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Classification of Diabetic Macular Edema and Its Stages Using Color Fundus Image
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作者 Muhammad Zubair Shoab A.Khan Ubaid Ullah Yasin 《Journal of Electronic Science and Technology》 CAS 2014年第2期187-190,共4页
Diabetic macular edema (DME) is a retinal thickening involving the center of the macula. It is one of the serious eye diseases which affects the central vision and can lead to partial or even complete visual loss. T... Diabetic macular edema (DME) is a retinal thickening involving the center of the macula. It is one of the serious eye diseases which affects the central vision and can lead to partial or even complete visual loss. The only cure is timely diagnosis, prevention, and treatment of the disease. This paper presents an automated system for the diagnosis and classification of DME using color fundus image. In the proposed technique, first the optic disc is removed by applying some preprocessing steps. The preprocessed image is then passed through a classifier for segmentation of the image to detect exudates. The classifier uses dynamic thresholding technique by using some input parameters of the image. The stage classification is done on the basis of anearly treatment diabetic retinopathy study (ETDRS) given criteria to assess the severity of disease. The proposed technique gives a sensitivity, specificity, and accuracy of 98.27%, 96.58%, and 96.54%, respectively on publically available database. 展开更多
关键词 disk diameter edema FOVEA optic disk hard exudates MACULA RETINA
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眼胶质淋巴系统及相关眼病研究进展
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作者 祝光宇 程雨欣 路雪婧 《中国全科医学》 CAS 北大核心 2023年第26期3330-3334,共5页
最近发现的眼胶质淋巴系统更新了临床对眼内循环的认知,其是一个由神经胶质细胞终足上水通道蛋白4(AQP4)驱动并依赖视网膜动、静脉周围间隙的房水-组织液交换系统,最终起到将β淀粉样蛋白等神经毒性物质排出眼外的作用。本文综述了眼胶... 最近发现的眼胶质淋巴系统更新了临床对眼内循环的认知,其是一个由神经胶质细胞终足上水通道蛋白4(AQP4)驱动并依赖视网膜动、静脉周围间隙的房水-组织液交换系统,最终起到将β淀粉样蛋白等神经毒性物质排出眼外的作用。本文综述了眼胶质淋巴系统的组成和功能,描述了生理状态下该系统具体的循环路径及其在青光眼、视盘水肿、Terson综合征(TS)等疾病过程中的障碍机制,并提出未来可确定眼胶质淋巴系统具体调控环节,针对具体环节改善该系统的功能,如利用中药多靶点、多途径的优势促进眼内代谢废物的清除,这将有机会为青光眼等诸多眼病和一些中枢神经系统疾病的治疗带来希望。 展开更多
关键词 神经胶细胞类淋巴系统 眼胶质淋巴系统 青光眼 视盘水肿 TERSON综合征 综述
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