Active clinical trials for "Myopia"

This study will evaluate the influence of contact lens optical design on visual performance using standard and multifocal soft contact lenses (MFCLs).

the investigator will evaluate the change in endothelial cell count in eyes implanted with the iris-claw phakic Artisan lens for treatment of moderate to high myopia using specular microscopy

This study will evaluate changes in refractive error and visual performance between a single vision soft contact lens and multifocal soft contact lens

The aim of this study is to evaluate the anatomical and refractive parameters following a single-step transepithelial photo-refractive keratectomy (T-PRK) without the addition of mitomycin-C for the treatment of high myopia of 6 diopters or more.

The present research focused on the effect of the age for the corneal biomechanics of low and moderate myopia patients after wearing orthokeratology (OK lens). According to age, the included cases were divided into 3 groups. Through the analysis of corneal biomechanical parameters, further learn the influence of OK lens on the patient cornea. It would help ophthalmologist and optometrist find out the potential issue and reach a better control result.

Vitamin D deficiency is known to be significantly associated with high myopia. This study investigated the vitamin D status in patients with high myopia and primary open-angle glaucoma, in order to understand the relationship between high myopia and the development of primary open-angle glaucoma.110 primary open-angle glaucoma patients, 110 high myopia patients and 110 age-matched people in the Han population were enrolled. Serum levels of 1a, 25-Dihydroxyvitamin D3 were measured by an enzyme-linked immuno-absorbent assay.Vitamin D receptor polymorphic analysis was studied by polymerase chain reaction-restriction fragment length polymorphism technique.

The purpose of this study is to compare the visual acuity, limbal and bulbar redness of the new galyfilcon A prototype lenses against Avaira® lenses when worn as daily wear for seven (7) days.

The objective of this one week, single group, bilateral, open-label study is to evaluate the product performance of the Bausch & Lomb daily disposable cosmetic tint contact lens (Test) when worn on a daily disposable basis by adapted current wearers of a marketed opaque tinted soft contact lens.

The purpose of this study is to evaluate the comparability of lens fit and lens power of a new contact lens to the lens fit and lens power of two marketed lenses.

The objective of this study is to determine the clinical feasibility and to evaluate the product performance of investigational contact lens.