Clinical trials: Anterior Segment Disorders
Diabetic Macular Edema
Anterior and Posterior Segment Vascular Changes Following Laser and Anti-Vascular Endothelial Growth Factor (VEGF) Treatment of Diabetic Retinopathy
The study will investigate changes in the structure and function of blood vessels in the front and back of the eye following laser and anti-VEGF treatments for sight-threatening diabetic eye disease.
- Trial name
- VEGF (NCT01196325)
- Where
- Canada
- Volunteers
- 64 people, healthy volunteers welcome
- Sponsor
- University of Toronto
Keratoconus
Evaluation of the Keratoconic Cornea After Corneal Collagen Cross Linking.
Aim of work: To detect abnormal corneal thinning in keratoconus using pachymetry maps measured by high-speed anterior segment optical coherence tomography (OCT).
- Trial name
- NCT03879421
- Testing
- Accelerated corneal collagen cross linking
- Where
- Egypt
- Volunteers
- 44 people
- Sponsor
- Reham Mahmoud Abdelrahman
Keratoconus
Assessment of Corneal Stiffness in Keratoconus After Crosslinking by Corvis ST and OCT.
Objectives: Measurement of corneal stiffness parameters { Deformation Amlitude (DAR1), Integrated radius, Stress parameter (SP A1), Stress strain index (SSI) and Corvis biomechanical index (CBI) } in keratoconic corneas before…
- Trial name
- NCT05161052
- Testing
- Corvis ST (dynamic Scheimpflug technology)
- Volunteers
- 55 people, healthy volunteers welcome
- Sponsor
- Cairo University
LAD (Left Anterior Descending) Coronary Artery Stenosis
Reconstruction of Diffusely Diseased Left Anterior Descending with Left Internal Mammary Artery On-lay Patch or Saphenous Vein Patch Without Endarterectomy by Opening the Whole Wall of the Diseased Segment(s) Has Less Risk and Fewer Complications Compared to Endarterectomy Technique
The objective of this study is to compare different surgical strategies for management of severely diseased LAD artery during CABG i.e. LIMA on-lay patch vs.
- Trial name
- NCT06835114
- Testing
- CABG, LIMA on lay patch, Safenous vein patch
- Volunteers
- 90 people
- Sponsor
- Assiut University
Angle Closure Glaucoma, Glaucoma
Short-term Outcomes of Iridoplasty for Persistent Angle Closure Despite Patent Iridotomies
Purpose: To evaluate short-term angle opening after argon peripheral iridoplasty using AS-OCT and to report its complications at 1-week and 1-month follow up in patients that did not achieve a satisfactory clinical angle opening…
- Trial name
- ALPIECA (NCT02199158)
- Testing
- Argon Laser Peripheral Iridoplasty
- Where
- Mexico
- Volunteers
- 10 people
- Sponsor
- Instituto de Oftalmología Fundación Conde de Valenciana
Keratoconus, High Myopia
Anterior Segment and Corneal Parameters in Keratoconus and High Myopic Astigmatism Using Schiempflug Imaging
The purpose of this study was to compare Scheimpflug corneal tomography findings in keratoconus and high myopic astigmatic eyes, as well as to establish the parameters distinguishing keratoconus from high myopic astigmatism.
- Trial name
- NCT06739018
- Testing
- pentacam scheimpflug tomography
- Where
- 2 sites in Egypt
- Volunteers
- 66 people
- Sponsor
- Assiut University
Eye Diseases
Manual Versus Automated Choroidal Thickness Measurements Using Swept-source Anterior Segment OCT
The choroid, which is located between the retina and the sclera, is a connective tissue layer that is densely packed with blood vessels and is responsible for supplying oxygen and nutrients to the retina's periphery.
- Trial name
- NCT05211089
- Testing
- Optical Coherence Tomography imaging of choroid
- Where
- Egypt
- Volunteers
- 80 people
- Sponsor
- Assiut University
ST Elevation (STEMI) Myocardial Infarction
PICSO in Patients With STEMI Treated by Primary Percutaneous Coronary Intervention
A prospective multi-center study in which patients with an acute heart attack (in the left anterior descending artery) with ECG changes (ST segment elevation) receive angioplasty followed by stent placement and 90 minutes of…
- Trial name
- pRAMSES (NCT01493037)
- Testing
- PICSO (Pressure-controlled Intermittent Coronary Occlusion
- Where
- 2 sites in Netherlands
- Volunteers
- 30 people
- Sponsor
- Miracor Medical SA
Eye Injuries
Anterior Segment Spectral-domain Optical Coherence Tomography in Patients With Closed Globe Injury
This study use anterior segment spectral-domain optical coherence tomography (SD-OCT) to exam patients with closed globe injury, and compared with slit lamp examination.
- Trial name
- NCT02638025
- Testing
- OCT
- Volunteers
- 16 people
- Sponsor
- Huizhou Municipal Central Hospital
Blepharitis, Conjunctivitis
Evaluation and Treatment of Patients With Corneal and External Diseases
This study offers evaluation and treatment for patients with certain corneal and external diseases of the eye (diseases of the surface of the eye and its surrounding structures).
- Conditions
- Blepharitis, Conjunctivitis, Corneal Disease, Dacryoadenitis
- Trial name
- NCT00008541
- Where
- United States
- Volunteers
- 600 people
- Sponsor
- National Eye Institute (NEI)
Class II Division 1 Malocclusion
Evaluation of Micro-osteoperforation on Rate of Maxillary En-masse Retraction
accelerated anterior teeth retraction with the help of microosteoperforation procedure and miniscrews.
- Trial name
- NCT03764189
- Testing
- microosteoperforation
- Where
- Egypt
- Volunteers
- 13 people, healthy volunteers welcome
- Sponsor
- Cairo University
Ophthalmopathy , Lacrimal System
Evaluation of Lacrimal Punctal Changes by Anterior Segment Optical Coherence Tomography AS-OCT After Topical Combined Antibiotics and Steroids Treatment in Cases of Inflammatory Punctual Stenosis
Punctal stenosis is an important etiological factor that should be considered when assessing patients with epiphora. Anatomically, acquired punctal stenosis is a condition in which the external opening of the lacrimal canaliculus…
- Trial name
- NCT05028907
- Testing
- 5 mg chloramphenicol, 1 mg dexamethasone sodium phosphate, 0.25 mg tetryzoline hydrochloride, 2 mg Hydroxypropyl Methyl Cellulose, 10 mg α-tocopherol acetate and 8 mg macrogol 400)., sodium hyaluronate, polyethylene and propylene glycol based) three times daily for three months
- Where
- Egypt
- Volunteers
- 64 people, healthy volunteers welcome
- Sponsor
- Sohag University
Age Related Cataracts, Pseudoexfoliation Syndrome
Outcome of Two Surgical Methods for IOLImplantation in Eyes With Pseudoexfoliation Syndrome
The aim of this study is to compare the surgical outcomes of the two IOL implantation methods for eyes with cataract and PEX in a single-center and with highly experienced surgeons.
- Trial name
- NCT06053554
- Testing
- Phakoemulsification, Ziemer Z8 Femtolaser, Kowa Avansee Preset
- Where
- Austria
- Volunteers
- 120 people
- Sponsor
- Medical University of Vienna
Posterior Chamber Phakic Intraocular Lens, Vault
Study on the Diagnostic Efficacy of ICL Selection and Prediction Depth Model Based on Eye Images
To evaluate the diagnostic efficacy of deep learning network model in implantable collamer lens selection and prediction in a multicenter cross-sectional study
- Conditions
- Posterior Chamber Phakic Intraocular Lens, Vault, Deep Neural Network, Myopia
- Trial name
- NCT06669728
- Testing
- AI diagnostic algorithm
- Where
- China
- Volunteers
- 326 people, healthy volunteers welcome
- Sponsor
- Second Affiliated Hospital of Nanchang University
Cataract
Pseudophakic Eyes With Presbyopia-correcting IOLs: OCT Biometry and Pyramid Aberrometry
To correlate ocular morphology from anterior segment OCT and pyramid wavefront sensing in order to comprehensively analyze pseudophakic in vivo image quality of presbyopia-correcting IOLs in cataract patients.
- Trial name
- NCT07436247
- Testing
- Osiris-T Pyramid Wavefront Sensor - (CSO, Italy)
- Where
- 2 sites in Austria
- Volunteers
- 80 people
- Sponsor
- Prim. Prof. Dr. Oliver Findl, MBA
Anterior Segment Ischemia (Diagnosis)
Effects of Selenium and Melatonin on Ocular Ischemic Syndrome
ABSTRACT: PURPOSE: To determine the effects of selenium, melatonin and selenium + melatonin administered for one month on anterior chamber (AC ) malondialdehyde (MDA) and AC glutathione (GSH) levels in patients with Ocular…
- Trial name
- NCT04005222
- Testing
- SELENIUM, MELATONIN
- Volunteers
- 28 people, healthy volunteers welcome
- Sponsor
- Beytepe Murat Erdi Eker State Hospital
Corneal Neovascularization, Corneal Graft Failure
Subconjunctival IVIg (Gamunex-C) Injection for Corneal Neovascularization and Inflammatory Conditions
The purpose of the study is to test the investigational drug Gamunex-C on the growth of blood vessels over the cornea. This study is being conducted by Dr. Balamurali Ambati at the Moran Eye Center at the University of Utah.
- Conditions
- Corneal Neovascularization, Corneal Graft Failure, Anterior Segment Inflammation
- Trial name
- NCT02042027
- Testing
- Gamunex-C
- Where
- United States
- Sponsor
- University of Utah
Lens Diseases
Evaluating Presbyopia-Correcting IOLs in Complex Cataract Cases With Anterior Segment Abnormalities
The goal of cataract surgery has evolved from simply restoring sight to providing clear and comfortable full-range vision. Traditionally, monofocal IOLs remain the routine choice for special cases with anterior segment…
- Trial name
- NCT07321756
- Testing
- Unilateral Posterior Chamber Implantation of Presbyopia-Correcting IOL, Unilateral Posterior Chamber Implantation of Monofocal IOL
- Where
- China
- Volunteers
- 320 people
- Sponsor
- Second Affiliated Hospital, Zhejiang University, School of Medicine
Cataract
A Novel Congenital Cataract Category System
Congenital cataracts (CC) are the leading cause of childhood visual disabilities and treatable childhood blindness worldwide1. CC patients have a wide range of presentations of lens opacities and are generally categorized into…
- Trial name
- NCT02793869
- Where
- China
- Volunteers
- 428 people
- Sponsor
- Sun Yat-sen University
Class I Malocclusion, Maxillary Prognathism
Nano Coated Orthodontic Miniscrews for en Mass Retraction of the Upper Arch
study will be directed to evaluate silver-hydroxyapatite nano-coated versus uncoated orthodontic miniscrews for en masse retraction of the upper anterior segment.
- Conditions
- Class I Malocclusion, Maxillary Prognathism, Orthodontic Tooth Movement
- Trial name
- NCT07521267
- Testing
- Silver nanoparticles, uncoated titanium miniscrews
- Where
- Egypt
- Volunteers
- 14 people
- Sponsor
- Al-Azhar University