astigmatism Clinical Trials
A listing of astigmatism medical research trials actively recruiting patient volunteers. Search for closest city to find more detailed information on a research study in your area.
Found 26 clinical trials
Femtosecond Laser Arcuate Keratotomy Versus Toric Intraocular Lens Implantation in Cataract Surgery
In modern cataract surgery, residual astigmatism continues to be one of the major factors influencing patients' visual quality and satisfaction. The goal of this study is to compare the clinical outcomes of femtosecond laser arcuate keratotomy in one eye and Toric intraocular lens implantation in the contralateral eye for astigmatism …
A Planned Study at Multiple Sites is Being Done to Compare the Results of Two Types of Trifocal Toric Intraocular Lenses Used in Cataract Surgery
To evaluate the clinical outcomes and patient satisfaction of two commercially available trifocal toric intraocular lenses Primary Objective: To compare the distance-corrected intermediate visual acuity between the two trifocal toric intraocular lenses. Secondary Objectives: To assess and compare the safety of two trifocal toric intraocular lenses.
A Prospective, Randomized Clinical Study of Two Phakic Toric Implantable Lenses
Primary Objective: To compare the efficacy and the residual refractive error of EYECRYLTM Phakic toric versus Visian® Toric ICL in moderate to high myopic patient with co-existing astigmatism. Secondary Objectives: To evaluate and compare the safety of EYECRYLTM Phakic toric versus Visian® Toric ICL in moderate to high myopic patients …
Effect of Corneal and Scleral RGP Lenses on Ocular Health and Visual Quality in Keratoconus
This study aims to compare the ocular health and visual quality of corneal rigid gas permeable lenses (CRGPL) and scleral rigid gas permeable lenses (SRGPL) for patients with keratoconus in a crossover clinical trial. The study will analyze subjective and objective outcomes, including best corrected visual acuity, contrast sensitivity, higher-order …
Contoura With Phorcides Compared to Wavefront Optimized LASIK
Comparing post-operative visual acuity and patient reported satisfaction between Contoura with Phorcides and WaveLight Wavefront Optimized.
Software Refraction With Mobilerone Versus Retinoscopy
Software refraction in the mobilerone for myopia and astigmatism is a novel medical device for myopia adults and elder children with or without astigmatism. And the investigators would like to test its accuracy and efficacy as well as safety.
Wavefront-guided LASIK Surgery Compared to Ray Tracing-Guided LASIK Surgery
We are enrolling participants aged 22 and older to have LASIK surgery in both eyes. We will perform wavefront-guided LASIK in one eye and ray tracing-guided LASIK in the fellow eye of each participant. We are trying to see if there are any differences in the efficacy between the two …
Algorithm-assisted Subjective Refraction Program Dedicated to Children
Current refraction assessment in children is dependent on the Eye Care Specialist and lacks standardization. Essilor has developed new algorithm assisted subjective refraction software dedicated to children of 6-12 years old and suitable for use with Vision-S™ and Vision-R™ phoropters, in addition to existing software. Two different versions of the …
A Study of Artificial Intelligence Assisted Small Incision Lenticule Extraction (SMILE) for Surgical Design and Influencing Factors
The goal of this observational study is to learn about the difference of refractive outcomes between Artificial Intelligence and experienced surgeon predicting Nomogram assist SMILE surgical design and the influenced factors of refractive outcomes in patients who underwent Small Incision Lenticule Extraction(SMILE) at the Refractive Surgery Center of Tianjin Eye …
An Evaluation of LASIK, SMILE and PRK Surgery in Physicians
The principle investigator is evaluating self-reported quality of vision and quality of life in physicians undergoing LASIK, SMILE and PRK surgery.
