中华眼视光学与视觉科学杂志
中華眼視光學與視覺科學雜誌
중화안시광학여시각과학잡지
CHINESE JOURNAL OF OPTOMETRY OPHTHALMOLOGY AND VISUAL SCIENCE
2010年
2期
99-103
,共5页
近视%眼球形态学%角膜非球面形态%角膜表面曲率%眼轴%前房深度%前房容积
近視%眼毬形態學%角膜非毬麵形態%角膜錶麵麯率%眼軸%前房深度%前房容積
근시%안구형태학%각막비구면형태%각막표면곡솔%안축%전방심도%전방용적
Myopia%Ocular biometry%Corneal asphericity%Comeal curvature%Axial length%Anterior chamber length%Anterior chamber volume
目的 了解高度近视眼眼前节形态的结构特点,探讨高度近视眼与中低度屈光不正眼的眼前节形态是否存在差异.方法 单眼高度近视患者23例(46眼),年龄(24.1±12.4)岁(范围8～49岁),屈光参差(8.73±4.73)D(范围1.62～16.75 D),进行双眼间的对照研究,高度近视眼(屈光不正度数高于-6.00 D)为高度近视组,对侧眼(屈光不正度数在-5.75 D之内)为对照组.用A型生物超声仪测量中央角膜厚度和眼轴长度,Pentacam眼前节三维分析仪测量角膜前后表面曲率(中央区角膜最大与最小子午线角膜曲率的平均值)或曲率半径、角膜前后表面非球面形态(30°范围的平均Q值)、角膜前后表面散光、前房深度、前房角及前房容积.采用SPSS 15.0统计软件,配对t检验用于双眼间的参数比较,直线相关用于两参数间的相互关系分析.结果 高度近视组的眼总散光、眼轴长度及跟轴长度/角膜曲率半径(AL/CR值)分别为(1.43±1.26)D、(27.45±1.63)mm及3.60±0.22;对照组的眼总散光、眼轴长度及AL/CR值分别为(0.93±0.92)D、(24.19±1.41)mm及3.16±0.12,两组比较均有统计学意义(t=-2.539,P<0.05;t=8.606,P<0.01;t=8.167,P<0.01).高度近视组的角膜前、后表面曲率,角膜前、后表面散光,角膜前、后表面非球面系数Q值,前房深度,前房角及前房容积分别为(44.1±1.8)D、(-6.3±0.3)D,(1.4±1.0)D、(0.3±0.2)D,-0.35±0.13、-0.16±0.18,(3.12±0.30)mm,(38.7±4.2)°及(178±37)mm3;而对照组的上述参数分别为(44.1±1.8)D、(-6.4±0.3)D,(1.3±0.8)D、(0.4±0.2)D,-0.33±0.10、-0.20±0.19,(3.08±0.32)mm,(38.8±5.8)°及(175±40)mm3;两组差异均无统计学意义(P>0.05).眼轴长度与等效球镜度在高度近视组和对照组均显示了高度线性相关关系(高度近视组r=0.662,P<0.01;对照组r=0.618,P<0.01).在高度近视组和对照组,角膜顶点曲率半径与等效球镜度无相关性(高度近视组r=0.287,P>0.05;对照组r=0.261.P>0.05).结论 高度近视眼与中低度屈光不正眼眼前节形态无明显差异,而眼轴长度存在明显差异,高度近视眼眼轴明显延长.
目的 瞭解高度近視眼眼前節形態的結構特點,探討高度近視眼與中低度屈光不正眼的眼前節形態是否存在差異.方法 單眼高度近視患者23例(46眼),年齡(24.1±12.4)歲(範圍8～49歲),屈光參差(8.73±4.73)D(範圍1.62～16.75 D),進行雙眼間的對照研究,高度近視眼(屈光不正度數高于-6.00 D)為高度近視組,對側眼(屈光不正度數在-5.75 D之內)為對照組.用A型生物超聲儀測量中央角膜厚度和眼軸長度,Pentacam眼前節三維分析儀測量角膜前後錶麵麯率(中央區角膜最大與最小子午線角膜麯率的平均值)或麯率半徑、角膜前後錶麵非毬麵形態(30°範圍的平均Q值)、角膜前後錶麵散光、前房深度、前房角及前房容積.採用SPSS 15.0統計軟件,配對t檢驗用于雙眼間的參數比較,直線相關用于兩參數間的相互關繫分析.結果 高度近視組的眼總散光、眼軸長度及跟軸長度/角膜麯率半徑(AL/CR值)分彆為(1.43±1.26)D、(27.45±1.63)mm及3.60±0.22;對照組的眼總散光、眼軸長度及AL/CR值分彆為(0.93±0.92)D、(24.19±1.41)mm及3.16±0.12,兩組比較均有統計學意義(t=-2.539,P<0.05;t=8.606,P<0.01;t=8.167,P<0.01).高度近視組的角膜前、後錶麵麯率,角膜前、後錶麵散光,角膜前、後錶麵非毬麵繫數Q值,前房深度,前房角及前房容積分彆為(44.1±1.8)D、(-6.3±0.3)D,(1.4±1.0)D、(0.3±0.2)D,-0.35±0.13、-0.16±0.18,(3.12±0.30)mm,(38.7±4.2)°及(178±37)mm3;而對照組的上述參數分彆為(44.1±1.8)D、(-6.4±0.3)D,(1.3±0.8)D、(0.4±0.2)D,-0.33±0.10、-0.20±0.19,(3.08±0.32)mm,(38.8±5.8)°及(175±40)mm3;兩組差異均無統計學意義(P>0.05).眼軸長度與等效毬鏡度在高度近視組和對照組均顯示瞭高度線性相關關繫(高度近視組r=0.662,P<0.01;對照組r=0.618,P<0.01).在高度近視組和對照組,角膜頂點麯率半徑與等效毬鏡度無相關性(高度近視組r=0.287,P>0.05;對照組r=0.261.P>0.05).結論 高度近視眼與中低度屈光不正眼眼前節形態無明顯差異,而眼軸長度存在明顯差異,高度近視眼眼軸明顯延長.
목적 료해고도근시안안전절형태적결구특점,탐토고도근시안여중저도굴광불정안적안전절형태시부존재차이.방법 단안고도근시환자23례(46안),년령(24.1±12.4)세(범위8～49세),굴광삼차(8.73±4.73)D(범위1.62～16.75 D),진행쌍안간적대조연구,고도근시안(굴광불정도수고우-6.00 D)위고도근시조,대측안(굴광불정도수재-5.75 D지내)위대조조.용A형생물초성의측량중앙각막후도화안축장도,Pentacam안전절삼유분석의측량각막전후표면곡솔(중앙구각막최대여최소자오선각막곡솔적평균치)혹곡솔반경、각막전후표면비구면형태(30°범위적평균Q치)、각막전후표면산광、전방심도、전방각급전방용적.채용SPSS 15.0통계연건,배대t검험용우쌍안간적삼수비교,직선상관용우량삼수간적상호관계분석.결과 고도근시조적안총산광、안축장도급근축장도/각막곡솔반경(AL/CR치)분별위(1.43±1.26)D、(27.45±1.63)mm급3.60±0.22;대조조적안총산광、안축장도급AL/CR치분별위(0.93±0.92)D、(24.19±1.41)mm급3.16±0.12,량조비교균유통계학의의(t=-2.539,P<0.05;t=8.606,P<0.01;t=8.167,P<0.01).고도근시조적각막전、후표면곡솔,각막전、후표면산광,각막전、후표면비구면계수Q치,전방심도,전방각급전방용적분별위(44.1±1.8)D、(-6.3±0.3)D,(1.4±1.0)D、(0.3±0.2)D,-0.35±0.13、-0.16±0.18,(3.12±0.30)mm,(38.7±4.2)°급(178±37)mm3;이대조조적상술삼수분별위(44.1±1.8)D、(-6.4±0.3)D,(1.3±0.8)D、(0.4±0.2)D,-0.33±0.10、-0.20±0.19,(3.08±0.32)mm,(38.8±5.8)°급(175±40)mm3;량조차이균무통계학의의(P>0.05).안축장도여등효구경도재고도근시조화대조조균현시료고도선성상관관계(고도근시조r=0.662,P<0.01;대조조r=0.618,P<0.01).재고도근시조화대조조,각막정점곡솔반경여등효구경도무상관성(고도근시조r=0.287,P>0.05;대조조r=0.261.P>0.05).결론 고도근시안여중저도굴광불정안안전절형태무명현차이,이안축장도존재명현차이,고도근시안안축명현연장.
Objective To investigate the biometric properties of the anterior segment of high myopia eyes, and to determine if there are differences in the ocular biometry of eyes with high myopia and low to moderate refractive errors. Methods Twenty-three patients [aged from 8 to 49 years, mean age (24.1±12.4)years]with unilateral high myopia (-6.00 diopters or more) were recruited for the paired study. Fellow eyes with low to moderate refractive errors (within -5.75 diopters) were used as a control group. Anisometropia was (8.73±4.73)D (range from 1.62 D to 16.75 D). The central comeal thickness and axial length (AL) were measured with A-scan ultrasonography and corneal curvature (mean curvature of the maximum and minimum meridian curvature of the central cornea), corneal asphericity (Q value within 30 degrees), corneal astigmatism、anterior chamber depth (ACD), anterior chamber angle (ACA) and anterior chamber volume (ACV) were measured with a Pentacam. Statistical analysis was performed with SPSS software for Windows (version 15.0). A paired t-test was used to evaluate the differences in the parameters between the two eyes and linear correlation was used to describe the correlation between the two variables. A P value of <0.05 was considered statistically significant. Results The high myopia group showed significantly higher ocular astigmatism [(1.43±1.26)D vs (0.93±0.92)D], AL [(27.45±1.63)mm vs (24.19±1.41)mm]and AL/CR (3.60±0.22 vs 3.16±0.12) than the control group (t=-2.539, P<0.05; t=8.606, P<0.01; t=8.167, P< 0.01, respectively). In the high myopia group, the anterior and posterior corneal curvature, corneal astigmatism and comeal asphericity, ACD, ACA and ACV were (44.1±1.8)D, (-6.3±0.3)D, (1.4± 1.0)D, (0.3±0.2)D, -0.35±0.13, -0.16±0.18, (3.12±0.30)mm, (38.7±4.2)° and (178±37)mm\ respectively; and in the control group, the values were (44.1±1.8)D, (-6.4±0.3)D, (1.3±0.8)D, (0.4± 0.2)D, -0.33±0.10, -0.20±0.19, (3.08±0.32)mm, (38.8±5.8)° and (175±40)mm3 respectively. There were no significant differences between the two groups (P>0.05). Spherical equivalent was positively correlated to AL in the high myopia group and control group (r=0.662, P<0.01; r=0.618, P<0.01, respectively). However, this value was not correlated to the corneal curvature radius (CR) in either group (high myopia group r=0.287, P=0.196, control group r=0.261, P=0.240). Conclusion There are no significant differences in the biometric properties of the anterior segment of the eye between high myopia and low to moderate refractive errors. The AL is the main biometric parameter related to high myopia.
