View clinical trials related to Myopia.
Filter by:The goal of this clinical trial is to compare pharmacological and non-pharmacological treatment effects on the children with different predicted myopia progression rate measured by modified multifocal electroretinogram. The main questions it aims to answer are: - the effectiveness of using 0.05% atropine and prescribing DIMS lens for myopia control in children with different myopia progression rates - the contribution of L/M cones in juvenile myopia progression and changes of retinal activities under atropine and DIMS treatment. Participants will have baseline and follow-up eye examinations and given either pharmacological treatment with 0.05% atropine or non-pharmacological treatment with DIMS lens for myopia control. Researchers will compare the changes of refractive errors and axial length after different types of interventions and investigate the relations between the parameters of mfERG responses and the thicknesses of retinal layers and choroid.
The research project titled "A Comparative Study on the Clinical Efficacy, Quality of Life, and Cost of Use of Peripheral Defocus Spectacles, Frame Glasses, and Orthokeratology Lenses in Myopic Children and Adolescents" aims to evaluate different non-surgical myopia correction methods in children. It focuses on assessing the impact of peripheral defocus spectacles, frame glasses, and orthokeratology lenses on the quality of life, clinical effectiveness, and costs associated with each method. The study is a prospective cohort study involving 300 children aged 13-17 years with myopia ranging from -1.00D to -6.00D. It aims to compare the psychological, social, and educational aspects of these correction methods, alongside their costs and clinical outcomes over a period of one year.
The goal of this post-market clinical follow up Study is to demonstrate the efficacy, safety, acceptability, and quality of life implications of Essilor® Stellest® spectacle lenses in slowing myopia progression in European children and adolescents. Participants will receive Essilor® Stellest® at inclusion visit and will be asked for a full time wear (>12 hours daily) for 24 months. The primary endpoints are the change in axial length and cycloplegic autorefraction from baseline to 24 months compared to expected change based on axial length and refraction centile positions at baseline.
The goal of this observational study is to learn about the difference of refractive outcomes between Artificial Intelligence and experienced surgeon predicting Nomogram assist SMILE surgical design and the influenced factors of refractive outcomes in patients who underwent Small Incision Lenticule Extraction(SMILE) at the Refractive Surgery Center of Tianjin Eye Hospital. The main questions it aims to answer are: - Compare the difference of refractive outcomes between Artificial Intelligence and experienced surgeon predicting Nomogram assist SMILE surgical design - Analysis the influenced factors of refractive outcomes
This is a Phase III, multicenter, randomized, double-masked, active comparator-controlled study evaluating the efficacy and safety of faricimab in patients with myopic choroidal neovascularization (CNV). This non-inferiority study will compare 6.0 mg faricimab versus 0.5 mg ranibizumab administered at a pro-re-nata (PRN) dosing regimen after an initial active IVT treatment administration at randomization (Day 1).
The objective of this investigation is to compare the visual clinical performance of a silicone hydrogel daily disposable investigational contact lenses to a hydrogel daily disposable commercially available contact lenses.
The study aims to observe the long-term changes of ocular（especially fundus） structure and visual function in patients with high myopia, so as to provide evidence for the prevention, diagnosis and prognosis of high myopia.
Myopia has become a world concern and its prevalence has increased in recent decades. Myopic defocus has been applied for slowing down the axial elongation and myopia progression, which is mainly based on the theory of simultaneous competing defocus and peripheral optics. Defocus Incorporated Multiple Segments (DIMS) spectacle lenses impose myopic defocus in the central or peripheral retina, with myopia progression being retarded by 50% to 60%. However, the optimal amount of myopic defocus has not yet been determined. Relative peripheral refraction (RPR) is used to indicate the difference between peripheral refraction and central refraction. Previous studies showed that retinal shape determined RPR, and baseline RPR may influence the myopia control efficacy using DIMS lenses on myopic children. It is still unclear if any other unknown factor influenced the final myopia control outcome in these young children with myopic RPR at baseline. Unlike our previous study8 that bias on hyperopic RPR children (myopic RPR, n = 27; hyperopic RPR, n = 52), this study is a case-control study with the same sample size for each RPR group. We will also include younger children who are more prone to have myopic RPR and develop high myopia. The results should provide new insight into the myopia control strategy in early-onset myopic children. In the current study, we will investigate the influence of baseline RPR in myopia retardation using DIMS lenses among young myopic children. This will ba a 1-year prospective clinical trial. Through G*Power (version 3.1.9.6) calculation, 80 healthy myopic subjects (40 myopic RPR vs 40 hyperopic RPR) aged 5-9 years should be needed. After screened by inclusion criteria, eligible participants will be assigned to wear DIMS lenses for 1 year (12 months, 8 hour per day, 7 days per week). This study includes 5 visits: Visit 1: baseline, Visit 2: lens dispensing, Visit 3: 2-week follow-up, Visit 4: 6-month follow-up, and Visit 5: 12-month follow-up. All eye examinations will be carried out in the Optometry Research Centre (A137), the School of Optometry, the Hong Kong Polytechnic University. The main data collection, including refractive error, axial length, related ocular parameters will be measured at baseline, 6-month and 1-year visits. At the lens dispensing and 2-week follow-up visits, vision acuity testing and computer scanning of posterior eyes will be measured. New DIMS lens will be replaced and upgraded if the equivalent sphere of refraction (SER) is changed or visual acuity change. The following data will be statistically analyzed. The primary outcome data include the difference in change in SER with cycloplegia between the myopic and hyperopic RPR from the baseline over 12 months of treatment. Secondary outcomes data include the changes in axial length, peripheral refraction, relative peripheral refraction, the amplitude of accommodation, lag of accommodation, corneal curvature, phoria and stereoacuity.
Efficacy and Safety Study of QLM3004 in Myopic Children
There are two parts to this trial. First, to compare the rate of myopia progression of spectacle films using Spatio Temporal Optic Phase (S.T.O.P.®) technology that provide a dynamic optical cue against single vision spectacle lenses. Second, to compare the rate of myopia progression of spectacle films using S.T.O.P.® technology that provide a dynamic optical cue against spectacle films using S.T.O.P.® technology that provide a static optical cue. A dynamic optical cue is one that changes, and a static optical cue is one that does not change.