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題 名 | 弧形角膜切開術及直線橫向角膜切開術後角膜表面圖譜及角膜弧度變化之研究 |
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作 者 | 王一中; 胡芳蓉; 廖述朗; | 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1-5 |
分類號 | 416.711 |
關鍵詞 | 弧形角膜切開術; 直線橫向; 角膜切開術; 角膜表面圖譜; 角膜弧度變化; Arcuate keratotomy; Linear transverse keratotomy; |
語 文 | 中文(Chinese) |
中文摘要 | 正常角膜或角膜移植術後之散光問題一直是臨床上的重要課題,以往解 決的方法可分為眼鏡和手術方式兩種,但是如果散光度數太高則唯有手術才能矯 正。本研究以兔子為對象,比較臨床上常用的直線橫向和弧形角膜切開術兩種手 術方法對角膜散光和角膜表面圖譜所產生的影響。18隻兔子共分為參組,每組六 隻,左右眼分別施以單一或上下各一之直線橫向和弧形角膜切開術於6或8釐米之 同心圓上,術前和術後一、二、六星期、三個月測角膜弧度,並以角膜表面圖譜 儀測量角膜表面圖譜、角膜表面規指數、和不對稱指數。結果顯示對於6釐米同 心圓之單一或上下各一直線橫向比弧形角膜切開術對散光之產生效果較大。對於 角膜不對稱指數,列在6釐米同心圓上下各一之弧形角膜切開術要比直線橫向角 膜切開術小,其餘則沒有差別。本研究結果可提供臨床上選擇角膜切開術方法和 同心圓大小選擇的參考。 |
英文摘要 | To compare the astigmatism creating effect andtopographic changes after arcuate and straighttransverse incisions in rabbit eyes. Eighteen NewZealand white rabbits were equally divided into 3groups. Group I received single ninety degreesarcuate incision around 6 mm optic zone on one eyeand 6 mm straight transverse incision tangential to 6mm optic zone on the other eye respectively. Group2 underwent paired arcuate incisions around 6 mmoptic zone and 6 mm paired straight linear incisionsrespectively. Group 3 received paired arcuateincisions around 8 mm optic zone and 8 mm paiedstraight incisions respectively. Keratometric readingsand topographic changes were measuredpreoperatively and 1, 2, 6 weeks and 3 months postoperatively. Astigmatic changes were analyzedby vector analysis. Single and paired straightincisions have more astigmatism creating effects thanarcuate incisions around 6 mm optic zone (p<0.05).But there was no difference in paired 8 mm optic zoneincisions. Surface asymmetric index (SAI) was lessin paired arcuate incisions than paired straightincisions in 6 mm optic zone (P<0.05), but nodifference in single 6 mm and paired 8 mm optic zoneincision. There is no difference in surface regularityindex (SRI) among each group. Straight transverseincision (single and paired) had more astigmatismcreating effect than arcuate incision in 6 mm opticzone. Paired arcuate incisions had more benefits incentral symmetricity than paired angential incisions. |
本系統中英文摘要資訊取自各篇刊載內容。