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系統識別號 U0002-1108201613132300
中文論文名稱 隅角開放型青光眼視神經盤不同杯盤比之影響壓力分布探討
英文論文名稱 Study of Open-Angle Glaucoma and the influence of Pressure on the Optic Disc of different cup distribution Discussion
校院名稱 淡江大學
系所名稱(中) 機械與機電工程學系碩士班
系所名稱(英) Department of Mechanical and Electro-Mechanical Engineering
學年度 104
學期 2
出版年 105
研究生中文姓名 王荻揚
研究生英文姓名 Di-Yang Wang
學號 604370113
學位類別 碩士
語文別 中文
第二語文別 英文
口試日期 2016-06-14
論文頁數 86頁
口試委員 指導教授-李宗翰
委員-史建中
委員-黃曼青
中文關鍵字 隅角開放型青光眼  凹陷  杯盤比  眼壓  視神經盤 
英文關鍵字 open-angle glaucoma  depression  Cup-disc ratio  intraocular pressure  optic disc 
學科別分類 學科別應用科學機械工程
中文摘要 本研究針對隅角開放型青光眼的生成與發病機制建立出完整的數值模型以及進行模擬力學分析探討。隅角開放型青光眼是因為小樑網的病變導致眼睛內房水排出受阻,使眼球前房前端眼壓上升影響到在後房進而導致壓力堆積,後房壓力經由傳遞壓迫到視神經造成視野上的缺陷與模糊。
本研究使用了兩套軟體,3D繪圖軟體PROE與有限元素法分析軟體ANSYS,來進行模型的建立與隅角開放型青光眼相關模擬,此模擬分析可以了解到青光眼內部的壓力分佈情況以及不同杯盤比時應力的聚集之處。
本研究針對了隅角開放型青光眼不同的杯盤比做應力分佈的探討,針對杯盤比程度0.3-0.7做每個不同模型的研究,在相同條件下進行分析模擬,發現凹陷從0.3-0.7為一種集中靠近視神經盤趨勢,並研究探討每個不同凹陷應力集中之處也不一樣,也針對不同集中之處的不同數值大小做分析探討。
本研究內容對於隅角開放型青光眼的模擬分析結果,可以令青光眼之患者更了解自己相關發病情況,因為杯盤比大小是造成青光眼發病的主要原因之一,能提供未來醫學上一個資訊與具有參考價值的模擬數據。
英文摘要 This study explores open-angle glaucoma and its Pathogenesis to create the whole Numerical model and Mechanical analysis. Open-angle glaucoma is caused by pathological changes of trabecular meshwork. Intraocular aqueous fluid will be stuck and intraocular pressure will increase in both anterior and posterior chamber. Then, intraocular pressure of posterior chamber diffuses and oppress optic disc, causes the blurring and disability of sight.
This study apply two software, 3D Design software PROE and Finite element method simulation software ANSYS, to create mode and related simulation of open-angle glaucoma. This simulation analysis helps us to understand pressure distribution of glaucoma and where the stress gathers in different Cup-disc ratio.
This study analyzes stress distribution in different Cup-disc ratio of open-angle glaucoma. I do different researches based on Cup-disc ratio degree from 0.3 to 0.7. Under the same condition, I find from degree 0.3 to 0.7, surface depression shows that stress tends to get close to optic disc. Besides, where the stress gathers differs in different surface depression, so I also conduct numerical analysis based on different stress-gathering section.
The result of analyzing open-angle glaucoma can help the patient understand more about the cause of open-angle glaucoma. In addition, because Cup-disc ratio degree is the main cause of open-angle glaucoma, this study can also offer simulated data of reference value in medical use in the future.
論文目次 第一章 序論 1
1-1 前言 1
1-2 研究背景 3
1-3 文獻回顧 8
第二章 研究方法 15
2-1 有限元素法概論 15
2-2 應用軟體 16
2-3 研究過程 18
第三章 分析理論方程式 20
3-1 連續性方程式(CONTINUITY EQUATION) 20
3-2 動量方程式(MOMENTUM EQUATION) 20
3-3 可壓縮能量方程式(COMPRESSIBLE ENERGY EQUATION) 21
3-4 壓力(PRESSURE) 22
3-5 收斂檢測 23
第四章 分析元素、材料參數與邊界條件設定 25
4-1 定義分析元素 25
4-2 設定材料參數 27
4-3 眼球實體模型建立 30
4-4 初始條件設定 35
4-5 負載條件設定 36
第五章 數值模型分析結果 38
5-1 結果分析 38
5-1-1. 流體分析結果-眼球前後房流體模擬分析 38
5-1-2. 結構體分析結果 42
5-2 分析結果驗證 46
5-3 結果討論 57
5-3-1白種人、亞洲人、非洲人之視神經盤結構差異比較探討 57
5-3-2 白種人、亞洲人、非洲人之不同杯盤比探討 62
5-3-3 白種人、亞洲人、非洲人之不同材料參數下比較探討 68
第六章 結論與未來展望 77
6-1 結論 77
6-2 未來展望 79
參考文獻 80

圖目錄
圖 1-1青光眼視野損毀過程 3
圖 1-2房水流動示意圖[7] 5
圖 1-3 原發性隅角開放型青光眼示意圖[9] 6
圖2-1 ANSYS分析作業流程圖 17
圖2-2研究過程與流程圖 19
圖4-1 FLUID142元素圖[45] 25
圖4-2 SOLID45元素圖[45] 26
圖4-3 眼球前後房模型圖 31
圖4-4 眼球前後房網格圖 31
圖4-5 本研究之眼球模型剖面圖 33
圖4-6 完整眼球之3D模型圖 33
圖4-7完整眼球模型之3D網格圖 34
圖4-8房水流場設定圖 35
圖4-9 眼球結構示意圖[54] 37
圖4-10 邊界條件設定示意圖 37
圖5-1 眼球前後房壓力分佈圖 39
圖5-2 眼球前後房流場分佈圖 39
圖5-3 眼球前後房流線分佈圖 40
圖5-4 隅角開放型青光眼前後房壓力分佈圖 41
圖5-5 隅角開放型青光眼杯盤比0.3之應力分佈 43
圖5-6隅角開放型青光眼杯盤比0.35之應力分佈 43
圖5-7隅角開放型青光眼杯盤比0.4之應力分佈 43
圖5-8隅角開放型青光眼杯盤比0.45之應力分佈 44
圖5-9隅角開放型青光眼杯盤比0.5之應力分佈 44
圖5-10隅角開放型青光眼杯盤比0.55之應力分佈 44
圖5-11隅角開放型青光眼杯盤比0.6之應力分佈 45
圖5-12隅角開放型青光眼杯盤比0.65之應力分佈 45
圖5-13隅角開放型青光眼杯盤比0.7之應力分佈 45
圖5-14隅角開放型青光眼之前後房壓力分佈圖 48
圖5-15隅角開放型青光眼與文獻[21]比較之結構體應力分佈圖 48
圖5-16 文獻[49]MIN 應變峰值對照圖 52
圖5-17 文獻[49]MIN 應力峰值對照圖 52
圖5-18 文獻[49]MIN 應變均值對照圖 53
圖5-19 文獻[49]MIN 應力均值對照圖 53
圖5-20文獻[49]MAX 應變峰值對照圖 54
圖5-21 文獻[49]MAX 應力峰值對照圖 54
圖5-22文獻[49]MAX 應變均值對照圖 55
圖5-23文獻[49]MAX 應力均值對照圖 55
圖5-24 文獻[51]分析應力圖 56
圖5-25 為白種人、亞洲人、非洲人杯盤比0.3之眼球結構體應力分佈圖 59
圖5-26為白種人、亞洲人、非洲人之眼球結構體應變分佈圖 60
圖5-27 為白種人杯盤比0.3-0.7應力分佈圖 64
圖5-28 為亞洲人杯盤比0.3-0.7應力分佈圖 65
圖5-29 為非洲人杯盤比0.3-0.7應力分 66
圖5 30白種人之少年、中年、老年杯盤比0.3時應力分佈圖 69
圖5 31亞洲人之少年、中年、老年杯盤比0.3時應力分佈圖 70
圖5 32非洲人之少年、中年、老年杯盤比0.3時應力分佈圖 71
圖5 33白種人之少年、中年、老年應變分佈圖 72
圖5 34亞洲人之少年、中年、老年應變分佈圖 73
圖5 35非洲人之少年、中年、老年應變分佈圖 74
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