1. Articles from Yi Chen

    1-3 of 3
    1. Branch Retinal Vein Occlusion Secondary To A Retinal Arteriolar Macroaneurysm: A Novel Mechanism Supported By Multimodal Imaging

      Branch Retinal Vein Occlusion Secondary To A Retinal Arteriolar Macroaneurysm: A Novel Mechanism Supported By Multimodal Imaging

      Background/Purpose: To report a case of a branch retinal vein occlusion secondary to a retinal arteriolar macroaneurysm (RAM). Methods: Retrospective case report describing examination findings, treatment outcome and unique multimodal imaging features demonstrated on fluorescein angiography, optical coherence tomography, optical coherence tomography angiography and adaptive optics photography of the retinal vessels and RAM. Results: A 61-year-old man presented with 20/200 vision in the right eye because of a branch retinal vein occlusion secondary to a RAM. After sector panretinal photocoagulation and a course of 24 intravitreal antivascular endothelial growth factor injections over 4 years, visual acuity improved to ...

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    2. Impact of retinal pigment epithelium pathology on spectral-domain optical coherence tomography-derived macular thickness and volume metrics and their intersession repeatability

      Impact of retinal pigment epithelium pathology on spectral-domain optical coherence tomography-derived macular thickness and volume metrics and their intersession repeatability

      Background To determine the impact of retinal pigment epithelium (RPE) pathology on intersession repeatability of retinal thickness and volume metrics derived from Spectralis spectral-domain optical coherence tomography (SD-OCT). Design Prospective cross-sectional single centre study. Participants 56 eyes of 56 subjects were divided into 3 groups: (A) normal RPE band (25 eyes), (B) RPE elevation: macular soft drusen (13 eyes) and (C) RPE attenuation: geographic atrophy or inherited retinal diseases (18 eyes). Methods Each subject underwent three consecutive follow-up macular raster scans (61 B-scans at 119 micron separation) at 1-month intervals. Main outcome measures Retinal thicknesses and volumes for each zone ...

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    3. Advanced Technologies for Touchless Fingerprint Recognition

      A fingerprint capture consists of touching or rolling a finger onto a rigid sensing surface. During this act, the elastic skin of the finger deforms. The quantity and direction of the pressure applied by the user, the skin conditions, and the projection of an irregular 3D object (the finger) onto a 2D flat plane introduce distortions, noise, and inconsistencies on the captured fingerprint image. Due to these negative effects, the representation of the same fingerprint changes every time the finger is placed on the sensor platen, increasing the complexity of the fingerprint matching and representing a negative influence on the ...
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    1-3 of 3
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    1. (1 articles) University of Western Australia
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    Impact of retinal pigment epithelium pathology on spectral-domain optical coherence tomography-derived macular thickness and volume metrics and their intersession repeatability Branch Retinal Vein Occlusion Secondary To A Retinal Arteriolar Macroaneurysm: A Novel Mechanism Supported By Multimodal Imaging Postdoctoral Associate Position at Duke Vision and Image Processing Laborator Anterior segment optical coherence tomography angiography Refining percutaneous coronary intervention: intracoronary imaging, haemodynamics, P2Y12 antagonists, and public outcomes reporting Optical Coherence Tomography/Fluorescence Imaging: Fiber assembly enables efficient multimodal endoscopy Optical Fabrication: Glassblowing technique creates arrays of axicon lenses University of Alabama Receives NIH Grant  for Clinical and Translational Core. University of Alabama Receives NIH Grant for Cell Model Evaluation Core. Changes in Posterior Segment Optical Coherence Tomography after Intravitreal Triamcinolone Acetonide Injection Spectral calibration for spectral domain optical coherence tomography based on B-scan Doppler shift with tissue images Vascular Changes in Intermediate Age-Related Macular Degeneration Quantified Using Optical Coherence Tomography Angiography