View clinical trials related to Myopia.
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The objective of this clinical trial was to evaluate the efficacy and safety of defocusing lenses for delaying myopia progression in children and adolescents. A total of 156 subjects meeting the requirements of the study protocol were included. During the study, subjects were required to wear the test product (defocus lens A or defocus lens B) or the control product (aspheric lens) for 12 months, and regular follow-up was required during the wearing process, including various ophthalmological examinations and subjective feelings about wearing the lens. During the study period, the product status, ocular conditions, adverse events and serious adverse events were continuously observed to evaluate the safety and effectiveness of the test product in clinical use.
The goal of this observational study is to test whether surgeries for lenses designed to be implanted in the eye to correct refractive error can be done without the need for using viscoelastic substances that are used routinely nowadays to make it easier to introduce them inside the human eye and protect the inside of the eye during the operation. The main question it aims to answer is that is it safe to do the surgery without using them? to answer this question researchers will access recorded data of patients that underwent refractive surgeries in a private clinic since 2017 and compare them as two groups: those who underwent the traditional procedures and those who had it without the use of dispersive viscoelastics in regard to their vision before and after surgery, their ocular pressure and biomicroscopic analysis of the inside of their corneas before and after surgery.
The objective of this clinical investigation is to evaluate the efficacy and safety of SAT-001 designed as Software as Medical Device (SaMD) for slowing myopia progression and treatment in pediatric myopia patients.
The prevalence of myopia is increasing globally, especially in Asian countries. 70-80% of the young population suffers from myopia, and almost 20% have high myopia. High myopia can easily lead to blinding diseases, including retinal detachment, macular degeneration, and glaucoma. In Taiwan, according to a survey by the National Health Administration, the proportion of myopia among Grade 1 students has exceeded 81%. There are many ways to control myopia progression. High concentrations of atropine have been reported highly effective in the control of the myopia progression. However the accompanied side effects such as photophobia and near blurred vision. Recent research shows that low-concentration atropine can achieve similar control effect and more acceptable with much minimal side effect compared to high concentration of atropine. Multiple animal experiments have confirmed that giving retinal myopia defocus signals can effectively decrease the growth of the eye, thereby inhibiting the progression of myopia. Therefore, regarding lens design, myopic defocus does play an important role in myopia control, including orthokeratology lenses, multifocal soft contact lenses, and peripheral defocus lenses. Stellest, a myopia control lens based on the myopia defocus theory, is equipped with highly aspheric lenslet technology. In a recent study, compared with single vision lenses, Stellest significantly slowed down the myopia progression reaching 67% and retard axial elongation reaching 64% The purpose of this study is to explore the effectiveness of Stellest Lenses in controlling myopia in Taiwanese children and whether Stellest Lenses combined with low-concentration atropine eye drops can increase the effect of myopia control.
This study is a prospective, randomized, crossover clinical trial with a planned proposed enrollment of 120 Chinese male and female subjects aged 6-12 years without systemic or ocular diseases to follow up their cycloplegic equivalent spherical lens power and other relevant indices in order to determine the role of TAMER lenses in myopia control as compared to singlie vision lenses.
In this non-interventional retrospective and prospective observational study, the long-term evolution of clinical and iconographic characteristics of patients with pathological myopia will be considered Changes of some specific clinical, tomographic and angiographic variables evaluated on the baseline and after a minimum of 5 years follow-up will be studied.
The purpose of this study is to evaluate the performance of DAILIES TOTAL1 daily disposable contact lenses with regards to subjective symptoms (comfort, dryness, vision) in lens wearers who use identify themselves as substantial digital device users (at least eight hours of digital device use per day).
A Study to Evaluate the Safety and Efficacy of the Bausch + Lomb Myopia Control Lens for the Correction of Myopic Ametropia and Slowing the Progression of Myopia in Children
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.