1. Articles from JINGJING HUANG

    1-10 of 10
    1. Segmentation Errors in the Measurement of Volumetric Parameters by Swept-Source Anterior Segment Optical Coherence Tomography

      Segmentation Errors in the Measurement of Volumetric Parameters by Swept-Source Anterior Segment Optical Coherence Tomography

      Purpose: To investigate the error rate of segmentation in the automatic measurement of anterior chamber volume (ACV) and iris volume (IV) by swept-source anterior segment optical coherence tomography (SS-ASOCT) in narrow-angle and wide-angle eyes. Methods: In this study, fifty eyes from 25 narrow-angle subjects and fifty eyes from 25 wide-angle subjects were enrolled. SS-ASOCT examinations were performed and each SS-ASOCT scan was reviewed, and segmentation errors in the automatic measurement of ACV and IV were classified and manually corrected. Error rates were compared between the narrow-angle and the wide-angle groups, and ACV and IV before and after manual correction were ...

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    2. Analysis of Iris volume using swept-source optical coherence tomography in patients with type 2 diabetes mellitus

      Analysis of Iris volume using swept-source optical coherence tomography in patients with type 2 diabetes mellitus

      Purpose: To evaluate iris volume before and after pupil dilation using swept-source anterior segment optical coherence tomography (SS-ASOCT) and investigate the associated factors of iris volume and iris volume change after pupil dilation in patients with type 2 diabetes mellitus (T2DM). Methods: A cross-sectional study was conducted in Zhongshan Ophthalmic Center among T2DM registered patients in the community of Guangzhou, China. Anterior chamber volume (ACV), iris volume, anterior chamber depth (ACD), angle opening distance at 500 μm (AOD 500) and pupil diameter were estimated using SS-ASOCT (CASIA; Tomey, Nagoya, Japan). Venous blood was taken for the measurement of glycosylated haemoglobin ...

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    3. Reduced Retinal Vessel Density in Obstructive Sleep Apnea Syndrome Patients: An Optical Coherence Tomography Angiography Study

      Reduced Retinal Vessel Density in Obstructive Sleep Apnea Syndrome Patients: An Optical Coherence Tomography Angiography Study

      Purpose : To examine the retinal vasculature in patients with obstructive sleep apnea–hypopnea syndrome (OSAS) and to determine the correlation between retinal vascularity and the severity of OSAS. Design : Prospective, cross-sectional study. Methods : Sixty-nine consecutive subjects who underwent polysomnography were enrolled. Patients were divided into three groups according to the severity of OSAS, which was defined using the apnea-hypopnea index (AHI) as normal-to-mild (AHI <15), moderate (≥15 to <30), or severe (≥30). The vessel densities, and macular and retinal nerve fiber layer thicknesses were compared among the three groups. The correlations between clinical variables (age, heart rate, body mass index ...

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      Mentions: Fudan University
    4. Image Quality Affects Macular and Retinal Nerve Fiber Layer Thickness Measurements on Fourier-Domain Optical Coherence Tomography

      Image Quality Affects Macular and Retinal Nerve Fiber Layer Thickness Measurements on Fourier-Domain Optical Coherence Tomography
      BACKGROUND AND OBJECTIVE To investigate whether image quality is an important determinant of retinal nerve fiber layer (RNFL) and macular thickness measurements on Fourier-domain optical coherence tomography (OCT). PATIENTS AND METHODS Seventy-five and 56 normal subjects were recruited in RNFL and macular thickness arms of the study, respectively. Each participant was scanned three times using both the 3D OCT-1000 (version 3.01, Mark II; Topcon Corporation, Tokyo, Japan) and the Cirrus OCT (version 3.0, Model 4000; Carl Zeiss Meditec, Inc., Dublin, CA). The scans for each participant were arranged in order of increasing image qualities, which were correlated with ...
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    5. Macular and Retinal Nerve Fiber Layer Thickness Measurements in Normal Eyes With the Stratus OCT, the Cirrus HD-OCT, and the Topcon 3D OCT-1000

      Macular and Retinal Nerve Fiber Layer Thickness Measurements in Normal Eyes With the Stratus OCT, the Cirrus HD-OCT, and the Topcon 3D OCT-1000
      Purpose: To compare retinal nerve fiber layer (RNFL) and macular thickness measurements using time-domain optical coherence tomography (TD OCT) and 2 Fourier-domain OCTs (FD OCT). Methods: Sixty eyes of 60 normal participants underwent eye examination followed by OCT evaluation with the time-domain Stratus OCT (Carl Zeiss Meditec, Inc. Dublin, CA) and 2 FD OCTs-the Cirrus HD-OCT (Carl Zeiss Meditec, Inc. Dublin, CA) and the 3D OCT-1000 (Topcon Corporation, Tokyo, Japan). Each patient was scanned 3 times on each machine by the same physician examiner. RNFL and macular thickness measurements were compared across the 3 devices using repeated measures analysis of ...
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    6. Comparison of full-thickness traumatic macular holes and idiopathic macular holes by optical coherence tomography

      Comparison of full-thickness traumatic macular holes and idiopathic macular holes by optical coherence tomography
      Background The optical coherence tomography (OCT) and clinical characteristics of traumatic macular holes (TMHs) can be compared to those of idiopathic macular holes (IMHs) to gain insights into the pathogenesis of both. Methods The demographic data and visual acuity of 73 consecutive patients with unilateral, full-thickness TMHs and 182 consecutive patients with idiopathic IMHs were recorded. All patients with TMH and 60 patients with IMH underwent OCT scanning and quantitative measurements. The apical and basal diameters and marginal retinal thicknesses were recorded for each hole. The hole areas and eccentricities were calculated. These parameters were compared between the two types ...
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    7. Macular Thickness Measurements in Normal Eyes With Time-Domain and Fourier-Domain Optical Coherence Tomography

      Purpose: To compare macular thickness measurements using time-domain optical coherence tomography (OCT) and Fourier-domain OCT. Methods: Thirty-two eyes from 32 normal patients underwent complete ophthalmic evaluation. Macular scanning using the StratusOCT and the RTVue-100 OCT were performed for a total of three times each on the same visit. The average retinal thicknesses of the nine macular sectors as defined by the Early Treatment Diabetic Retinopathy Study, along with the foveal center point and macular volume, were recorded. The SD, the coefficient of variation, and the intraclass correlation coefficient were calculated for each parameter studied. Comparisons were made between the two ...
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    8. Signal Strength is an Important Determinant of Accuracy of Nerve Fiber Layer Thickness Measurement by Optical Coherence Tomography.

      Purpose: To investigate the effect of signal strength on the measurement of the retinal nerve fiber layer (RNFL) using optical coherence tomography (OCT). Methods: Eyes with known or suspected glaucoma or nonglaucomatous optic atrophy were scanned twice within the same visit using Stratus OCT's Fast Nerve Fiber Layer Thickness protocol. Only those eyes with 2 high-quality scans (signal strengths of at least 5 and different from each other, no error messages, and no obvious segmentation errors) were included in the study. The RNFL thickness measurements from the initial and the repeat scans were compared and then correlated with the ...
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    9. CLASSIFICATION OF FULL-THICKNESS TRAUMATIC MACULAR HOLES BY OPTICAL COHERENCE TOMOGRAPHY.

      Purpose: To describe morphologic features of traumatic macular holes on optical coherence tomography and to correlate them with clinical findings. Methods: Seventy-three consecutive patients diagnosed with full-thickness traumatic macular holes involving the fovea underwent complete ophthalmic evaluation followed by horizontal and vertical li...
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    1-10 of 10
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    Comparison of full-thickness traumatic macular holes and idiopathic macular holes by optical coherence tomography Macular and Retinal Nerve Fiber Layer Thickness Measurements in Normal Eyes With the Stratus OCT, the Cirrus HD-OCT, and the Topcon 3D OCT-1000 Image Quality Affects Macular and Retinal Nerve Fiber Layer Thickness Measurements on Fourier-Domain Optical Coherence Tomography Reduced Retinal Vessel Density in Obstructive Sleep Apnea Syndrome Patients: An Optical Coherence Tomography Angiography Study Analysis of Iris volume using swept-source optical coherence tomography in patients with type 2 diabetes mellitus Segmentation Errors in the Measurement of Volumetric Parameters by Swept-Source Anterior Segment Optical Coherence Tomography Distortion and Instability Compensation with Deep Learning for Rotational Scanning Endoscopic Optical Coherence Tomography Laser-induced choroidal neovascularization detected on optical coherence tomography angiography in patients with diabetic retinopathy Optical coherence tomography- angiography: A new diagnostic and follow-up tool for glaucoma Corneal Irregular Astigmatism And Visual Function On Anterior Segment Optical Coherence Tomography In TGFBI Corneal Dystrophy Early-term Optical Coherence Tomography Angiographic Findings in Pediatric Patients Infected with COVID-19 Integrated deep learning framework for accelerated optical coherence tomography angiography