To evaluate the reliability of different non-invasive skin probe measurements.

This study investigates the retinal vascular features, using optical coherence tomography angiography, in patients during one year's follow up after the endoscopic endonasal surgery to remove an intra-suprasellar pitituary adenoma compressing the optic nerve.

The Vienna Preserflo Microshunt Cohort Study is an observational study with a prospective postoperative examination in all glaucoma patients who had received a Preserflo Microshunt (PMS) as standalone procedure or in combination with cataract extraction in the time period between January and November 2019 at the Department of Ophthalmology, Medical University of Vienna. It is estimated that approximately 70 patients will be included of this cohort. The cohort will be invited for a prospective postoperative examination after 12 (±5) months of follow up. This examination shall comprise best corrected visual acuity, visual field test, intraocular pressure (IOP) measurement, slit lamp ...

Systemic sclerosis (SSc) is an autoimmune disorder characterized by early vascular endothelial involvement. SSc is a rare and devastating multi-visceral disease when fibrotic lesions extend to the skin and other tissues (heart, lungs, kidneys). The severity of skin involvement in SSc is correlated with functional prognosis and survival. To date, there is no validated tool for a reliable quantitative assessment of skin fibrosis. Optical coherence tomography (OCT) is an innovative non-invasive skin imaging technique that allows micrometric analysis of the superficial layers of the skin. Previous study showed that OCT could detect the loss of the dermal-epidermal junction in an ...

Post-market clinical evaluation of the Gentuity High-Frequency Optical Coherence Tomography (HF-OCT) System and the Vis-Rx Micro-Imaging Catheter for use in Percutaneous Coronary Intervention (PCI) procedures.

The present research aims to determine the impact of stenoses in downstream vessels on the FFR and iFR measurements of left main coronary artery (LMCA) stenoses of intermediate severity as determined by coronary angiography. Anatomic metrics derived from intravascular imaging modalities of IVUS and optical coherence tomography (OCT) will also be validated using as the comparator the FFRtrue and iFRtrue measurements pf LMCA lesions.

The purpose of this collaboration is to establish a multi-modality image database including coronary angiograms, optical coherence tomography (OCT), and computed tomography angiograms (CTA) for future studies. The main goal of this collaboration is to create a resource to promote further understanding of the pathobiology of atherosclerosis through image analysis.

The purpose of the study is to identify the presence of residual superficial and nodular basal cell carcinoma (BCC) status-post curettage and desiccation (C&D) by using optical coherence tomography (OCT).

The objective of this study is to perform a prospective, longitudinal analysis of clinical and imaging findings from normal controls and subjects with retinal vascular disease to better define the diagnostic imaging criteria that signify change in disease stage. This includes disease progression in early stages of disease or disease regression with appropriate standard-of-care treatment. Subjects will be identified from healthy subjects (seen for screening eye exams) and diseased subjects undergoing standard-of-care treatment or screening at eye clinic locations. The study population will include subjects with retinal vascular disease including but not limited to diabetic retinopathy, hypertension, retinal vein/arterial ...

Despite recent advances in interventional cardiology, bifurcation coronary artery stenoses (which account for 15-20% of all coronary lesions treated by PCI), remain a challenge for PCI operators with higher rates of failure, in-stent restenosis, stent thrombosis, and recurrent clinical events, when compared to simple non-bifurcation lesions. POMPEI trial is a prospective observational study. We aim to investigate the impact of morphological plaque characteristics assessed by optical coherence tomography (OCT) on the risk of developing side branch occlusion (SBO) in bifurcation PCI. A total of 27 patients undergoing bifurcation PCI will be recruited into the trial. PCI will be performed according ...

Reduce the trauma and the time taken for patient rehabilitation. The prevailing trend is to perform a mitomycin- C (MMC)-augmented trabeculectomy and trabeculectomy with ologen implants in a trial to decrease bleb failure as a common post- trabeculectomy complication. Is to develop a measurement protocol by OCT-A imaging and characterization of the bleb vascularity changes in glaucoma patients before and after surgery.

Retinal imaging is a corner stone in diagnosis of most retinal disorders. Standard imaging techniques e.g. fluorescein angiography and color fundus photography have a lot of limitations including limited resolution, invasive nature in cases of fluorescein angiography, and inability to segment the retina, accordingly, and only 2D image is provided. Optical coherence tomography angiography (OCTA) is a recent noninvasive imaging technique that allows for volumetric visualization of eye vasculature. OCTA has shown promise in better elucidating the pathophysiology of several retinal vascular diseases. Swept-source OCTA uses long wavelength ̰ 1,050nm, which can penetrate through deeper layers of the eye ...

230 participants at Eye Hospital of Wenzhou Medical University during June, 2019 and August, 2019 were enrolled in this study. 230 right eyes and 88 left eyes were included for the measurement. All the measurements were performed under non-mydriatic conditions in a dim examination room using the CASIA2 swept-source AS-OCT system.

This study is a prospective comparative, randomized, single center study to gather agreement and precision data in all subjects.

Acute respiratory distress syndrome is a severe complication of critical illness. The diagnosis of ARDS is difficult, and it could be important to differentiate ARDS from other causes of acute respiratory failure. Innovative probe-based imaging techniques such as 'Confocal Laser Endomicroscopy' (CLE) and Optical Coherence Tomography (OCT) are high resolution optical techniques that, combined with conventional bronchoscopy, have been found to provide non-invasive, real-time near-histology information about the alveolar compartment in non ventilated non-critically ill patients.

The investigators wish to better understand the role of the choriocapillaris (CC) in the formation and progression of non-exudative in age related macular degeneration (armd) by imaging the retinal pigment epithelium (rpe) and the choroidal microvasculature and by studying their inter-dependence to determine if the loss of the CC could prove useful as an anatomic clinical trial endpoint in future drug trials.

The objective of this study is a comparative evaluation of Orsiro stent and of Resolute Integrity stent in terms of the extent of neointima formation at 3 months after implantation using optical coherence tomography (OCT).

The purpose of current study is to provide a comprehensive comparison of the reliability of corneal topographic measurements between Optovue AS- OCT and a combined Scheimpflug imaging using Wavelight Oculyzer Pentacam HR in normal and keratoconus eyes.

Multiple sclerosis (MS) is a disease of the central nervous system (CNS). Several lines of evidence suggest that MS is an autoimmune disease with both T and B-cell activity leading to CNS inflammation which results in demyelinating injury. Ocrelizumab was FDA approved in March 2017 for relapsing remitting (RRMS) and primary progressive multiple sclerosis (PPMS) by depleting B cells. It has shown to be effective in reducing the annualized relapse rate, decreasing disability progression, and reducing the number of new and active MRI brain lesions. Previous research studies have reported a more aggressive course in African Americans with MS, more ...

Circumscribed choroidal haemangioma (CCH) is an uncommon, potentially congenital benign vascular hamartomas which typically manifests as an elevated mass with reddish-orange pigmentation located posteriorly to the equator, mostly in the macular and peripapillary region. Despite its benign nature, cystoid macular edema (CME) or SRF due to the exudations from the exudative CCH can cause visual impairment. Diagnosis is often suspected clinically, and multimodal imaging is useful for the differential diagnosis of CCH from other malignant tumors such as melanoma. Optical coherence tomography angiography (OCTA) is a rapid, non-invasive, new imaging technology which could provide the capillary density (CD) of superficial ...

Optical coherence tomography (OCT) provides valuable information to guide percutaneous coronary intervention (PCI) in acute coronary syndrome (ACS) regarding lesion preparation, stent sizing, and stent optimization.

The purpose of this study is to assess performance of measurements of anatomical and vascular structures of the eye based on OCT and OCTA scans in normal subjects and eyes with pathology.

Glaucoma is a chronic degenerative disease of the optic nerve. It is the second cause of blindness worldwide and a frequent cause of irreversible blindness. In 2020, epidemic health authorities have predicted about 80 million glaucoma patients. Glaucoma can be treated by topical treatment (eye drops), laser or surgery. A premature diagnosis of glaucoma is very important to prevent irreversible blindness. Pachymetry, Optical Coherence Tomography (OCT) and visual fields exams are fundamental for the development of the glaucoma diagnosis. The severity of glaucoma is defined with Hodapp-Parrish-Andersen visual field criteria. According to these criteria, glaucoma can be classified as early ...

This is a common care study. A study for evaluating the quality of balloon inflation and stent application will be performed in 2D angiography alone in the control group and then by 2D and OCT angiography for the experimental group. The benefit could be an improvement in the results of revascularization of femoropopliteal lesions thanks to OCT which allows a 3D visualization of the arterial lumen.