Clinical trials: Photorefractive Keratectomy
Myopia, Hypermetropia
Anesthetic Impregnated Bandage Soft Contact Lens (BSCL) in Pain Management After Photorefractive Keratectomy (PRK)
Compared to laser-assisted in situ keratomileusis (LASIK), Photorefractive Keratectomy (PRK) is associated with more discomfort and requires more downtime.
- Conditions
- Myopia, Hypermetropia, Refractive Errors, Astigmatism
- Trial name
- NCT04283331
- Testing
- Proparacaine Ophthalmic
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Beeran Meghpara, MD
Keratoconus
Combined Corneal Wavefront-guided TPRK and ACXL Following ICRS Implantation in Management of Moderate Keratoconus
Background: Keratoconus leads to gradual progressive loss of vision in young and adult patients. For visual rehabilitation and to hinder keratoconus progressionthe investigators designed this study to help the keratoconus…
- Trial name
- NCT04383301
- Testing
- Intracorneal ring segment implantaion as the first stage, ACXL and wafe front guieded TPRK as the second stage
- Where
- Saudi Arabia
- Volunteers
- 36 people
- Sponsor
- Shaaban Elwan
Myopia
Comparison of Conventional and Custom Photorefractive Keratectomy (PRK)
The study objective is to compare the clinical outcomes using wavefront guided PRK with iris registration and conventional laser PRK using FDA-approved laser technology on the same patient.
- Trial name
- NCT00713856
- Testing
- Custom PRK with iris registration, Conventional PRK
- Where
- United States
- Volunteers
- 44 people
- Sponsor
- University of Utah
Postoperative Pain
A Comparison of Pregabalin (Lyrica®) to Placebo in Pain Relief After Photorefractive Keratectomy (PRK) Surgery
The purpose of this study is to compare the efficacy of pregabalin to placebo for postoperative pain control after photorefractive keratectomy.
- Trial name
- NCT01097577
- Testing
- pregabalin
- Where
- United States
- Volunteers
- 130 people
- Sponsor
- 59th Medical Wing
Refractive Error, Myopia
Mechanical Versus Alcohol Epithelial Debridement During Hotorefractive Keratectomy (PRK)
In this prospective randomized clinical trial, confocal microscopy was used to evaluate the effect of mechanical versus alcohol-assisted epithelial debridement during photorefractive keratectomy (PRK)on corneal cellular elements.
- Trial name
- NCT00918697
- Testing
- Mechanical debridement, Alcohol-assisted debridement
- Where
- Iran
- Volunteers
- 33 people
- Sponsor
- Shahid Beheshti University of Medical Sciences
Hyperopia
Photorefractive Keratectomy (PRK) for Hyperopia After Radial Keratotomy
To assess the efficacy, predictability, stability and safety of corneal wavefront-guided photorefractive keratectomy (PRK) for correcting hyperopia and astigmatism after radial keratotomy (RK).
- Trial name
- NCT00917657
- Testing
- Photorefractive keratectomy
- Volunteers
- 36 people
- Sponsor
- University of Sao Paulo
Photorefractive Keratectomy, Corneal De-epithelialization
Study to Evaluate the Efficacy of Lagricel® Ofteno PF Compared to Thealoz® Duo After Photorefractive Keratectomy
Phase IV comparative, controlled, parallel group, open, randomized multicenter study to evaluate the efficacy of Lagricel® Ofteno PF Compared to Thealoz® Duo.
- Trial name
- PRO-037 (NCT04704518)
- Testing
- Sodium Hyaluronate Ophthalmic 0.4%, Trehalose 3% / Sodium Hyaluronate Ophthalmic 0.15%
- Where
- Mexico
- Volunteers
- 96 people
- Sponsor
- Laboratorios Sophia S.A de C.V.
Corneal Ulcer of Bilateral Eyes
Studying the Effect of Ethanol Applied on the Corneal Surface During PRK Surgery.
The goal of this observational study is to learn about the effects of the duration of ethanol contact with the corneal surface. The main question it aims to answer is: Does this affect the behavior of corneal epithelial healing?
- Trial name
- NCT06540131
- Where
- Egypt
- Volunteers
- 70 people
- Sponsor
- Minia University
Surgery, Myopia
Topo-guided LASIK and Photorefractive Keratectomy vs Wavefront LASIK and Photorefractive Keratectomy
This study evaluates the difference in results between eyes that have been treated wavefront optimized laser vision correction (either LASIK or Photorefractive Keratectomy) compared to eyes treated with topography-guided laser…
- Trial name
- NCT03075176
- Testing
- Wavefront optimized LASIK, Wavefront optimized Photorefractive Keratectomy, Topography-guided LASIK
- Where
- United States
- Volunteers
- 39 people
- Sponsor
- University of Utah
Photorefractive Keratectomy, Corneal Haze
Effect of Ectoine After Photorefractive Keratectomy (PRK).
This is a comparative, open label, parallel group, non interventional study aims to assess the effect of Ectoine containing eye drops on stromal haze, pain and epithelial healing after Photorefractive keratectomy (PRK).
- Trial name
- NCT05313425
- Testing
- Ectohylo (R) eye drops
- Where
- Egypt
- Volunteers
- 15 people
- Sponsor
- Tanta University
Myopia
Effectiveness and Safety of the TENEO 317 Model 2 Excimer Laser to Treat Myopia With or Without Astigmatism by Transepithelial Photorefractive Keratectomy
A Study to Investigate the Effectiveness and Safety of the TENEO 317 Model 2 Excimer Laser to Treat Myopia with or without Astigmatism by Transepithelial Photorefractive Keratectomy
- Trial name
- NCT06618547
- Testing
- TENEO 317 Model 2 excimer laser
- Volunteers
- 140 people
- Sponsor
- Bausch & Lomb Incorporated
Anisometropic Amblyopia, Refractive Errors
Excimer Laser Surgery for Anisometropic Amblyopia
Study Objectives To compare the efficacy and safety of surgical treatment (PRK) versus non-surgical treatment of anisometropic amblyopia in children who have failed conventional treatment due to non-compliance or non-response.
- Trial name
- ATS19 (NCT03342235)
- Testing
- Photorefractive Keratectomy (PRK), Patching 2 hours per day, Excimer Laser System
- Sponsor
- Jaeb Center for Health Research
Dry Eye
Dry Eye Evaluation After Transepithelial PRK
The aim of the study is to evaluate the severity of dry eye syndrome following excimer laser vision correction using no-touch all-laser photorefractive keratectomy in comparison to conventional lasik
- Trial name
- NCT02210793
- Testing
- transepithelial PRK, LASIK
- Where
- Egypt
- Volunteers
- 40 people
- Sponsor
- AL-Nour Eye Hospital
Corneal re-Epithelialization
A Study to Assess the Safety, Tolerability and Effect of Nexagon™ Applied to the Eye After PRK Laser Eye Surgery for Nearsightedness
Phase 1 randomized, prospective, double-masked, vehicle-controlled, dose-escalation study to evaluate the safety, tolerability and clinical effect of Nexagon™ in subjects following bilateral PRK for the correction of mild to…
- Trial name
- NCT00654550
- Testing
- Nexagon™ or Nexagon™ vehicle
- Where
- New Zealand
- Volunteers
- 24 people
- Sponsor
- OcuNexus Therapeutics, Inc.
Chronic Ocular Pain
Study of Efficacy and Safety of SAF312 Eye Drops in Subjects With Post-operative Corneal Induced Chronic Pain (CICP)
The study was designed to demonstrate the safety and efficacy of two dose concentrations of SAF312 eye drops (5 mg/mL and 15 mg/mL) in subjects with CICP persisting at least for 4 months after refractive or cataract surgery and…
- Trial name
- NCT04630158
- Testing
- SAF312
- Where
- 28 sites in United States, Japan and 1 more
- Volunteers
- 153 people
- Sponsor
- Novartis Pharmaceuticals
Refractive Errors
The Effect of Gabapentin (Neurentin) and Pregabalin (Lyrica) in Pain Reduction After Photorefractive Keratectomy
The studied patients will be given randomly one of three following drugs1:Gabapentin2: Pregabalin or placebo for 3 days after Photorefractive keratectomy surgery.
- Trial name
- PRK (NCT01122004)
- Testing
- Pregabalin
- Where
- Iran
- Sponsor
- Shahid Beheshti University of Medical Sciences
Refraction Error, Photorefractive Keratectomy
Comparison of Ketorolac Tromethamine 0.5%-Soaked Bandage Contact Lenses Versus Non-Medicated Bandage Contact Lenses on Postoperative Pain Control After Photorefractive Keratectomy
Photorefractive keratectomy (PRK) is a well-established surface ablation procedure for the correction of refractive errors. Despite excellent visual and refractive outcomes, postoperative pain remains a significant concern…
- Trial name
- NCT07705763
- Testing
- Ketorolac Tromethamine 0.5%-Soaked Bandage Contact Lenses, Contact Bandage Lenses
- Where
- Pakistan
- Volunteers
- 60 people
- Sponsor
- Madina Teaching Hospital Faisalabad
Myopia
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…
- Trial name
- NCT03291873
- Testing
- PRK
- Where
- 2 sites in Egypt
- Volunteers
- 104 people
- Sponsor
- Kasr El Aini Hospital
Surgical Procedure, Unspecified
Corneal Cross-linking and Refractive Surface Ablation in Patients With Asymmetric Corneas
The purpose of this study is to evaluate safety and efficacy of corneal cross-linking and photorefractive keratectomy for refractive correction in patients with bilateral asymmetric topography.
- Trial name
- NCT02943967
- Testing
- CXL + PRK group, PRK group
- Where
- Brazil
- Volunteers
- 44 people, healthy volunteers welcome
- Sponsor
- Federal University of São Paulo
Myopia
Initial Evaluation of Photorefractive Keratectomy in U.S. Army Personnel
The objective of this study is to conduct a prospective clinical trial to evaluate the safety and efficacy fo the VISX Excimer Laser system for the treatment of naturally occurring low to moderate myopia, with or without low…
- Trial name
- NCT00413673
- Testing
- PRK
- Where
- United States
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Walter Reed Army Medical Center