View clinical trials related to Myopia.
Filter by:To evaluate and compare the effect of the prophylactic use of two different exposure times of mitomycin C (MMC) 0.02% to inhibit haze formation after photorefractive keratectomy (PRK) for high myopia (> -7.0 D). Methods: Forty six eyes of twenty three patients, 8 men and 15 women, with high myopia were included in this prospective study. Mean age at the time of PRK plus MMC was 31.7 years. Before PRK, the mean spherical equivalent was -8.50 D (range, -7.25 to -10.50 D). In each patient, one eye was randomly assigned to PRK and a single intraoperative topical application of mitomycin C 0.02% for 15 seconds (Group 1) and the fellow eye, for 30 seconds (Group 2).The inclusion criteria were high myopia, no central corneal opacity and inadequate corneal thickness to allow a safe Laser in situ keratomileusis procedure. Refraction, uncorrected visual acuity, best spectacle-corrected visual acuity (BSCVA), and slit-lamp evidence of corneal opacity (haze) were evaluated over 12 months
The purpose of this study is to test the hypothesis that myopia can be prevented by using a low concentration of atropine eyedrops once a week.
The primary purpose of this study is to investigate the effect of silicone hydrogel contact lenses on conjunctival flora over a period of 6 months of daily wear. A secondary aim is to compare the levels of microbial contamination of silicone hydrogel lenses after daily wear.
The purpose of the study is to determine whether contact lens wear will improve children's self-perceptions more than spectacle wear.
The purpose of this study is to verify the compatibility of a silicone hydrogel lens when used with four multipurpose disinfecting solutions (OPTI-FREE® RepleniSH®, ReNu MultiPlus®, Solo-Care Aqua™ and MeniCareTM Soft).
The purpose of the study is to evaluate and compare, on a daily wear basis, the performance of two contact lens care solutions when used with silicone hydrogel soft contact lenses with regards to comfort and dryness symptoms.
The purpose of this study is to determine whether a new non-contact biometer, is as accurate as the the available gold-standard.
Purpose: To determine whether the use of reading glasses blocks the near work mediated increased incidence of myopia in healthy school children. Methods: SMART enrolled 115 emmetropic children (ages 7-9 years). The children were recruited in the Principality of Liechtenstein. They were randomly assigned to either the control group (n=52) or to receive reading glasses with a lens power of +2.0 dioptres (n=63). The primary outcome measure was progression towards myopia as determined by autorefraction after cycloplegia. The secondary outcome measure was change in biometry measurements of corneal curvature, axial length, anterior chamber depth, crystalline lens thickness, and vitreous chamber depth using partial coherence interferometry.
To evaluate the safety, efficacy and physiological performance of daily disposable spherical and toric soft contact lenses in a vision-corrected population of children ages 8-11 years of age. To evaluate the ability of the practitioner to fit these lenses and for the children to wear and manage these lenses.
The purpose of the present study is to carry out a trial to evaluate the clinical efficacy of the NeuroVision Low Myopia Treatment. The specific questions to be answered are: 1. Is there an improvement in vision following the treatment without bringing about a change in the subject's prescription for glasses? 2. Can any treatment effect be seen at 6 months and 12 months after the termination of the treatment?