1. Articles from Yanjun Hua

    1-6 of 6
    1. Choroidal Variations in Diabetic Macular Edema: Fluorescein Angiography and Optical Coherence Tomography

      Choroidal Variations in Diabetic Macular Edema: Fluorescein Angiography and Optical Coherence Tomography

      Purposes : To (i) evaluate variations in choroidal thickness (CT) and choroidal volume (CV) in diabetic macular edema (DME), as demonstrated by fluorescein angiography (FA) and enhanced depth-imaging (EDI) optical coherence tomography (OCT) (EDI-OCT) and (ii) correlate these variations with visual acuity. Methods : This study was a retrospective observational case series of patients with diabetic retinopathy (DR) and DME. The study groups comprised 77 DR patients ( n = 87), all of whom underwent color fundus photography, FA, and OCT on the same day. The control group comprised 25 age-matched healthy individuals ( n = 50 eyes). CT was measured by manual segmentation (EDI-OCT built-in ...

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    2. Corneal Power Measurement Obtained by Fourier-Domain Optical Coherence Tomography: Repeatability, Reproducibility, and Comparison With Scheimpflug and Automated Keratometry Measurements

      Corneal Power Measurement Obtained by Fourier-Domain Optical Coherence Tomography: Repeatability, Reproducibility, and Comparison With Scheimpflug and Automated Keratometry Measurements

      Purpose: To assess the repeatability and reproducibility of corneal power values obtained by a Fourier-domain optical coherence tomography (FD-OCT) system (RTVue) and to compare them with the values obtained by a Scheimpflug camera system (Pentacam HR) and by automated keratometry (IOL Master). Methods: Thirty-two eyes from 32 healthy subjects were included in this prospective study. Two experienced observers measured each eye 3 consecutive times with the Pentacam, IOLMaster, and RTVue centered on either the pupil or corneal vertex. The conventional keratometry equivalent (CKE) and anterior (Ka), posterior (Kp), and net (Kn) corneal power values were determined. Results: The corneal power ...

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    3. Keratometric Index Obtained by Fourier-Domain Optical Coherence Tomography

      Keratometric Index Obtained by Fourier-Domain Optical Coherence Tomography

      Purpose To determine the keratometric indices calculated based on parameters obtained by Fourier-domain optical coherence tomography (FD-OCT). Methods The ratio of anterior corneal curvature to posterior corneal curvature (Ratio) and keratometric index (N) were calculated within central 3 mm zone with the RTVue FD-OCT (RTVue, Optovue, Inc.) in 186 untreated eyes, 60 post-LASIK/PRK eyes, and 39 keratoconus eyes. The total corneal powers were calculated using different keratometric indices: K cal based on the mean calculated keratometric index, K 1.3315 calculated by the keratometric index of 1.3315, and K 1.3375 calculated by the keratometric index of 1 ...

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      Mentions: Optovue
    4. Anterior chamber depth measurements using Scheimpflug imaging and optical coherence tomography: Repeatability, reproducibility, and agreement

      Anterior chamber depth measurements using Scheimpflug imaging and optical coherence tomography: Repeatability, reproducibility, and agreement

      Purpose To determine the repeatability, reproducibility, and agreement of anterior chamber depth (ACD) measurements obtained with 3 Scheimpflug cameras and an anterior segment optical coherence tomography (AS-OCT) device. Setting Eye Hospital of Wenzhou Medical University, Zhejiang, China. Design Observational cross-sectional study. Methods Two observers took 3 consecutive measurements in healthy right eyes using each device to assess intraoperator repeatability. The mean values obtained at different sessions by the first operator were used to determine the intersession reproducibility. Three consecutive measurements obtained by the first operator at the first session were averaged and used to assess agreement. Results The ACD measurements ...

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    5. Central and midperipheral corneal thickness measured with scheimpflug imaging and optical coherence tomography

      Central and midperipheral corneal thickness measured with scheimpflug imaging and optical coherence tomography

      Purpose To compare corneal thickness measurements using Pentacam (Oculus, Germany), Sirius (CSO, Italy), Galilei (Ziemer, Switzerland), and RTVue-100 OCT (Optovue Inc., USA). Methods Sixty-six eyes of 66 healthy volunteers were enrolled. Three consecutive measurements were performed with each device. The mean value of the three measurements was used for subsequent analysis. Central corneal thickness (CCT), thinnest corneal thickness (TCT), and midperipheral corneal thickness (MPCT; measured at superior, inferior, nasal, and temporal locations with a distance of 1 mm (CT 2mm ) or 2.5 mm (CT 5mm ) from the corneal apex) were analyzed. Differences and agreement between measurements were assessed using ...

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    6. A Comparison between Scheimpflug Imaging and Optical Coherence Tomography in Measuring Corneal Thickness

      A Comparison between Scheimpflug Imaging and Optical Coherence Tomography in Measuring Corneal Thickness

      Purpose To assess the repeatability and reproducibility of 3 rotating Scheimpflug cameras, the Pentacam (Oculus, Wetzlar, Germany), Sirius (Costruzione Strumenti Oftalmici, Florence, Italy), and Galilei (Ziemer, Biel, Switzerland), and 1 Fourier-domain optical coherence tomography (FD-OCT) system, the RTvue-100 OCT (Optovue Inc., Fremont, CA), in measuring corneal thickness. Design Evaluation of diagnostic test. Participants Sixty-six right eyes of 66 healthy volunteers, whose mean age ± standard deviation (SD) was 35.39±10.06 years (range, 18–55 years). Methods Corneal thickness measurements obtained by each system included central corneal thickness (CCT), thinnest corneal thickness (TCT), and midperipheral corneal thickness (MPCT), measured at ...

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    1-6 of 6
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    1. (4 articles) Wenzhou Medical College
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    A Comparison between Scheimpflug Imaging and Optical Coherence Tomography in Measuring Corneal Thickness Central and midperipheral corneal thickness measured with scheimpflug imaging and optical coherence tomography Anterior chamber depth measurements using Scheimpflug imaging and optical coherence tomography: Repeatability, reproducibility, and agreement Keratometric Index Obtained by Fourier-Domain Optical Coherence Tomography Corneal Power Measurement Obtained by Fourier-Domain Optical Coherence Tomography: Repeatability, Reproducibility, and Comparison With Scheimpflug and Automated Keratometry Measurements Choroidal Variations in Diabetic Macular Edema: Fluorescein Angiography and Optical Coherence Tomography Combining Deep Learning With Optical Coherence Tomography Imaging to Determine Scalp Hair and Follicle Counts Efficacy and Safety of Laser‐Assisted Combination Chemotherapy: An Explorative Imaging‐Guided Treatment With 5‐Fluorouracil and Cisplatin for Basal Cell Carcinoma A NOVEL FINDING OF HYPERREFLECTIVE MATERIAL IN THE SILICONE-RETINA INTERFACE: An Optical Coherence Tomographic and Histopathological Study SWEPT SOURCE OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY, FLUORESCEIN ANGIOGRAPHY, AND INDOCYANINE GREEN ANGIOGRAPHY COMPARISONS REVISITED: Using a Novel Deep-Learning-Assisted Approach for Image Registration AUTOMATED RETINAL LAYER SEGMENTATION AND THEIR THICKNESS PROFILES IN HEALTHY SUBJECTS: A Comparison of 55° Wide-field and Conventional 30° Spectral Domain-Optical Coherence Tomography RELATIONSHIP BETWEEN PREOPERATIVE FOVEAL MICROSTRUCTURE AND VISUAL ACUITY IN MACULA-OFF RHEGMATOGENOUS RETINAL DETACHMENT: Imaging Analysis by Swept Source Optical Coherence Tomography