View clinical trials related to Myopia.
Filter by:This is a multi centre, single arm, prospective observational phase 4 study in naive or pretreated patients with myopic neovascularization. The patients will be treated with intravitreal injections of Aflibercept following a real life protocol. This sudy aims to evaluate the visual acuity during a 36 months period of time.
compare the efficacy, safety and predictability of corneal wavefront guided (WFG) and aberration free ablation in single-step transepithelial photorefractive keratectomy (TransPRK) in myopic patients with high pre-existing corneal higher order aberrations (HOAs).
Myopia is a common disease of the eye with increasing prevalence all over the world including Denmark where the prevalence has increased from 12,8% in 2004 among young adults (mean age 19,3 years) till 17,9% in 2017 among school children (mean age 15,4 years). High myopia is associated with an increasing risk of sight threatening complications such as retinal detachment, glaucoma, macular choroidal degeneration, and myopic choroidal neovascularization. In myopia the eye is elongated compared to an emmetropic eye. If the elongation of the eye can be controlled the progression of myopia can be controlled. Asian studies have shown reduction in axial length growth by 36-46% in children using orthokeratology contact lenses (OKL). OKL are custom fit, form stable lenses. During sleep the cornea is reshaped creating an emmetropic vision during the day, so no glasses or contact lenses are needed. In the CONTROL-study 60 Danish children aged six to 13 years were randomized 1:1 to either OKL (intervention group) or single vision spectacles (SVS) (control group) and followed for 18 months to compare changes in axial length (AL). In CONTROL2 the intervention group will be followed for another 18 month and the control group will be crossed over to OKL treatment. The aims of CONTROL2 is to: 1. Investigate changes in axial length after 3 years of OKL wear (DreamliteR, Procornea, Nederlands). 2. Investigate changes in progression rate 18 month before and after OKL wear. 3. Investigate correlations between changes in choroidal thickness and changes in AL. 4. Investigate the safety of OKL treatment (Efron score). 5. Investigate changes in quality of life before and after OKL treatment using Pediatric Refractive Error Profile 2 (PREP2). 6. Investigate correlations between AC/A-ratio, peripheral refraction and higher order aberrations on myopia progression.
The purpose of this study is to compare visual acuity between two daily disposable contact lenses.
Prospective, randomized, subject-masked 3-arm clinical study to assess the pediatric acceptability across three iterations of a novel spectacle lens design.
This is a crossover study of two types of contact lenses (toric orthokeratology and soft multifocals). Primary aims are to quantify correction of astigmatism, subjective and objective visual performance, aberrometry, peripheral refraction and bacterial bioburden between toric orthokeratology and soft toric multifocal contact lenses.
The aim of the study is to evaluate if the performance of Invigor A is substantially equivalent to Invigor B contact lenses when used in a one month recommended replacement, daily wear modality.
This study will evaluate the influence of contact lens optical design on visual performance using standard and multifocal soft contact lenses (MFCLs).
This study is a multi-site, group sequential, adaptive, randomized, double-masked, 2×2 crossover design, 1-week dispensing study. Subjects will wear bilaterally both Test and Control lenses in a random order for 1-week each as a daily disposable modality with a wash-out period of 1 week between the wearing periods.
To assess the two-week ocular responses, especially on pupillary size and accommodative amplitude, of nightly application of 0.01% or 0.02% or 0.03% atropine eye drops in children with myopia who were randomized to use of three different low-concentration atropine eye drops