中国实用眼科杂志
中國實用眼科雜誌
중국실용안과잡지
CHINESE JOURNAL OF PRACTICAL OPHTHALMOLOGY
2008年
5期
467-470
,共4页
於水清%陈世豪%俞阿勇%吕帆
於水清%陳世豪%俞阿勇%呂帆
어수청%진세호%유아용%려범
波前像差仪%近视%验光%矢量分析
波前像差儀%近視%驗光%矢量分析
파전상차의%근시%험광%시량분석
Aberrometer%Myopia%Refraction%Power vector analysis
目的 研究iTrace波前像差仪在单眼闭合式和双眼开放式两种状态下,客观验光表达近视患者屈光状态的准确性.方法 对前瞻性研究近视患者39例77只眼,球镜-0.75-9.50D,柱镜0.00-2.50D.以主觉验光(综合验光仪标准流程)作为标准,主觉验光和iTrace波前像差仪单眼闭合式(iTrace单眼)和双眼开放式(iTraee双眼),客观验光之间的差值作为衡量iTrace波前像差仪客观验光准确性的指标.用矢量分析法分析验光结果.分别计算主觉验光、iTrace单眼验光和iTrace双眼验光之间的矢量差值和绝对屈光度差值(m值),再把矢量差值的平均值转换成球镜、柱镜和轴向差值的形式.结果 iTrace单眼验光和主觉验光比较,球镜、柱镜和轴向差值分别为:-0.02D、-0.25D和74.81度,m值的平均值为(0.53±0.31)D,其中m值小于0.75D的占81.82%;iTrace双眼验光和主觉验光比较,球镜、柱镜和轴向差值分别为:-0.27D、-0.20D、67.46度,m值的平均值为(0.56±0.29)D,其中m值小于0.75D的占75.32%;iTrace单眼验光和iTrace双眼验光与主觉验光比较,m值小于0.75D所占的百分比之间差异无统计学意义(P＞0.05).结论 iTrace波前像差仪能客观表达人眼的屈光状态,其结果能为主觉验光提供参考,但欲以iTrace单眼验光或iTrace双眼验光替代主觉验光尚有诸多问题有待解决.
目的 研究iTrace波前像差儀在單眼閉閤式和雙眼開放式兩種狀態下,客觀驗光錶達近視患者屈光狀態的準確性.方法 對前瞻性研究近視患者39例77隻眼,毬鏡-0.75-9.50D,柱鏡0.00-2.50D.以主覺驗光(綜閤驗光儀標準流程)作為標準,主覺驗光和iTrace波前像差儀單眼閉閤式(iTrace單眼)和雙眼開放式(iTraee雙眼),客觀驗光之間的差值作為衡量iTrace波前像差儀客觀驗光準確性的指標.用矢量分析法分析驗光結果.分彆計算主覺驗光、iTrace單眼驗光和iTrace雙眼驗光之間的矢量差值和絕對屈光度差值(m值),再把矢量差值的平均值轉換成毬鏡、柱鏡和軸嚮差值的形式.結果 iTrace單眼驗光和主覺驗光比較,毬鏡、柱鏡和軸嚮差值分彆為:-0.02D、-0.25D和74.81度,m值的平均值為(0.53±0.31)D,其中m值小于0.75D的佔81.82%;iTrace雙眼驗光和主覺驗光比較,毬鏡、柱鏡和軸嚮差值分彆為:-0.27D、-0.20D、67.46度,m值的平均值為(0.56±0.29)D,其中m值小于0.75D的佔75.32%;iTrace單眼驗光和iTrace雙眼驗光與主覺驗光比較,m值小于0.75D所佔的百分比之間差異無統計學意義(P＞0.05).結論 iTrace波前像差儀能客觀錶達人眼的屈光狀態,其結果能為主覺驗光提供參攷,但欲以iTrace單眼驗光或iTrace雙眼驗光替代主覺驗光尚有諸多問題有待解決.
목적 연구iTrace파전상차의재단안폐합식화쌍안개방식량충상태하,객관험광표체근시환자굴광상태적준학성.방법 대전첨성연구근시환자39례77지안,구경-0.75-9.50D,주경0.00-2.50D.이주각험광(종합험광의표준류정)작위표준,주각험광화iTrace파전상차의단안폐합식(iTrace단안)화쌍안개방식(iTraee쌍안),객관험광지간적차치작위형량iTrace파전상차의객관험광준학성적지표.용시량분석법분석험광결과.분별계산주각험광、iTrace단안험광화iTrace쌍안험광지간적시량차치화절대굴광도차치(m치),재파시량차치적평균치전환성구경、주경화축향차치적형식.결과 iTrace단안험광화주각험광비교,구경、주경화축향차치분별위:-0.02D、-0.25D화74.81도,m치적평균치위(0.53±0.31)D,기중m치소우0.75D적점81.82%;iTrace쌍안험광화주각험광비교,구경、주경화축향차치분별위:-0.27D、-0.20D、67.46도,m치적평균치위(0.56±0.29)D,기중m치소우0.75D적점75.32%;iTrace단안험광화iTrace쌍안험광여주각험광비교,m치소우0.75D소점적백분비지간차이무통계학의의(P＞0.05).결론 iTrace파전상차의능객관표체인안적굴광상태,기결과능위주각험광제공삼고,단욕이iTrace단안험광혹iTrace쌍안험광체대주각험광상유제다문제유대해결.
Objective To investigate the accuracy of objective refractive status measured by iTrace aberrometer in two ways (single eye closed field and binocular open field). Methods 77 myopic eyes of 39patients with refractive error ranged from-0.75 to-9.50 diopters (D) for sphere, 0 to-2.50 D for cylinder. Manifest refraction (MR) was used as the standard, the accuracy was defined as the difference among MR and that of the iTrace single eye closed field refraction and binocular open field refraction. The results were analyzed using power vector analysis. The vector error and absolute dioptric error (m) were computed, and then the mean vector error was converted to spherocylindrical power errors. Results The sphere-cylinder-axis error between MR and the iTrace single eye closed field refraction was-0.02D,-0.25D, 74.81°, respectively,and mean value ofm was (0.53±0.31 )D with 81.82% eyes within 0.75D. The sphere-cylinder-axis error between MR and the iTrace binocular open field refraction was-0.27D,-0.20D, 67.46°, respectively, and mean value of m was (0.56±0.29)D with 75.32% eyes. There was no significant difference between 81.82% and 75.32%ofm value within 0.75D (P＞0.05). Conclusions The iTrace waveffont aberrometer could objectively express refractive status in myopia, and as a reference of MR. There were many questions need to be solved if iTrace single eye closed field refraction or binocular open field refraction expected to replace the MR.
