Limbal Dermoid Children After Corneal Transplantation
This study is to inquiry the contrast sensitivity function in the 50 eyes of limbal dermoid children with keratoplasty with quick contrast sensitivity function (quick CSF) test, as well asa to analyze its relationship between…
- Trial name
- NCT03447041
- Where
- China
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen University
Cardiovascular Diseases
Development of a Method for Converting Visual Analogue Scale (VAS) Scores for Pain and Mobility to EQ-5D Answers
The objective of this study is to investigate how mobility and pain scores, measured on a Visual Analogue Scale (VAS), correspond to patients' EuroQol-5Dimensions-3Levels (EQ-5D-3L) answers on pain and mobility.
- Trial name
- NCT01424683
- Where
- Denmark
- Volunteers
- 217 people
- Sponsor
- Lars Oddershede
Quality Control, Validation Study
Comparison of Four Methods for Entering the Gap Position of Landolt Cs
The aim of this study is to investigate and compare the validity of four different input methods for Landolt Cs, i.e. the proportion of correct gap positions in relation to the total number of performances.
- Trial name
- LC_Entry (NCT04299659)
- Testing
- Landolt C entry method
- Where
- Germany
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Aalen University
Peripheral Arterial Disease
Iloprost Therapy in Patients With Critical Limb Ischemia
Monitoring efficacy and safety aspects of iv. iloprost therapy of patients with critical limb ischemia by recording clinical parameters.
- Trial name
- NCT01458041
- Testing
- Iloprost (Ilomedin, BAYQ6256)
- Where
- Hungary
- Volunteers
- 126 people
- Sponsor
- Bayer
Low Vision, Retinitis Pigmentosa
Visual Performance Measures in a Virtual Reality Environment for Assessing Clinical Trial Outcomes in Those With Severely Reduced Vision
Purpose: To validate a newly developed battery of performance-based tests of visual function to be presented using virtual reality.
- Conditions
- Low Vision, Retinitis Pigmentosa, Stargardt Disease 1, Stargardt Disease 3
- Trial name
- NCT04281732
- Testing
- Virtual Reality Headset based tests
- Where
- United Kingdom
- Volunteers
- 18 people
- Sponsor
- Queen's University, Belfast