View clinical trials related to Visual Acuity.
Filter by:The clinical study is a bilateral, single-masked (partial), single-arm, clinical trial. A total of approximately 60 eligible subjects both near-sighted and far-sighted, will be targeted to complete the study. Subjects will be fit in the study lens for approximately 2-4 days then undergo lens optimization, if required. Subjects will then be given a new pair of lenses that will be worn for approximately 2 weeks.
This study is a multi-site, randomized, double-masked, 2×2 crossover design, 1-week dispensing study. Subjects will wear bilaterally both Test and Control lenses in a random order for 1-week each as a daily disposable modality with a wash-out period of 1 week between the wearing periods.
This will be a randomized, double-masked, bilateral, cross-over, 2 treatment by 2 period dispensing study. There will be 4 visits. There will be a 2 to 5 day washout period between treatments.
This is a prospective randomised controlled trial to determine the performance of Best Corrected Visual Acuity (BCVA) scores using the ETDRS number chart were compared with ETDRS alphabet chart in healthy eyes of patients who do not recognise the English alphabet.
Open label exploratory study of the EyeQue Insight in healthy volunteers >=7 years of age.
The investigator will take a mixed-methods approach to gather relevant information from both children or adolescents, and their parents on profiles of eye health, as well as routinely available indicators. This includes a series of baselining and follow-up analyses of cohort data collected on epidemiological, clinical, therapeutic, and service aspects of eye health and individual-level outcomes
MAIN OBJECTIVE: To assess the influence of residual astigmatism on visual acuity in the different lens foci in patients operated on for cataracts with a trifocal intraocular lens implant. SECONDARY OBJECTIVE: To study the influence of residual astigmatism on the visual quality of the patient in the far focus and to determine if there are differences of affectation in the two study groups.
This is a single-masked, crossover, randomized-controlled, dispensing clinical trial. A total of approximately 70 myopic eligible subjects will be targeted to complete the study.
This is a single visit, single site, brand-masked, non-dispensing, 2×2 bilateral crossover study. Each subject will be bilaterally fitted with one of the two test articles in each of the study periods.
This will be a prospective, single group, single-arm, and bilateral dispensing study. Subjects will be assigned to a single study lens type to be worn bilaterally in daily wear, and daily disposable modality, for at least 6 hours per day every day for approximately 12 weeks.