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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/74656

    Title: 正常眼壓型青光眼之角膜厚度與眼球壓力分析
    Other Titles: Corneal thickness and pressure distribution analysis of the eyes of normal-tension glaucoma
    Authors: 戴吉謙;Dai, Ji-Chien
    Contributors: 淡江大學機械與機電工程學系碩士班
    李宗翰;Lee, Tzung-Hang
    Keywords: 正常眼壓型青光眼;角膜;眼壓;房水;Normal-tension glaucoma;cornea;Intraocular pressure;Aqueous humor
    Date: 2011
    Issue Date: 2011-12-28 19:12:35 (UTC+8)
    Abstract: 正常眼壓型青光眼為青光眼病症的主要類型之一,多數的青光眼類型皆可以量測眼壓是否過高而察覺異狀,但正常眼壓型青光眼早期多無明顯症狀,且患者眼壓量測值皆位於正常範圍內,相較於一般青光眼病患較不易直接從眼壓上判斷病症。
    Normal-tension Glaucoma is one of the main types of glaucoma. Most types of glaucoma can be judged by their higher intraocular pressure. But, normal-tension glaucoma (NTG) shows no obvious symptoms, and the intraocular pressure is normal in its early stage. It is hard to tell if one having NTG by simply checking intraocular pressure value.
    Glaucoma is a disease of optic nerve caused by increased intraocular pressure. An elevated intraocular pressure may irreversibly damage optic nerve which resulting in a progressive, permanent loss of vision when the pressure exceeds the load of optic nerve. In NTG, the measured value of internal pressure is not the real internal pressure. The major factor to cause this discrepancy is the thickness of central corneal. The thicker is the cornea, the overestimated is the intraocular pressure. The accuracy of the glaucoma diagnosis is then mis-conducted.
    This study used numerical simulation to exam the relationship of normal-tension glaucoma and corneal thickness. The pressure distribution and the flow of aqueous humor in ocular structure are found and shown to know more of the impact of the corneal thickness and the value of intraocular pressure measured.
    Appears in Collections:[Graduate Institute & Department of Mechanical and Electro-Mechanical Engineering] Thesis

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