View clinical trials related to Myopia.
Filter by:To compare the rate of myopia progression of contact lenses utilising S.T.O.P.® technology against MiSight® contact lenses.
To explore the effectiveness of using repeated low-level red-light therapy to slow myopia progression.
Approximately 60 participants at Eye Hospital of Wenzhou Medical University during October,2021 to January 2022 will be enroll in the investigators' study. And dived them randomly into 2 groups:High myopia with axial length between 26 mm and 28 mm and High myopia with axial length more than 28 mm (30 eyes) .
This study was aimed to evaluate the effects of different Orthokeratology，including the size of central optical zone and the height of peripheral reverse curve, on myopia control and visual quality.
This is a randomized controlled trial to investigate the effect of capsular tension ring (CTR) implantation on intraocular lens (IOL) tilt and decentration in cataract patients with high myopia.
This is a multi-center, randomized, double-masked clinical trial. All study devices are market approved/cleared in the localities where the study is conducted. Subjects will be randomly assigned to wear NaturalVue Sphere single vision contact lenses (SVCL) or NaturalVue Multifocal (NVMF) soft contact lenses for a total of three years.
The purpose is to compare the myopia control efficacy of Ortho-K lenses (OKL) and Defocus (DIMS) spectacles in Danish myopic children aged 6-12 years. It is a clinical randomized non-inferiority trial, where the participants are randomly assigned to either OKL or DIMS spectacles. The participants are followed during 18 months of therapy. The hypotheses: - There is no statistically significant difference between the myopia control efficacy between OKL and DIMS spectacles. - Larger pupil size is positively correlated to treatment efficacy for both devises. - Increasing choroidal thickness during early treatment is positively correlated to treatment efficacy for both devises. - There is no difference in vision related quality of life between the two groups.
This cohort study aimed to assess the change of refractive status in Chinese school children.
surgical correction of ametropia. A number of improvements have been introduced to overcome the side effects and complications such as corneal haze, epithelial irregularities induced by wound healing, pain and delayed visual acuity recovery associated with PRK surgery. During traditional PRK, the corneal epithelium is mechanically debrided before stromal ablation is performed. Alcohol PRK is frequently used as an alternative to mechanical epithelial debridement and is considered simpler and faster. Transepithelial PRK (TransPRK) is a new method in which the corneal epithelium is photoablated by the laser in one step using a specific ablation profile. This study attempts to establish a means of quantitatively and objectively measuring corneal haze, using patented software based on optical coherence tomography (OCT) of the cornea. This will confirm or refute the hypothesis of a lower occurrence of corneal haze after TransPRK (experimental group) versus PRK with alcohol (control group). Each patient will have one eye randomised to one of the two groups being compared.
Myopia is the most common refractive disorder in the world. Many strategies have been developed to control myopia in children. Among them, the instillation of low-concentration atropine eyedrops has been proven to be effective in numerous publications. Nevertheless, the spreading of atropine use is limited by: (1) its uneven availability, (2) a proportion of children with no or poor response, (3) some issues of long-term compliance (4) the possibility of a rebound effect after treatment cessation. Among the non-drug myopia control strategies, corrective lenses including the Defocus Incorporated Multiple Segments® (DIMS®) technology have demonstrated their effectiveness in a previous study (Hong Kong) when compared to monofocal lenses. The aim of this study is to compare the efficacy of DIMS lenses alone versus atropine 0.05% eyedrops + monofocal lenses, on the evolution of ocular axial length at 2 years in myopic children.