View clinical trials related to Myopia.
Filter by:our study will investigate the effecacy of Mitomycin-C in TransEpi single step photorefractive keratectomy (PRK) and alcohol assisted PRK
Background: Myopia refers to the pathological state in which the external parallel light enters the eye and focuses in front of the retina, resulting in the inability to clearly image on the retina. The number of myopia in China ranks first in the world. According to statistics from the National Health and Health Commission, the myopia rate of children and adolescents nationwide in 2020 will be as high as 52.7%. High myopia often leads to permanent visual impairment and even blindness. Retinopathy complicated by high myopia has become the first irreversible blinding eye disease in Shanghai and other regions. The problem is severe. Therefore, it is necessary to actively seek effective myopia treatment and correction methods to slow down the progression of myopia and the excessive extension of the eye axis and reduce the occurrence of complications. Objective： On the basis of previous research, this study put forward the hypothesis that if behavior management (including outdoor light exposure and close-range eye-use behavior) can be strengthened in children with myopia wearing defocusing frame glasses, it is possible to achieve more effective myopia control effect, thereby not only ensuring safety also effectiveness. A randomized controlled clinical trial is conducted to evaluate the efficacy and safety of defocusing frame glasses with artificial intelligence in controlling myopia progression in children and adolescents. Intervention: Group 1 ( AI defocusing frame glasses group), Group 2 ( Ordinary defocusing frame glasses group). The study period will be 2 years and each participant will be followed up every six month.
This study is to evaluate the therapeutic effect and safety of LPTAT in children with myopia.
Comparing post-operative visual acuity and patient reported satisfaction between Contoura with Phorcides and WaveLight Wavefront Optimized.
Both orthokeratology and atropine eye drops are effective methods for myopia control, but few studies have compared them all together simultaneously. Therefore, the primary aim of the present study was to compare the effect of orthokeratology versus low-dose (0.01% and 0.02%) atropine on the control of myopia progression.
Photorefractive Keratectomy (PRK) is a commonly performed corneal refractive surgery but has significant post-operative pain. Pain medications after PRK are typically opioid-acetaminophen combinations. Alternatives to opioid medication are worth consideration. Patients will receive PRK in each eye sequentially, using the cannabinoid or codeine/acetaminophen for one eye and the other treatment for the fellow eye two weeks later.
Atropine has a ciliary muscle-paralysing effect and causes hyperopic drift. Besides, atropine has been proven to slow the progression of myopia. Many studies have suggested that atropine can increase the thickness of the choroid. However, few studies have discussed changes in the ciliary muscle after treatment with atropine or other cycloplegic agents. This study aimed to assess the difference in ciliary muscle morphology before and after two different cycloplegic agents and to analyze the correlation between the changes of ciliary muscle biological parameters and the changes of eye axis, spherical equivalent, lens diopter, choroidal thickness, etc. One hundred and forty-four children would be randomly assigned 1:1 to the 1% atropine group and the tropicamide group. This study might provide clinical evidence for the role of regulatory factors in the occurrence and development of myopia.
Studies have shown that atropine eye drops are effective in controlling myopia in children and adolescents. 1% atropine ophthalmic drug has obvious curative effect for controlling myopia, but its side effects such as photophobia and blurred vision limit its popularization and use. In the early stage, our research group used 1% atropine "5+3" myopia control program and 1% atropine alternate eye myopia control program. Retrospective clinical research data showed that it could significantly reduce side effects and improve use compliance, but there is currently no evidence from prospective clinical studies.
Myopia is a common disorder, affecting approximately one-third of the US population and over 90% of the population in some East Asian countries. High amounts of myopia are associated with an increased risk of sight-threatening problems, such as retinal detachment, choroidal degeneration, cataracts, and glaucoma. Slowing the progression of myopia could potentially benefit millions of children. To date, few strategies used for myopia control have proven to be effective. Currently, there are four categories of myopia control treatments: atropine eye drops, multifocal contact lenses, multifocal eyeglasses, and orthokeratology (ortho-k). None of these modalities are US Food and Drug Administration-approved to slow myopia progression, they have been shown to slow the progression by approximately 50% with few risks. Both orthokeratology and soft bifocal contact lenses have shown to slow myopia progression by slightly less than 50% in most studies. The Myolens progressive front soft contact lens is designed to slow down myopia progression in children, The Myolens lens is an aspheric design with a spherical back surface that provides clear vision, with a uniform round edge for excellent fit and optimum comfort. The Myolens-CN is designed with a central for the near optics, while the Myolens-CF with a central for the distance optics, which progressively changes to far area and within a defined optical zone area while considering the movement up-down of the lens on the cornea. The thought behind the design is that the center of the lens will not provide a full optical correction. In the suggested study, both Myolens modalities CN and CF will be investigated in compare to the current approved treatment - MiSight.
Kubota Vision Inc. has developed a spectacle-like prototype device which is designed to be used as a light-based therapy to reduce myopia progression. In this study, we aim to observe the ocular biometric and refractive changes following binocular part-time wear of the clinical prototype device over a course of 12 months and compare that to 12 months of no clinical prototype device use (control).