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頁籤選單縮合
題 名 | 青光眼網膜神經纖維層的臨床評估(4)--青光眼之楔狀網膜神經纖維層缺損與視野缺損的關係 |
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作 者 | 謝瑞玟; 藍郁文; | 書刊名 | 中華民國眼科醫學會雜誌 |
卷 期 | 34:4 1995.12[民84.12] |
頁 次 | 頁29-39 |
分類號 | 416.748 |
關鍵詞 | 青光眼; 網膜神經纖維層; 楔狀網膜神經纖維層; Nerve fiber layer; Wedge-shaped defect; Cup/Disc ratio; Visual field; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究自馬偕醫院青光眼特別門診中,選出35位已確定患有青光眼,且 具有楔狀網膜神經纖維層缺損的病患,來探討網膜神經纖維層之楔狀缺損與視野 變化間的關係。76個具有楔狀缺損的半邊(Hemifield)網膜神經纖維層,其中18.4 的視野仍是正常的。當楔狀網膜神經纖維層缺損<0.5 o'clock時,mean defect(MD) 值出現不正常,而不正常的corrected loss variance(CLV)值則需楔狀缺損≧1.0 o'clock時才會出現,一旦MD,CLV值均呈明顯異常時,則楔狀缺損己≧1.5 o'clock; 當楔狀缺損<1.0 o'clock時,cup/discratio(C/D ratio)仍可能出現<0.5的情形。楔狀缺 損的嚴重程度,與視野變化的種類,嚴重程度及MD,CLV值之間皆有很好的相 關性。而楔狀缺損的嚴重程度與C/D ratio間,也有正比的關係。正常的視野及正 常的C/D ratio均不能代表其網膜神經纖維層是正常的。網膜神經纖維層的缺損比 視野變化早發生,且此檢查與視神經盤檢查有相當的敏感度,因此網膜神經纖維 層的檢查應廣為使用,以期早期診斷青光眼。 |
英文摘要 | Thirty five cases of glaucoma with wedge-shaped nerve fiber layer defect were selected fromthe glaucoma clinic in Mackay Memorial Hospital todiscuss the relationship between wedge-shaped nervefiber layer defect and visual field changes. About18.4 of the hemifield with wedge-shaped retinalnerve fiber layer defect had normal visual field. Whenthe wedge-shaped nerve fiber layer defect was <0.5 o'clock, the value of mean defect (MD) was usuallyabnormal. The corrected loss variance (CLV) valuebecame abnormal when the wedge-shaped nerve fiber layer defect was >. 1.0 o'clock. If the wedge-shaped nerve fiber layer defect was < 1.5 o'clock, the value of MD and CLV were obviously abnormal. It was noted that the C/D ratio was remained < 0.5 in cases with the wedge-shaped nerve fiber layer defect < 1.0o'clock. There was a close correlation between theseverity of wedge-shaped nerve fiber layer defect andthe visual field changes in type, severity, MD andCLV value. Besides, the more the severity of wedgeshaped nerve fiber layer defect was noted, the morethe C/D ratio was increased. The normal visual fieldand the normal C/D ratio did not mean that the nervefiber layer was normal. The nerve fiber layer defectalways happens earlier than the visual field change and the sensitivity of nerve fiber layer examination is as sensitive as the optic disc examination.Therefore, nerve fiber layer examination is a good method for early diagnosis of glaucoma. |
本系統中英文摘要資訊取自各篇刊載內容。