View clinical trials related to Visual Acuity.
Filter by:The present research process is a prospective clinical study that will be conducted under the auspices of the Democritus University of Thrace (DUTH) in the open accommodation structure for refugees and immigrants of Kavala, Kavala, Greece, and the Pre-Removal Detention Center (PROKEKA) for Foreigners of Kos, Kos, Greece. The study aims to assess the basic ophthalmological condition of the refugee/immigrant population and is developed in two main areas: 1. The recording of the ophthalmological care that the refugee/immigrant has received until his/her inclusion in the study through a structured questionnaire (eg previous examinations, spectacle utilization, pharmaceutical or other interventions, etc.) 2. The measurement of monocular best-spectacle corrected visual acuity in both eyes using a web-based visual acuity chart. Adult participants living in the two aforementioned centers will be recruited in a consecutive-if-eligible basis. All age groups will be proportionally represented (proportional age distribution).
This is a bilateral, 2-week dispensing, non-randomized, controlled, single-masked, single-arm study to evaluate overall vision and comfort
This is a 5-Visit, single-arm, single-site, subject masked, dispensing trial to evaluate contact lens discomfort and inflammatory biomarker expression.
This is a single-masked, two-arm, parallel-group, randomized-controlled, dispensing clinical trial to evaluate the visual performance.
This is a bilateral, dispensing, randomized, controlled, subject-masked, 2-arm parallel study to evaluate safety and efficacy
This will be a 5-visit, randomized, partially single-masked, bilateral wear, dispensing, 2-treatment × 2-period crossover study with spectacle-wear washout and wash-in periods.
The study is a bilateral, single-masked, single-arm, 4-visit dispensing study evaluating the visual performance of the study lenses.
This will be a single centre pilot study to evaluate appearance of the Meibomian glands.
This is a single-masked, bilateral, controlled, randomized, 2x2 crossover, non-dispensing clinical trial to characterize the effects of an HEV-Blocker on several measures of visual function in a presbyopic population.
The study is a bilateral, single-masked, single-arm, 4-visit dispensing study. There will be one study treatment, with the subject being dispensed lenses for 6 to 8 days, then lens power will be optimized (if necessary) and dispensed for a further 2 weeks to assess the clinical performance of investigational multifocal toric contact lenses.