View clinical trials related to Myopia.
Filter by:The objectives of this study are to evaluate the safety and efficacy of a treatment regimen for high myopia and myopic astigmatism: LASIK followed by crosslinking performed with the KXL Crosslinking-System and VibeX Xtra (Riboflavin Ophthalmic Solution, Avedro, USA), as compared to LASIK alone, with regards to regression of refractive outcome, as measured by manifest refraction spherical equivalent (MRSE) and keratometry.
The purpose of this study was to evaluate visual acuity at distance when wearing DDT2 contact lenses compared to Clariti contact lenses.
The purpose of this study was to evaluate visual acuity at distance when wearing DDT2 contact lenses compared to Acuvue Moist contact lenses.
The current study aims to systematically investigate the diurnal variation in the optical quality of soft contact lenses on eye throughout the day. Subject reported quality of vision will also be evaluated.
This is a prospective single-center study of implantations of the presbyopic version of phakic intraocular lens IPCL (EyeolUK, United Kingdom).
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.