Home » Clinical Trials »  Search Clinical Trials

Therapeutic Areas:  |  Ophthalmology

Search Medical Condition
Please enter condition
Please choose location from dropdown
 

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.

RESULTS

Found (24) 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 ...

Phase

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

A Comparison of LASIK Outcomes Using Two Femtosecond Lasers

Patients will have a comprehensive eye examination once they express an interest in the study. This includes a slit lamp examination of the front of the eye and a dilated fundoscopic examination of the back of the eye. If there is any pathology noted that would exclude the patient from ...

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

Visual Outcomes for Toric Efficacy Study

This is a crossover study of two types of contact lenses (toric orthokeratology and soft multifocals). Primary aims are to quantify correction of astigmatism, subjective and objective visual performance, aberrometry, peripheral refraction and bacterial bioburden between toric orthokeratology and soft toric multifocal contact lenses.

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

Accuracy of Corneal Astigmatism in Different Region Modes

To analyze the difference between measured total corneal astigmatism and actual corneal astigmatism under different region modes and optimize the region setting.

Phase N/A

Visual Outcomes of Topography Guided Photorefractive Keratectomy (PRK) for Treatment of Patients With Irregular Cornea

Irregular astigmatism is one of the most serious and frequent complications of corneal refractive surgery and one of the worst sequelae of other forms of corneal surgery . It is also considered as one of common, serious complications of corneal injuries . Spectacle correction is usually not useful in the ...

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