View clinical trials related to Visual Acuity.
Filter by:This will be a 4-visit, randomized, controlled, single-masked, bilateral wear, dispensing, 2-treatment, 2-sequence, 2-period crossover study.
patients with maculopathy reported in low vision clinic are tested for prismatic glasses for near vision. The pre and post visual acuity was recorded.
This is a single-site, prospective, single-arm, open-label, real-world evidence study with a minimal study duration of 1-year, up to 2-year follow-up to evaluate overall visual acuity.
This is a 2-phase, single-site, non-dispensing, randomized, controlled, double-masked, 2x2 crossover study to objectively measure potential benefits of a new UV/HEV filter using psychophysical testing techniques.
This will be a split-plot design, randomized, parallel, double-masked feasibility study to evaluate the role of a test lens on contrast sensitivity with and without glare.
This is a subject-masked, randomized, bilateral, 2x2 crossover clinical investigation that will assess lens fit acceptance.
This is a multi-site, 4-visit, brand-masked, bilateral, 2x2 cross-over dispensing study to evaluate visual acuity.
The study is a bilateral, single-masked, single-visit, non-dispensing 2x2 crossover study to confirm a finalized design of a prototype contact lens. There will be eight study lens types, however, each subject will only be randomized to receive two study lens types.
The purpose of the study is to evaluate clinical and functional performance in real-world conditions in participants who have been implanted with Acrysof IQ Vivity (Extended Vision) IOLs compared with Alcon Aspheric Monofocal IOLs.
This study is a feasibility, multi-site, randomized, double-masked, 2-arm parallel group design, 2-week dispensing study with weekly visits to evaluate visual acuity.