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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 (25) clinical trials

If you are age 18 or over and are an experienced soft contact lens wearer and you have been told by your doctor that you have astigmatism, you may be eligible to participate in a clinical trial. Please call Oculus Research at 919-346-6945 for more information. ClinicalTrials.gov Identifier: NCT03681808  

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

Post-market Study to Obtain Surgeon Feedback on Clinical Outcome in Eyes Implanted With TECNIS Toric II IOL

This is a multicenter, prospective, single-arm, open-label, clinical study of the commercially available TECNIS Toric II, Model ZCU IOL. The study will be conducted in up to 1100 subjects enrolled with 1,000 subjects needing unilateral or bilateral cataract surgery across up to 50 US study sites.

Phase N/A

Dresden Corneal Disease and Treatment Study

Corneal ectasia (e.g. keratoconus) is a corneal disease that is characterized by irregular steepening of corneal curvature, stromal thinning and reduced biomechanical properties. As a result of this, visual acuity is reduced and can improved by spectacles in early state or with rigid gas permeable contact lenses in mild as ...

Phase N/A

Refractive Accuracy of "2WIN" and Portable Autorefractors

A closeness-of-fit algorithm utilizing vector transformations of astigmatism is designed and applied to 50-years of clinical international refractive experience. As a part of new and follow up comprehensive eye examinations, patients and parents consented to confirm the cycloplegic refraction to other portable refractive tools. The ability of photoscreeners "2WIN" ("Adaptica," ...

Phase N/A

A Study With Technolas TENEO 317 Model 2 Excimer Laser to Treat Participants With Myopia or Myopic Astigmatism

Technolas TENEO 317 Model 2 excimer laser is a scanning excimer laser that operates at 193 nm ultraviolet wavelength to photoablate corneal tissue in order to achieve a refractive change. It is planned to enroll and treat up to 334 participant eyes, with an expectation that 300 study eyes will ...

Phase N/A

Non-comparative Trial Following Participants Implanted Bilaterally With Mini WELL Toric Ready Intraocular Lens for 6 Months After the Second Eye Implant (FUSION)

This is an interventional, multicenter, non-comparative post-marketing clinical investigation in participants implanted bilaterally with the Mini WELL Toric Ready intraocular lens (IOL) for 6 months after the second eye implant. The objective of this study is to evaluate the clinical performance of the Mini WELL Toric Ready IOL, in particular, ...

Phase N/A

Clinical Investigation of the Vision-R800 Device.

Randomized, bilateral, cross-over dispensing study of a standard and VR800 refraction and associated spectacle lenses.


Treatment of Vision Disturbances Due to Corneal Irregularities by Trans-epithelial Optical Phototherapeutic Keratectomy (TE-oPTK)

Complications after laser eye surgery can often result in the front surface of the eye (the cornea) becoming irregular, which causes visual symptoms such as halos, glare, starbursts, double vision, and reduced contrast sensitivity. For the past 20 years, corneal irregularities have been treated using wavefront-guided ablation, topography-guided ablation or ...

Phase N/A

Neural Mechanisms Underlying Astigmatism

The presence of astigmatism can lead to substantial reductions in visual performance in a variety of clinical vision measures and functional visual tasks. However, the neural mechanisms underlying the astigmatism remains unknown. The current study recruited three groups (patients with with-the-rule astigmatism and amblyopia, patients with with-the-rule astigmatism but without ...

Phase N/A