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1.
目的:评价表面麻醉下行白内障超声乳化摘除及人工晶体植入的临床效果。方法:对400例白内障进行表面麻醉下超声乳化摘除及人工晶体植入术,观察麻醉效果,术中、术后并发症和术后视力。结果:400例表面麻醉成功率为92%,术中、术后无严重并发症,术后视力恢复快,病人反应较轻。结论:在熟练掌握超声乳化技术的基础上表面麻醉下超声乳化手术是安全有效的。  相似文献   

2.
目的:总结透明角膜切口的超声乳化与折叠式人工晶状体植入手术治疗白内障的手术方法及临床疗效。方法:在表面麻醉下以透明角膜切口对460例(582只眼)白内障患者施行超声乳化摘除术,并植入折叠式人工晶状体。结果:术后3h及1d裸眼或球镜矫正视力≥0.5者占87%、90.9%;术后1周及1个月视力≥1.0者占29%、31%。术前无散光而术后出现散光的31例,但均在+1.0D以下。结论:透明角膜切口的超声乳化与折叠式人工晶状体植入术具有手术切口小、安全可靠、手术时间短、术后视力恢复快且稳定的优点。  相似文献   

3.
目的 :总结透明角膜切口的超声乳化与折叠式人工晶状体植入手术治疗白内障的手术方法及临床疗效。方法 :在表面麻醉下以透明角膜切口对 4 60例 (5 82只眼 )白内障患者施行超声乳化摘除术 ,并植入折叠式人工晶状体。结果 :术后 3h及 1d裸眼或球镜矫正视力≥ 0 .5者占 87%、90 .9% ;术后 1周及 1个月视力≥ 1.0者占 2 9%、31%。术前无散光而术后出现散光的 31例 ,但均在+ 1.0D以下。结论 :透明角膜切口的超声乳化与折叠式人工晶状体植入术具有手术切口小、安全可靠、手术时间短、术后视力恢复快且稳定的优点。  相似文献   

4.
小切口非乳化白内障囊外摘除术的探讨   总被引:1,自引:0,他引:1  
目的:探讨小切口非乳化白内障囊外摘出联合人工晶状体植入术的效果。方法:对136例(162眼)白内障患者施行小切口非超声乳化白内障囊外摘出人工晶状体植入手术。结果:术后最佳矫正视力≥1.O者21眼(12.9%),≥0.5者117眼(72.3%)。术后散光轻,伤口愈合快,并发症少。结论:该术式具有切口小、愈合快、术后散光小、视力恢复快及操作简单、无需特殊设备之优点。  相似文献   

5.
目的 观察应用爱尔卡因表面麻醉在超声乳化白内障摘除及人工晶体植入术中的临床效果.方法 应用利多卡因作单纯角结膜表面麻醉,实施白内障超声乳化及人工晶体植入术456例(495眼),观察其麻醉效果.结果 456眼(92.12%)术中完全不感疼痛或偶感轻微疼痛,手术配合良好.34眼(6.87%)术中疼痛,需加点爱尔卡因1~2次后顺利完成手术;5眼(1.01%)术中疼痛,需加用球后或球周麻醉方可完成手术.结论 爱尔卡因表面麻醉是实施超声乳化白内障摘除及人工晶体植入术的有效麻醉方法.  相似文献   

6.
目的 观察应用爱尔卡因表面麻醉在超声乳化白内障摘除及人工晶体植入术中的临床效果.方法 应用利多卡因作单纯角结膜表面麻醉,实施白内障超声乳化及人工晶体植入术456例(495眼),观察其麻醉效果.结果 456眼(92.12%)术中完全不感疼痛或偶感轻微疼痛,手术配合良好.34眼(6.87%)术中疼痛,需加点爱尔卡因1~2次后顺利完成手术;5眼(1.01%)术中疼痛,需加用球后或球周麻醉方可完成手术.结论 爱尔卡因表面麻醉是实施超声乳化白内障摘除及人工晶体植入术的有效麻醉方法.  相似文献   

7.
目的 :探讨非超声乳化小切口白内障摘除及人工晶状体植入术的临床效果。方法 :采用上方角膜缘后2mm1/2层巩膜隧道小切口注水圈套器娩核及人工晶体植入 ,巩膜切口不缝或缝一针。结果 :术后3mo视力≥0 2占98 6%,≥0 5占84 2%,≥0 8占48 3%,术中并发后囊破裂3例 ,滤泡形成及浅前房4眼 ,术后并发角膜水肿22眼。结论 :该手术费用少 ,术后反应小 ,视力恢复快  相似文献   

8.
近年来,随着眼科显微技术的发展和超声乳化白内障摘除人工晶体植入的广泛应用,许许多多白内障患者恢复了有用视力.然而,在广泛开展超声乳化白内障摘除人工晶体植入的同时,个别地方也零星出现超声乳化白内障摘除人工晶状体植入及其材料的并发症和不良事件甚至严重不良事件的报道,引起社会和卫生部门的极大关注.如何规范白内障手术医生的诊疗行为,如何提高白内障超声乳化摘除人工晶体植入的安全性和有效性及白内障摘除人工晶状体植入及其材料的并发症和不良事件的监测与术后随访也日趋倍受关注.本文就人工晶状体材料与人工晶状体植入术并发症及不良事件进行探讨.  相似文献   

9.
探讨表面麻醉下行白内障超声乳化并人工晶体植入术的安全性及便捷性。观察181例(186眼)单纯表面麻醉下行白内障超声乳化并人工晶体植入术的麻醉效果、术后效果及并发症。全部患者都能够很好地配合表面麻醉下行该手术,无一例患者改用其他麻醉方法。手术时间为7~15min。术后3个月矫正视力大于0.6者占81.18%。表面麻醉下行白内障超声乳化人工晶体植入术是一种安全有效的选择,二者相结合使手术更安全、更快捷、术后恢复更快。  相似文献   

10.
车海蓉 《甘肃科技》2016,(22):140-141
研究分析老年性白内障超声乳化配合人工晶体植入术治疗的效果。选取2013年1月~2015年10月到高台县人民医院就诊的老年性白内障患者118例,根据随机数字表法将其分为研究组和对照组,每组59例。给予对照组小切口白内障摘除术配合人工晶体植入术治疗,给予研究组超声乳化配合人工晶体植入术治疗,观察两组术后1d、30d的视力水平情况及并发症发生情况。研究组术后1d、30d视力水平均明显高于对照组(P0.05);研究组并发症发生率5.08%明显低于对照组16.95%(P0.05)。采用超声乳化配合人工晶体植入术治疗老年性白内障可明显改善患者视力水平,降低并发症发生率,值得临床推广和使用。  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.  相似文献   

13.
王慧 《科技信息》2008,(10):240-240
Wuthering Heights, Emily Bronte's only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.  相似文献   

14.
The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3~4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰~ -7.8‰, PDB) and matrix dolomites (-6.6‰~ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084~0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078~0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.  相似文献   

15.
Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.  相似文献   

16.
以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.  相似文献   

17.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

18.
Quality traits in wheat (Triticum aestirum L.) were studied by quantitative trait locus (QTL) analysis in a recombinant inbred line (RIL) population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross (ChSh). Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.  相似文献   

19.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

20.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

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