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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

Prospective Evaluation of the Long-term Effectiveness of the Femtosecond Laser-assisted Arcuate Incisions

The purpose of this prospective post-market-clinical-follow-up study is to address the long-term effectiveness of arcuate incisions, in eyes after VICTUS femtosecond laser-assisted astigmatic keratotomy. This study will be conducted at Gemini eye clinic in Zlin, Czech Republic by Dr. Pavel Stodulka who will examine up to 100 eyes who previously ...

Phase N/A

Intrastromal Correction of Ametropia by a Femtosecond Laser

This study evaluates the intrastromal correction of ametropia with a femtosecond laser made by 20/10 PERFECT VISION. This laser generates a beam of ultrashort, infrared pulses which enables very precise cuts in the cornea. By these cuts lamellae of the cornea are separated locally, and in the consequence the curvature ...


Compare Anterior Chamber Biometry in Healthy and Post-LASIK Patients

Accommodation is an action that enables projections of both distant and near objects to be brought into clear focus on the retina through changing of diopteric power of crystalline lens. Although the exact mechanism of accommodation remains inconclusive, most authors agree that contraction of ciliary muscle plays a pivotal role.1, ...

Phase N/A

Assessing the Astigmatism Reducing Effect With Toric IOLs in Eyeswith Low Astigmatism

With increasing demands of patients concerning refractive outcome after cataract surgery, toric intraocular lenses (IOLs) that correct corneal astigmatism have been introduced more widely to cataract surgery. Originally, toric IOLs were used mainly for patients with high degrees of astigmatism. Since a couple of years, toric IOLs are available from ...

Phase N/A

Performance of Two Toric Silicone Hydrogel Contact Lenses

The aim of this prospective study is to evaluate the clinical performance of Avaira Vitality toric and ACUVUE OASYS for ASTIGMATISM contact lenses after 2weeks of wear in each pair.

Phase N/A

Topography Guided LASIK by Different Protocols for Treatment of Astigmatism

Candidates for refractive surgery above 18 years with myopic astigmatism and no previous ocular surgery. Sample size 60 eyes. surgery: 60 eyes of myopic topography-guided LASIK procedures with the same refractive platform (FS200 femtosecond to create a flap between90: 110 m with diameter 8:9 mm and EX500 excimer lasers) will ...

Phase N/A

Apioc Contact Lens Feasibility

This is a one-site, non-dispensing clinical trial using the Apioc contact lens design. This soft contact lens study will determine the feasibility of this design by determining which parameters of the shape of the Apioc Contact Lens design will yield a successful fit across subjects. We will also determine the ...

Phase N/A

Comparison of Comfilcon A Toric Contact Lenses and Samfilcon A Toric Contact Lenses

The objective of this study is to evaluate the subjective acceptance of comfilcon A toric contact lens, compared to samfilcon A toric lens.

Phase N/A

Toric IOL vs Non-toric IOL With LRI for Corneal Astigmatism

This is a randomised controlled trial with intra-patient comparison (bilateral study) in which study patients will be randomized by a medical statistician to the implantation of the toric intraocular lens (IOL) (model MX60T, Bausch & Lomb) in one eye and the non-toric IOL model MX60 plus LRI in the fellow ...

Phase N/A

The MORE Study: Manifest vs. Online Refraction Evaluation

Uncorrected refractive errors cause significant economic implications in both high and low income countries in terms of the loss of potential productivity (Williams et al. (2015)). The prevalence of uncorrected refractive errors is, despite of the available clinical services, still huge; visual impairment is in 42 percent of the cases ...

Phase N/A