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Photorefractive keratectomy (PRK)

PROCEDURE9 trials

Sponsors

Singapore National Eye Centre, Walter Reed Army Medical Center, Tabriz University, Democritus University of Thrace, Alcon Research

Conditions

Anisometropic AmblyopiaAstigmatismIrregular AstigmatismMyopiaMyopia ≤ -6 Diopters or Myopic Astigmatism ≤ -4 DioptersPupil Centroid ShiftRefractive Errors

Phase 2

Pupil Centroid Shift Compensation in Photorefractive Keratectomy Candidates
NCT03844178
Shahid Beheshti University of Medical SciencesPupil Centroid Shift
Start: 2019-02-10End: 2019-07-01Target: 104Updated: 2019-02-18

Phase 3

Comparison of Cross-cylinder and Conventional Photorefractive Keratectomy(PRK) in Correcting Medium-high Astigmatism
CompletedNCT00663923
Tabriz UniversityAstigmatism
Start: 2007-11-30End: 2009-12-31Updated: 2012-03-13

Unknown Phase

Efficacy of LASIK Versus PRK in Asians With Mild and Moderate Myopia
CompletedNCT00348049
Singapore National Eye CentreMyopia
Start: 2002-11-30End: 2005-08-31Updated: 2006-10-24
Evaluation of Conventional Photorefractive Keratectomy (PRK) in U.S. Army Personnel, Substudy of: Initial Evaluation of Excimer Laser Keratorefractive Surgery in U.S. Army Personnel
CompletedNCT00412568
Walter Reed Army Medical CenterMyopia
Start: 2004-05-31End: 2008-03-31Target: 150Updated: 2008-04-01
Efficacy of the Wavefront Optimized (WFO) Profile in Non-anterior Astigmatisms
CompletedNCT01432834
Democritus University of ThraceAstigmatism
Start: 2010-04-30End: 2011-04-30Updated: 2017-01-18
A Safety and Effectiveness Study of PRK Using the ALLEGRETTO WAVE® EYE-Q Excimer Laser System
CompletedNCT01699087
Alcon ResearchAstigmatism, Myopia
Start: 2012-08-31End: 2015-07-31Updated: 2019-09-30
Visual Outcomes of Topography Guided Photorefractive Keratectomy (PRK) for Treatment of Patients With Irregular Cornea
CompletedNCT03140046
Assiut UniversityIrregular Astigmatism
Start: 2017-03-01End: 2018-03-01Updated: 2020-05-11
Excimer Laser Surgery for Anisometropic Amblyopia
WithdrawnNCT03342235
Jaeb Center for Health ResearchAnisometropic Amblyopia, Refractive Errors
Start: 2020-06-30End: 2024-03-31Updated: 2020-05-20
Outcomes of a New Trans-epithelial Photorefractive Keratectomy (Streamlight PRK) Compared to Conventional PRK Procedures
CompletedNCT04710082
Assiut UniversityMyopia ≤ -6 Diopters or Myopic Astigmatism ≤ -4 Diopters
Start: 2020-06-01End: 2021-06-30Updated: 2021-07-20

Related Papers

Transepithelial photorefractive keratectomy: a prospective randomized comparative study between the two-step and the single-step techniques.
2022-07-2119 citations