View clinical trials related to Visual Acuity.
Filter by:This is a two-arm, open-label, bilateral dispensing clinical investigation. Eligible subjects will proceed to either a low-sphere or high-sphere arm based on refraction measurements in the baseline assessment.
This is a multi-site, randomized, bilateral, dispensing, parallel design study with two arms to evaluate contact lens related dry eye symptoms and subjective comfort.
This is a single-masked, 2×3 crossover, randomized, dispensing clinical trial to evaluate the visual performance and subjective responses of the JJVC Investigational Contact Lens.
This is a bilateral, dispensing, randomized, controlled, double-masked, 2×2 cross-over study to evaluate the clinical performance of ACUVUE OASYS® 1-Day for Astigmatism contact lenses produced on a recently qualified manufacturing line.
This will be a single center pilot study to evaluate appearance of the Meibomian glands.
Suppression of the optokinetic nystagmus when a target is perceived can be applied to assess visual acuity objectively. Our aim is to establish prediction intervals for this optokinetic nystagmus suppression test (Speedwheel Test, SW) so that SW acuity may be used to estimate Snellen acuity (FrACT- C and -E) in the clinic in adults and children unable to cooperate in other acuity testing.
The conventional examination of the visual acuity (VA) does not take into account the patient's reading speed. However, the consideration of the speed for the recognition of the VA charts' symbols leads to the more accurate and comprehensive assessment of the visual capacity. Therefore, primary objective of this study is to develop and validate a new parameter for the more comprehensive evaluation of visual capacity: the critical visual acuity (CVA). CVA takes into account the speed of recognition of the symbols of the distance visual charts.
This is a 6-visit, subject-masked, multi-site, 2×3 crossover dispensing trial that will last approximately 2 - 4 months.
This is a 6-visit, subject-masked, multi-site, 2×3 crossover dispensing trial that will last approximately 2 - 4 months.
This is a single visit, 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 in a random order with a 5-minute washout period in between study lenses.