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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.

RESULTS

Found (20) clinical trials

An Evaluation of LASIK SMILE and PRK Surgery in Physicians

The participants 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 participant ...

Phase N/A

AcrySof Toric IQ Post-Market Clinical Study

Patients will be examined pre-operatively to up to 3 years post-operatively. One eligible eye will be selected as a target eye for efficacy analysis. If both eyes are eligible, the eye in which the IOL is implanted first will be selected as the target eye.

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 Customized PRK Versus Q-value Adjusted PRK in Correction of Myopia With or Without Astigmatism

This study will include patients who will undergo PRK in both eyes, for each patient each eye will be randomly allocated to one of 2 procedures: topography-guided ablation in one eye (group I) and Q-factor customized ablation in the other eye (group II). Alcon/Wavelight Light Laser Technologie (GmbH, Erlangen, Germany) ...

Phase N/A

Advanced Surface Ablation (ASA) vs Laser-Assisted In Situ Keratomileusis (LASIK)

Excimer laser vision correction (LVC) is a widely used procedure to correct nearsightedness, farsightedness, and astigmatism by reshaping the surface of the eye (cornea). Laser-Assisted In Situ Keratomileusis (LASIK) and Advanced Surface Ablation (ASA) and are techniques currently used to prepare the cornea for Excimer LVC. This review is intended ...

Phase N/A

Comparison Between FS- LASIK and FS-SMILE for Correction of Myopia and Myopic Astigmatism

Rationale and Background LASIK (laser in situ keratomileusis) is a surgical procedure designed to correct refractive errors. LASIK involves creating a corneal flap using a microkeratome followed by reshaping the cornea using an excimer laser to remove tissue from the underlying stromal bed and then replacing the corneal flap. LASIK ...

Phase N/A

Rotational Stability of V4C Toric Implantable Contact Lenses After On Axis Implantation Measured With OPD Scan 3

The recently introduced toric V4c toric ICL (STAAR Surgical Company, Monrovia, CA, USA) has been designed with a 360-m central hole to allow aqueous humor to flow without the need for an iridotomy. As far as the investigators certain, there have been not well-established prospective studies on the role of ...

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

Evaluating the Effect of Laser Vision Surgery Phakic Intraocular Lens Implantation Cataract Surgery and Pupil Dilation on the Iris Recognition Scanner Function of Smartphone

This study included patients who visit for refractive surgery (photorefractive keratectomy, photorefractive keratectomy with with corneal collagen cross linking, laser in situ keratomileusis, small incision lenticule extraction), phakic Intraocular Lens implantation (Implantable Collamer Lens, artiflex), and cataract surgery. Patients will be examined whether iris recognition scanner of smartphone works before ...

Phase N/A

Randomized Non-inferiority Trial Comparing SMILE and LASIK

Surgical correction for refractive errors may be performed by a number of procedures. Laser correction involves procedures such as EpiLASIK, LASIK or conductive keratoplasty, while lens based corrections involve the use of phakic intra-ocular lenses. Despite the emergence of other procedures, due to its fast visual rehabilitation and painless postoperative ...

Phase N/A