Active clinical trials for "Myopia"

PURPOSE: The aim of the study is to compare visual acuity means, refractive results, safety, and efficacy of TPRK with AAPRK as primary outcomes and surgical time, pain scores, haze levels, and healing time as secondary outcomes. SETTING: Security Forces Hospital, Ophthalmology Department, Riyadh, Kingdom of Saudi Arabia. DESIGN: Prospective, consecutive, nonrandomized case-control comparative study. . METHODS: A total of 200 eyes of 100 patients were included. One hundred eyes underwent TPRK in the right eye (study group) and 100 eyes underwent AAPRK in the left eye (control group). Ablations performed with the Schwind Amaris, 750S. Clinical outcomes were compared Paired student's t-tests and Mann-Whitney tests were used for statistical analysis.

This project aims to study the effects of treatment characteristics on myopia control in orthokeratology by investigating the effects of modified treatment zone by reducing the lens back optic zone diameter on the effect of myopia control. The project will be a two-year randomized, double-masked (examiner - mask axial length only) study conducted at The Hong Kong Polytechnic University recruiting sixty Chinese subjects aged between 6-11. Subjects will be randomly assigned to two ortho-k groups. The Control group will wear KATT BeFree lens with a BOZD of 6mm while the Test group will wear KATT MC lens with a modified BOZD of 5mm.

Subjects will undergo SMILE surgery in one eye and LASIK surgery in their other eye to correct myopia.

Full-thickness macular Hole associated with macular detachment is a one of the maculopathies of high myopia. There is controversy in the primary treatment for this situation. This study will compare the effects of macular buckling versus vitrectomy in a cohort of highly myopic eyes with this situation.

This project is a multi-center, randomized, parallel-controlled, non-inferior clinical trial of soft contact lenses.

The objective of this study is to demonstrate that the Ticon Aspherical Daily Disposable Soft Contact Lens could retard myopia progress in youth

The purpose of this study is to determine the effectiveness of antiangiogenic therapy to choroidal neovascularization secondary to pathologic myopia.

The prevalence of myopia and severe myopia are increasing and will affect 50% and 10% of the population respectively. Severe myopia exposes an increased risk of glaucoma, cataract, retinal detachment and myopic maculopathy, a source of visual impairment. To date, no European cohort study has been conducted to estimate the rate of these complications and to study the predictive parameters.

Multicenter, prospective, single-arm, observational, non-interventional post market clinical investigation (registry study) with the overall objective to assess safety and performance of CLEAR in a real world setting.

The purpose of this study is to evaluate the effect of an investigational silicone hydrogel soft contact lens on new contact lens wearers (neophytes) compared to a control of spectacle wearers.