Articles that mention Jianhua Wang -Optical Coherence Tomography News

Jianhua Wang

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1. Mentioned In 77 Articles
2. The effect of software versions on the measurement of retinal vascular densities using optical coherence tomography angiography
  
  Explore Taylor & Francis Online Aug 10 2020 Ophthalmology
  
  Background The goal of the study was to determine the effect of different software versions on the measurement of retinal vessel densities using optical coherence tomography angiography (OCTA) in normal subjects. Methods Thirty-two eyes of eighteen healthy subjects were imaged using two OCTA devices: the Optovue RTVue and the Zeiss Cirrus. The macular 3 3 mm scan protocol was used. The images acquired using the Optovue OCTA device were exported ...
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  Mentions: Giovanni Gregori Optovue Jianhua Wang
3. Role of optical coherence tomography angiography in the characterization of vascular network patterns of ocular surface squamous neoplasia
  
  Explore ScienceDirect Apr 30 2020 Ophthalmology
  
  Purpose To visualize and quantify vascular networks in individuals with ocular surface squamous neoplasia (OSSN) through optical coherence tomography angiography (OCTA). Method Cross-sectional study of OSSN patients. Vascular networks were measured by OCTA in the epithelium and sub-epithelial space in the tumors, adjacent tissue, and in the contralateral eye. Vessel area density (VAD, percent of blood vessels within 2.14 mm 2 ), was calculated for each location. Total tumor density ...
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  Mentions: Jianhua Wang University of Miami
4. Quantitative analysis of conjunctival microvasculature imaged using optical coherence tomography angiography
  
  Explore Eye and Vision Feb 5 2019
  
  Background The goal was to quantitatively analyze the bulbar conjunctival microvascular density using optical coherence tomography angiography (OCTA) and compare it to the vessel density using functional slit-lamp biomicroscopy (FSLB). Methods Temporal bulbar conjunctiva of 20 eyes (10 healthy subjects) was imaged using both OCTA and FSLB. Image processing was performed including equalization, de-noising, thresholding, and skeletonization. The vessel density was measured by fractal analysis (box counting, Dbox) and pixel ...
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  Mentions: Jianhua Wang University of Miami
5. Altered Macular Microvasculature in Mild Cognitive Impairment and Alzheimer Disease
  
  Explore LWW Online Aug 17 2018 Neurology , Ophthalmology
  
  Background: The goal of the present study was to analyze the macular microvacular network in mild cognitive impirment (MCI) and Alzheimer disease (AD). Methods: Twelve patients with AD and 19 patients with MCI were recruited together with 21 cognitively normal controls with a similar range of ages. Optical coherence tomography angiography was used to image the retinal microvascular network at the macular region, including retinal vascular network (RVN), superficial vascular ...
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  Mentions: Giovanni Gregori Carl Zeiss Meditec Jianhua Wang
6. Long scan depth optical coherence tomography on imaging accommodation: impact of enhanced axial resolution, signal-to-noise ratio and speed
  
  Explore Eye and Vision Jul 14 2018 Ophthalmology
  
  Background Spectral domain optical coherence tomography (SD-OCT) was a useful tool to study accommodation in human eye, but the maximum image depth is limited due to the decreased signal-to-noise ratio (SNR). In this study, improving optical resolutions, speeds and the SNR were achieved by custom built SD-OCT, and the evaluation of the impact of the improvement during accommodation was investigated. Methods Three systems with different spectrometer designs, including two Charge ...
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  Mentions: Jianhua Wang University of Miami Meixiao Shen
7. Altered birefringence of peripapillary retinal nerve fiber layer in multiple sclerosis measured by polarization sensitive optical coherence tomography
  
  Explore Eye and Vision Jun 26 2018 Ophthalmology
  
  Background The retina has been used to study the pathophysiology of multiple sclerosis (MS). Peripapillary retinal nerve fiber layer (pRNFL) thinning has been suggested as an ocular biomarker of neurodegeneration in MS. The goal of this project was to determine the birefringence of the pRNFL by measuring the fiber birefringence using polarization sensitive optical coherence tomography (PS-OCT). Methods Sixty-six MS patients without history of optic neuritis (age: 39.911.0 ...
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  Mentions: Jianhua Wang University of Miami
8. Optical coherence tomography for ocular surface and corneal diseases: a review
  
  Explore Eye and Vision Jun 16 2018 Ophthalmology
  
  The advent of optical coherence tomography (OCT) imaging has changed the way ophthalmologists image the ocular surface and anterior segment of the eye. Its ability to obtain dynamic, high and ultra-high resolution, cross-sectional images of the ocular surface and anterior segment in a noninvasive and rapid manner allows for ease of use. In this review, we focus on the use of anterior segment OCT, which provides an optical biopsy or ...
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  Mentions: Jianhua Wang University of Miami
9. Axial elongation measured by long scan depth optical coherence tomography during pilocarpine-induced accommodation in intraocular lens-implanted eyes
  
  Explore Nature Publishing Group Feb 3 2018 Ophthalmology
  
  We used an ultra-long scan depth optical coherence tomography (UL-OCT) system to investigate changes in axial biometry of pseudophakic eyes during pilocarpine- induced accommodation. The right eyes from 25 healthy subjects (age range 49 to 84 years) with an intraocular lens (IOL) were imaged twice in the non-accommodative and the accommodative states. A custom-built UL-OCT instrument imaged the whole eye. Then accommodation was induced by two drops of 0.5 ...
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  Mentions: Jianhua Wang Wenzhou Medical College Meixiao Shen
10. Characterization of Soft Contact Lens Fitting Using Ultra-Long Scan Depth Optical Coherence Tomography
  
  Explore Hindawi Publishing Corporation Jun 7 2017 Ophthalmology
  
  Objectives . To evaluate the centration and movement of soft contact lenses and to verify the repeatability of two repeated measurements of the lens centration and movement using ultra-long scan depth optical coherence tomography (UL-OCT). Methods . A 1-day Acuvue Define lens was tested on both eyes of 10 subjects (5 males and 5 females; mean age, 31.6 years). The centration and blink-induced movement of the contact lens were measured using ...
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  Mentions: Jianhua Wang Wenzhou Medical College University of Miami
11. Role of high resolution optical coherence tomography in diagnosing ocular surface squamous neoplasia with coexisting ocular surface diseases
  
  Explore ScienceDirect Mar 28 2017 Ophthalmology
  
  Purpose Coexistence of an ocular surface disease can mask the typical features of ocular surface squamous neoplasia (OSSN). The purpose of this study was to evaluate high resolution optical coherence tomography (HR-OCT) as an adjunct in the detection and differentiation of OSSN within coexisting ocular surface pathologies. Methods Retrospective study of 16 patients with ocular surface disease and lesions suspicious for OSSN that were evaluated with HR-OCT. HR-OCT images of ...
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  Mentions: Jianhua Wang University of Miami
12. The measurement repeatability using different partition methods of intraretinal tomographic thickness maps in healthy human subjects
  
  Explore Medical Journals Publisher Nov 30 2016 Ophthalmology
  
  Purpose: To determine the repeatability and profiles with different partition methods in intraretinal thickness layers in healthy human subjects, using optical coherence tomography (OCT). Methods: A custom-built ultrahigh-resolution OCT was used to acquire three-dimensional volume of the macula in 20 healthy subjects. The dataset was acquired twice using the macular cube 512128 protocol in an area of 66 mm 2 centered on the fovea. Commercially available segmentation software (Orion) was ...
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  Mentions: Jianhua Wang Wenzhou Medical College University of Miami
13. In vivo quantification of cochlin in glaucomatous DBA/2J mice using optical coherence tomography
  
  Explore Nature Publishing Group Jun 8 2015 Ophthalmology
  
  The expression of cochlin in the trabecular meshwork (TM) precedes the clinical glaucoma symptoms in DBA/2J mice. The ability to quantify cochlin in the local tissue (TM) offers potential diagnostic and prognostic values. We present two (spectroscopic and magnetomotive) optical coherence tomography (OCT) approaches for in vivo cochlin quantification in a periodic manner. The cochlin-antibody OCT signal remains stable for up to 24hours as seen at 3.5hours after ...
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  Mentions: Giovanni Gregori Jianhua Wang University of Miami
14. Ultra high resolution optical coherence tomography in Boston type I keratoprosthesis
  
  Explore jovr.org May 28 2015 Ophthalmology
  
  PURPOSE: To evaluate the anterior keratoprosthesis-cornea interface in eyes with Boston type I keratoprosthesis (Kpro). METHODS: In a prospective non-interventional study, patients with Boston type I Kpro underwent ultra-high resolution optical coherence tomography (UHR-OCT) evaluation. The images were used to measure and describe characteristics of the anterior keratoprosthesis-cornea interface, epithelial interaction at the keratoprosthesis edge and the keratoprosthesis-cornea interface gap. RESULTS: Ten patients including 4 male and 6 female subjects ...
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  Mentions: Jianhua Wang University of Miami
15. Automatic Biometry of the Anterior Segment During Accommodation Imaged by Optical Coherence Tomography
  
  Explore LWW Online Jun 6 2014 Ophthalmology
  
  Objective: To test accuracy and repeatability of a software algorithm that performs automatic biometry of the anterior segment of the human eye imaged with long scan depth optical coherence tomography (OCT). Methods: The ocular anterior segment imaging was performed with custom-built long scan depth OCT. An automatic software algorithm including boundary segmentation, image registration, and optical correction was developed for fast and reliable biometric measurements based on the OCT images ...
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  Mentions: Jianhua Wang University of Miami Meixiao Shen
16. Vertical and Horizontal Corneal Epithelial Thickness Profile Using Ultra-High Resolution and Long Scan Depth Optical Coherence Tomography
  
  Explore PLoS ONE May 20 2014 Ophthalmology
  
  Purpose To determine the vertical and horizontal thickness profiles of the corneal epithelium in vivo using ultra-long scan depth and ultra-high resolution spectral domain optical coherence tomography (SD-OCT). Methods A SD-OCT was developed with an axial resolution of ~3.3 m in tissue and an extended scan depth. Forty-two eyes of 21 subjects were imaged twice. The entire horizontal and vertical corneal epithelial thickness profiles were evaluated. The coefficient of ...
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  Mentions: Jianhua Wang University of Miami Aizhu Tao
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