Clinical trials: Photorefractive Keratectomy
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
Corneal Wound Healing
Sutureless Cryopreserved Amniotic Membrane Graft (ProKera) and Wound Healing After Photorefractive Keratectomy
The purpose of this study is to evaluate the effect of ProKera on corneal wound healing after photorefractive keratectomy (PRK) in terms of re-epithelialization, pain, adverse effects, visual recovery, refractive accuracy, and…
- Trial name
- NCT00915759
- Testing
- ProKera, Bandage contact lens
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Walter Reed National Military Medical Center
Fruste Keratoconus, Risk of Ectasia
Combined CXL//UV and PRK or LASIK in Forme Fruste Keratoconus or Eyes With Potential Risk of Ectasia
This study is being performed to evaluate the efficacy of ultraviolet-A (UVA)-induced cross-linking of corneal collagen (CXL) in strengthening and optimizing the biomechanical and biochemical stability of the cornea in patients…
- Trial name
- NCT01726283
- Testing
- Corneal Cross-Linking, Riboflavin
- Where
- 8 sites in United States
- Volunteers
- 22 people
- Sponsor
- Cxlusa
Myopia
Study on the Effect of Mitomycin C 0.02% on the Corneal Endothelial After Photorefractive Keratectomy in Moderate Myopia
In this study 126 eyes in 63 patients with moderate bilateral myopia and astigmatism between -3 and -5 (SE difference between two eyes should not be more than 0.75 and the residual corneal thickness>350 μ ) were entered in the…
- Trial name
- NCT00999973
- Testing
- Mitomycin C 0.02%
- Where
- Iran
- Sponsor
- Shahid Beheshti University of Medical Sciences
Photorefractive Keratectomy
Evaluation of Efficacy and Safety of Topical 1% Medroxyprogesterone in the Corneal Epithelium Healing After PRK
In this clinical trial, it is decided that 30 patients who are candidates for photorefractive keratectomy will receive a drop of prepared medroxyprogesterone randomly in one of their eyes, in addition to the routine antibiotic…
- Trial name
- NCT05973253
- Testing
- prepared drop of medroxy progestrone acetat 1%
- Where
- 2 sites in Iran
- Volunteers
- 74 people, healthy volunteers welcome
- Sponsor
- Isfahan University of Medical Sciences
Dry Eye Syndromes
Efficacy of Cyclosporine for the Prevention and Treatment of Dry Eye Symptoms Following LASIK or Photorefractive Keratectomy
The purpose of this study is to evaluate the effect of topical cyclosporine ophthalmic solution 0.05% (Restasis, Allergan) on the signs and symptoms of dry eye in patients undergoing LASIK or photorefractive keratectomy (PRK).
- Trial name
- NCT00349440
- Testing
- Cyclosporine, Refresh Plus
- Where
- United States
- Volunteers
- 93 people
- Sponsor
- Innovative Medical
Refractive Surgery
CONTOURA vs WFO Ablation PRK & LASIK
This is a prospective randomized contralateral double-masked study. Each patient will be randomized as to which eye undergoes wave-front optimized (WFO) vs.
- Trial name
- NCT05037370
- Testing
- Wave-Front Optimized (WFO) ablation vs Topography-guided (TG) ablation
- Where
- United States
- Volunteers
- 400 people, healthy volunteers welcome
- Sponsor
- 59th Medical Wing
MODERATE AND HIGH MYOPIA
A Comparison of Photorefractive Keratectomy (PRK), PRK With Mitomycin-C and Laser Subepithelial Keratomileusis (LASEK) in the Treatment of Moderate and High Myopia
The purpose of this study is to assess whether there is a significant difference in visual outcomes or corneal haze after surface ablation for moderate and high myopia in active duty service members treated with PRK, Mitomycin-C…
- Trial name
- NCT00415077
- Testing
- PRK, MMC PRK, LASEK
- Where
- United States
- Volunteers
- 960 people, healthy volunteers welcome
- Sponsor
- Walter Reed Army Medical Center
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
Ophthalmology, Photorefractive Keratectomy ("PRK")
Ocular Bandage Gel (OBG) Pivotal Trial in Patients Undergoing Photorefractive Keratectomy ("PRK")
Prospective, randomized, masked (reading center), controlled pivotal study of Ocular Bandage Gel (OBG) vs. a bandage contact lens (BCL) in subjects who have undergone bilateral photorefractive keratectomy (PRK).
- Conditions
- Ophthalmology, Photorefractive Keratectomy ("PRK"), Laser Assisted Surgery, Refractive Surgery
- Trial name
- NCT03938883
- Testing
- Ocular Bandage Gel (OBG), Bandage Contact Lens (BCL)
- Where
- United States
- Volunteers
- 250 people, healthy volunteers welcome
- Sponsor
- Eyegate Pharmaceuticals, Inc.
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.
Pain After Photorefractive Keratectomy
The Role of Gabapentin in Postoperative Pain and Epithelialization After Photorefractive Keratectomy
The primary aims of this study are to determine if treatment with Gabapentin taken systemically (oral tablets) in patients who have photorefractive keratectomy (PRK) surgical treatments reduces post surgical neuropathic pain and…
- Trial name
- NCT01177514
- Testing
- Gabapentin, Sugar pill
- Where
- Mexico
- Volunteers
- 40 people
- Sponsor
- Codet Vision Institute
Pupil Centroid Shift
Pupil Centroid Shift Compensation in Photorefractive Keratectomy Candidates
patients who are candidates of PRK will be recruited in this intrasubject randomized clinical trial. Inclusion criteria are myopia or myopic astigmatism with refractive cylinder.
- Trial name
- NCT03844178
- Testing
- The option for compensation of Pupil centroid shift was ON, The option for compensation of Pupil centroid shift was OFF, installation of Tetracaine 1%
- Where
- Iran
- Volunteers
- 104 people
- Sponsor
- Shahid Beheshti University of Medical Sciences
Myopia
Preservative-free Topical Anesthetics for Post-PRK Pain
The goal of this interventional comparative study is to assess the efficacy and safety of a novel regimen of preservative-free unit-dose topical anesthetics for controlling early postoperative pain following single-step…
- Trial name
- NCT05733741
- Testing
- Preservative-free Benoxinate hydrochloride 0.4% (Benoxidia unit-dose vials [UD], Orchidia pharmaceutical Ind., Egypt), Preservative-free Sodium hyaluronate 0.2% (Polyfresh unit-dose vials [UD], Orchidia pharmaceutical Ind., Egypt).
- Where
- Egypt
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- Assiut University
Irregular Astigmatism
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 .
- Trial name
- NCT03140046
- Testing
- photorefractive keratectomy (PRK)
- Where
- Egypt
- Volunteers
- 20 people
- Sponsor
- Assiut University
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
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
Must be PRK Candidate
Safety and Efficacy of Lotemax Versus FML in Subjects Undergoing PRK for the Correction of Mild to Moderate Myopia, 3- Month Follow-up Study
STUDY OBJECTIVE: To evaluate and compare the safety and efficacy of (corneal Wound Healing and Intraocular Pressure) Fluorometholone and Loteprednol after photorefractive keratectomy (PRK) surgery.
- Trial name
- NCT02974387
- Testing
- Fluorometholone(FML), Loteprednol (Lotemax)
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Dr Salouti Eye Research Center
Refractive Error
Epithelial Healing and Visual Outcomes Using Omega-3 Therapy Before and After Photorefractive Keratectomy (PRK) Surgery
The purpose of this study is to demonstrate that omega-3 supplement can be use as an adjunct therapy for PRK patients. The investigators believe that omega-3 supplement will reduce the size of persistent epithelial defects (PEDS)…
- Trial name
- Omega-3 (NCT01059019)
- Testing
- Omega-3 Fatty Acid Supplements
- Where
- United States
- Volunteers
- 17 people, healthy volunteers welcome
- Sponsor
- University of California, San Diego