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应用超声生物显微镜研究睫状肌麻痹剂对眼前节结构的影响
作者姓名:Wang T  Liu L  Li Z  Hu S  Yang W  Zhu X
作者单位:首都医科大学附属北京同仁医院眼科
摘    要:目的应用超声生物显微镜观察局部应用睫状肌麻痹剂前、后眼前节形态结构的改变及其与眼压的关系,同时对睫状体厚度、睫状体晶体赤道部距离进行观察。方法以48只正常眼为研究对象,在局部应用2%后马托品前、后分别进行眼前节结构的超声生物显微镜定量测定,并测量眼压。对其结果进行统计学分析。结果用药后在反映房角改变的参数中,小梁虹膜夹角减小,房角开放距离250减小,虹膜厚度1增厚,前房加深,虹膜晶体接触距离缩短,差异均有显著性(P<0.05);在反映睫状体改变的参数中,睫状体和睫状突的厚度减小,巩膜睫状体夹角增大,虹膜悬韧带距离减小,睫状体晶体距离增大,差异有显著性(P<0.05)。应用睫状肌麻痹剂后,眼压由2.35±0.46kPa(1kPa=7.5mmHg)升高至2.43±0.47kPa,但差异无显著性(P>0.05)。结论局部应用睫状肌麻痹剂后,前房加深、房角变窄、睫状体变薄且向后运动、睫状体晶体距离增大。超声生物显微镜能动态观察眼前节结构的改变并行定量测定,在眼前节形态学研究中具有优越性。

关 键 词:超声检查  眼前半段  散瞳剂
收稿时间:1997-02-05
修稿时间:02 5 1997 12:00AM

An ultrasound biomicroscopic study on changes of the structure of ocular anterior segment after topical application of cycloplegia
Wang T,Liu L,Li Z,Hu S,Yang W,Zhu X.An ultrasound biomicroscopic study on changes of the structure of ocular anterior segment after topical application of cycloplegia[J].Chinese Journal of Ophthalmology,1998,34(2):137-140.
Authors:Wang T  Liu L  Li Z  Hu S  Yang W  Zhu X
Institution:Department of Ophthalmology, Tongren Hospital, Capital University of Medical Science, Beijing 100730.
Abstract:OBJECTIVE: To observe the changes of ocular anterior segment and the relation between the intraocular pressure (IOP) and these changes after the topical application of cycloplegia using ultrasound biomicroscope (UBM), especially to observe the changes of ciliary body thickness and ciliary body-lens distance. METHODS: The quantitative measurement of UBM and the measurement of IOP had been done in 48 normal eyes before and after the topical use of 2% homatropine solution. The results were statistically analyzed. RESULTS: In the parameter reflecting the change of the anterior chamber angle after using 2% homatropine, the trabecular iris angle decreased, the angle open distance 250 decreased, the iris thickness 1 increased, the anterior chamber became deeper and the iris-lens contact distance became shorter, and all these differences were statistically significant (P < 0.05). In the parameter reflecting the changes of ciliary body, the ciliary body thickness and the ciliary process thickness decreased, the scleral ciliary body angle increased, the iris-zonule distance decreased and the ciliary body-lens distance increased, and all these differences were significant statistically (P < 0.05). The IOP increased from 2.35 +/- 0.46 kPa to 2.43 +/- 0.47 kPa after the topical use of 2% homatropine, but the differences were not statistically significant (P > 0.05). CONCLUSIONS: After the topical application of cycloplegia, the anterior chamber becomes deeper, the anterior chamber angle becomes narrower, the ciliary body becomes thinner and moves backward and the ciliary body-lens distance increases. By using UBM the structure of ocular anterior segment in its moving state can be observed and these structures can be measured quantitatively. The ultrasound biomicroscopic imaging has its advantages in the morphological study of ocular anterior segment.
Keywords:Ultrasonography    Anterior eye segment    Mydriatics
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