View clinical trials related to Visual Acuity.
Filter by:This is a single-site, 4-visit, contralateral, dispensing, open-label, randomized study. Each eligible subject will be randomized into one of two sequence groups to wear two lens types contralaterally (Test on the right eye and Control on left eye or vice versa).
This is a single-masked, randomized-controlled, dispensing clinical trial. A total of approximately 40 eligible hyperopic and myopic subjects will be targeted to complete the study. The subjects will be fit in the first study lens and worn for a total of 8-12 days following a 7±3 day wash-out period. The procedures will be repeated for the 2nd lens.
This is a single-masked, dispensing clinical trial. A total of approximately 48 myopic and 32 hyperopic eligible subjects will be targeted to complete the study. Subjects will be fit in the study lens, optimized if required and worn for approximately 2 weeks. Subjects will then have a washout period of approximately 1 week and be refit in the lenses and be dispensed for an additional 2 weeks of wear.
This is a double-masked, randomized, bilateral, 2-Arm parallel group study. Subjects are scheduled for 3 study visits (screening/baseline, 7-Day and 30-Day follow-up visits) over a period of one month.
This study is a multi-site, randomized, double-masked, 2×2 crossover design, 1-week dispensing study. Subjects will wear both Test and Control lenses in each eye 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 clinical study will investigate the difference in ocular characteristics between contact lens wear and spectacle wear among habitual contact lens wearers, using a 2-treatment by 2-period cross-over design. There will be a 1-week washout between the two study periods to eliminate any potential carryover effect.
This is a 2-Part, 8-Visit, single-center, open-label, bilateral and dispensing clinical study. In Part 1 (Visits 1-4) all subjects will be Test Lens 1, in Part 2 (Visits 1-4) eligible subjects will be dispensed Test Lens 2 based on their responses to the CLDEQ-8 questionnaire. Subjects scoring between 11 and 19 on the CLDEQ will not continue into Part 2
The clinical study is a randomized-controlled, double-masked, crossover clinical trial with two study treatments to compare two study lens types and the initial performance, in terms of the subjective response after a period of lens dispensing. The study will last approximately 2 to 4 months.
This is a 5-visit, controlled, bilateral, randomized, subject-masked, crossover (4 treatments x 4 period), non-dispensing study. Subjects will attend all study visits in their spectacle correction having not worn contact lenses on the day of the visit.
This will be a 4-visit, multi-site, randomized, brand-masked, bilateral, 2×2 crossover study. If a subject is found to meet all eligibility criteria, they will be randomized to one of two lens wear sequences. Each lens type will be worn for approximately 2 weeks.