View clinical trials related to Myopia.
Filter by:A prospective study to evaluate the feasibility of a new treatment algorithm to increase depth of focus after wavefront-guided LASIK correction of myopic refractive errors with the iDesign Advanced Wavescan Studio™ System and Star S4 IR™ Excimer Laser System. The purpose of this study is to determine whether wavefront-guided LASIK correction of myopic refractive errors with CustomVue combined with iDesign 1.3-PRESBY (presbyT-LASIK) treatments mitigate the effects of presbyopia by increasing the depth of focus compared to iDesign CustomVue treatments.
This is a prospective, multi-center, subject-masked, bilateral wear, one month dispensing study comparing the clinical performance of the subjects' habitual comfilcon A sphere lens (control) following a refit with comfilcon A asphere lens (test). After the dispensing visit, subjects will return for follow-up evaluations after 2 weeks, and 1 month.
The aim of this non-dispensing study is to evaluate the clinical performance of different hydrogel contact lens designs.
The aim of the proposed study is to investigate the predictive value of corneal biomechanical properties in corneal reshaping therapy and the role of these parameters in determining the amount of myopia reduction.
This is a study to evaluate the performance of fanfilcon A lens when worn on a daily wear modality over approximately 1 month in comparison to the lotrafilcon B lens.
Orthokeratology has the benefit for slowing down myopia progression and enabling unaided vision during the day. To investigate proposed possible changes of conventional and multifocal orthokeratology in the cornea and choroid this study will image both structures with high resolution optical coherence tomographs over a six month period. Findings will help to plan larger trials over a longer period of time in adults and teenagers.
The aim of this clinical trial is to compare the rate of myopic progression in children wearing aspheric (MyLens) and spherical/ toric ophthalmic lenses. The proposed lens design is an aspheric lens which is supposed to slow myopic progression in children by unique asphericity (proprietary information). Myopic progression is quantified by changes in axial length (AL) and cycloplegic refractive error (Rx) will be monitored for 6-12 months (6 months crossover) with double-masking. Peripheral refraction and ocular aberration will be evaluated.
The objective of this study is to evaluate a new daily disposable silicone hydrogel soft contact lens by comparing to an existing daily disposable soft contact lens.
The aim of this dispensing study is to evaluate the clinical performance of habitual wearers of enfilcon A lenses following a refit with fanfilcon A lenses over 4 weeks of daily wear.
Screening of haitian children between the ages of 3 and 6 years old for amblyogenic risk factors with the use of the Spot photoscreener. The photoscreener results will be compared to the complete ophthalmologic evaluation. Primarily, this will allow evaluation of the performance of the spot photoscreener in the haitian children population. Secondarily, this study will gather epidemiological information on vision problems in the haitian children population.