Articles that mention Wenzhou Medical College -Optical Coherence Tomography News

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2. Comparison of widefield swept-source optical coherence tomography angiography with ultra-widefield colour fundus photography and fluorescein angiography for detection of lesions in diabetic retinopathy
  
  Explore BJO Online Jun 30 2020 Ophthalmology
  
  Aims To compare widefield swept-source optical coherence tomography angiography (WF SS-OCTA) with ultra-widefield colour fundus photography (UWF CFP) and fluorescein angiography (UWF FA) for detecting diabetic retinopathy (DR) lesions. Methods This prospective, observational study was conducted at Massachusetts Eye and Ear from December 2018 to October 2019. Proliferative DR, non-proliferative DR and diabetic patients with no DR were included. All patients were imaged with a WF SS-OCTA using a Montage ...
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  Mentions: Johns Hopkins University Harvard University Boston University
3. The precision and agreement of corneal thickness and keratometry measurements with SS-OCT versus Scheimpflug imaging
  
  Explore Eye and Vision Jun 13 2020 Ophthalmology
  
  Purpose To assess the repeatability and reproducibility of swept-source optical coherence tomography (SS-OCT) and Scheimpflug system and evaluate the agreement between the two systems in measuring multiple corneal regions in children. Methods Pachymetric and keratometric maps for both systems were evaluated. Central, midperipheral and peripheral corneal thickness (CT), keratometry and astigmatism power vectors were recorded. The three outcomes yielded by the same observer were used to assess intraobserver repeatability. The ...
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  Mentions: Wenzhou Medical College Giacomo Savini
4. Three-Dimensional Assessments of Intraocular Lens Stability With High-Speed Swept-Source Optical Coherence Tomography
  
  Explore Healio.com Jun 11 2020 Ophthalmology
  
  PURPOSE: To evaluate the effect of intraocular lens (IOL) optic overlapping on IOL stability and to determine the relationship between the capsulorhexis and IOL movement with the three-dimensional method of swept-source optical coherence tomography (SS-OCT). METHODS: This study identified patients with age-related cataracts and divided them into two groups according to their anterior capsule and IOL optic relationship: total anterior capsule overlap (360) and partial anterior capsule overlap ( 360). Standard ...
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  Mentions: Wenzhou Medical College
5. Modeling of gonioscopic anterior chamber angle grades based on anterior segment optical coherence tomography
  
  Explore Eye and Vision Jun 8 2020
  
  Background To quantitatively assess anterior chamber angle (ACA) structure by anterior segment optical coherence tomography (AS-OCT) and develop a model to evaluate angle width as defined by gonioscopy. Methods The ACAs of each quadrant were evaluated by gonioscopy, classified by the Scheie grading system, and assigned into one of the three grades: small angle (SA), moderate angle (MA), and large angle (LA). The eyes were imaged by AS-OCT, and ACA ...
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  Mentions: Wenzhou Medical College Meixiao Shen
6. Observing the Morphology of Schlemm's Canal and Crystalline Lens in Different Age
  
  Explore Home - ClinicalTrials.gov Apr 24 2020 Ophthalmology , Clinical Trials
  
  The aim of this study is to quantify and observe the morphology of trabecular meshwork (TM), Schlemm's canal (SC), ciliary body and crystalline lens before and after cycloplegia in patients with different ages using swept-source optical coherence tomography .
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  Mentions: Wenzhou Medical College Tomey Corporation
7. Evaluating Retinal Angiomatous Proliferation With Optical Coherence Tomography Angiography
  
  Explore Healio.com Mar 31 2020 Ophthalmology
  
  BACKGROUND AND OBJECTIVE: To report the imaging features of different stages of retinal angiomatous proliferation (RAP) on optical coherence tomography angiography (OCTA). PATIENTS AND METHODS: Patients diagnosed with RAP were included in this study. All patients underwent fluorescein angiography (FA), indocyanine green angiography (ICGA), optical coherence tomography (OCT), and OCTA. The OCTA features were illustrated and compared with FA, ICGA, and OCT. OCTA was performed at baseline and after injection ...
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  Mentions: Wenzhou Medical College
8. Effect of orthokeratology on precision and agreement assessment of a new swept-source optical coherence tomography biometer
  
  Explore Eye and Vision Mar 7 2020 Ophthalmology
  
  Background To evaluate the effect of orthokeratology on precision of measurements in children using a new swept-source optical coherence tomography (SS-OCT) optical biometer (OA-2000), and agreement between its measurements and those provided by the commonly used IOLMaster based on partial coherence interferometry (PCI). Methods This study recruited fifty-one eyes of 51 normal children (816years). An operator took measurements with the two biometers. Then, a second operator took measurements with the ...
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  Mentions: Wenzhou Medical College
9. Axial length measurement and detection rates using a swept-source optical coherence tomography based biometer in the presence of a dense vitreous hemorrhage
  
  Explore LWW Online Feb 21 2020 Ophthalmology
  
  Purpose: To evaluate axial length (AL) measurements and detection rates using a swept-source optical coherence tomography (SS-OCT) biometer (OA-2000, Tomey, Japan) compared with the IOLMaster (v5.4, Carl Zeiss Meditec AG, Germany), Lenstar (v2.1, Haag-Streit, Switzerland) and ultrasound (US) measurements in eyes with vitreous hemorrhage (VH). Setting: Eye Hospital of Wenzhou Medical University, Wenzhou, China. Design: Comparative evaluation of a diagnostic test or technology. Methods: The main outcomes were ...
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  Mentions: Wenzhou Medical College Tomey Corporation Haag-Streit
10. OCTA Analysis In Children After Lensectomy
  
  Explore Home - ClinicalTrials.gov Jan 3 2020 Ophthalmology , Clinical Trials
  
  The aim of this study is to quantify and compare the foveal avascular zone (FAZ), the parafoveal and foveal vessel density of superficial (SCP) and deep capillary plexus (DCP) and retinal thickness in deprivation amblyopic eyes, fellow non-amblyopic eyes, and age-matched normal eyes, using optical coherence tomography angiography (OCTA). The FAZ, parafoveal and foveal SCP and DCP, and retinal thickness were measured in normal controls and at least 3 months ...
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  Mentions: Wenzhou Medical College
11. Characteristics of Posterior Precortical Vitreous Pockets and Cloquet's Canal in Patients with Myopia by Swept-Source Optical Coherence Tomography
  
  Explore IOVS Journal Nov 26 2019 Ophthalmology
  
  Purpose : To describe the morphological features of posterior precortical vitreous pockets (PPVP) and Cloquet's Canal in patients with myopia using swept-source optical coherence tomography (SS OCT). Methods : A total of 96 eyes of 51 volunteers (range, 518 years) were enrolled in this study, and all individuals underwent OCT (Optovue Inc., Fremont, CA, USA) examinations. From the collected PPVPs images, the widths and heights of the PPVPs were measured, and ...
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  Mentions: Optovue Wenzhou Medical College
12. Automatic three-dimensional segmentation method for OCT and doppler OCT angiography
  
  Explore uspto.gov Nov 5 2019 Patents
  
  A three-dimensional (three dimensional) segmentation method with intensity-based Doppler variance (IBDV) based on swept-source OCT. The automatic three dimensional segmentation method is used to obtain seven surfaces of intra-retinal layers. The microvascular network of the retina, which is acquired by the IBDV method, can be divided into six layers. The microvascular network of the six individual layers are visualized, and the morphology and contrast images can be improved by using ...
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  Mentions: Zhongping Chen UC Irvine Wenzhou Medical College
13. Assessment of corneal viscoelasticity using elastic wave optical coherence elastography
  
  Explore Wiley Online Library Oct 24 2019 Ophthalmology
  
  The corneal viscoelasticity have great clinical significance, such as the early diagnosis of keratoconus. In this work, an analysis method which utilized the elastic wave velocity, frequency and energy attenuation to assess the corneal viscoelasticity is presented. Using phase‐resolved optical coherence tomography, the spatial‐temporal displacement map is derived. The phase velocity dispersion curve and center frequency are obtained by transforming the displacement map into the wavenumber‐frequency domain ...
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  Mentions: Wenzhou Medical College Meixiao Shen
14. In vivo evaluation of corneal biomechanical properties by optical coherence elastography at different cross-linking irradiances
  
  Explore SPIE Digital Library Oct 15 2019 Ophthalmology
  
  Corneal collagen cross-linking (CXL) strengthens the biomechanical properties of damaged corneas. Quantifying the changes of stiffness due to different CXL protocols is difficult, especially in vivo . A noninvasive elastic wave-based optical coherence elastography system was developed to construct in vivo corneal elasticity maps by excitation of air puff. Biomechanical differences were compared for rabbit corneas given three different CXL protocols while keeping the total energy delivered constant. The Youngs modulus ...
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  Mentions: Wenzhou Medical College Meixiao Shen
15. Deep learning based early stage diabetic retinopathy detection using optical coherence tomography
  
  Explore ScienceDirect Sep 3 2019 Ophthalmology
  
  Diabetic retinopathy (DR) is one of the leading causes of preventable blindness globally. Performing retinal examinations on all diabetic patients is an unmet need, and detection at an early stage can provide better control of the disease. The objective of this study is to provide an optical coherence tomography (OCT) image based diagnostic technology for automated early DR diagnosis, including at both grades 0 and 1. This work can help ...
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  Mentions: Imperial College London Wenzhou Medical College Meixiao Shen
16. Relationship of Posterior Capsular Opacification and Capsular Bend Type Investigation Based on Swept-source Optical Coherence Tomography
  
  Explore Taylor & Francis Online Aug 3 2019 Ophthalmology
  
  Purpose : To investigate the relationship between capsular bend type and posterior capsule opacification (PCO) at a three-dimensional (3D) level using high-speed swept-source optical coherence tomography (SS-OCT). Methods : This was a retrospective study. A total of 99 eyes that underwent standard cataract surgery with phacoemulsification 2 years ago were analyzed. Standard SS-OCT radial scanning was performed in all eyes and the obtained photos were used for morphological observations of the capsular ...
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  Mentions: Wenzhou Medical College
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