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Endoscopy-assisted ocular surgery is a relatively old technique that is increasingly being recognized for its application in cases of vitreoretinal disease. This technique is especially useful when both the vitreous and retina are difficult to access because of media opacity, a small pupil, or a microcornea. In this context, the anterior vitreous is often difficult to dissect because of its complex pathological changes. This article reviews the common anatomical features and pathologies that are observed in the anterior vitreous, as well as the applications and indications of endoscopy-assisted vitrectomy in the anterior vitreous.  相似文献   
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门诊浅层点状角膜炎的病因及临床特点分析   总被引:2,自引:0,他引:2  
其常见病因及临床特点。方法:对2003-07/2007-05就诊于我院门诊的1220例浅层点状角膜炎的病例行裂隙灯检查,角膜染色检查,泪膜破裂时间(<10s为阳性),泪河宽度(<0.5mm为阳性),SchirmerⅠ试验及刮片细菌培养。之后按其病因,性别,眼别进行了分类统计。结果:1220例浅层点状角膜炎的病例中,男460例(920眼),女760例(1520眼),男与女比为1∶1.65。单眼发病408例,双眼发病812例,两者比例近1∶2。原因不明的干眼症所致角膜炎为277例(22.7%)。其次是各种原因所致的暴露性角膜炎229例(18.8%)。再次为倒睫致角膜炎,角膜接触镜所致角膜炎,眼表不规则,化妆品所致角膜炎等。结论:统计结果揭示女性及双眼发病较为常见。不明原因干眼症所致角膜炎日趋增多,应引起足够重视,且绝大多数浅层点状角膜炎都是有因可查,病因不明者仅占极少数。其中感染性原因明显减少,非感染性原因则显著增多,提示在临床工作中要注意非感染因素的存在及严重危害,并做到对症治疗。  相似文献   
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目的:探讨改良式前房放液法在白内障超声乳化吸出术后早期高眼压的应用价值。方法:对我院3170眼白内障超声乳化吸出术患者中14眼出现术后早期高眼压的患者经过一次性注射器针头轻压角膜侧切口放出部分房水,降低眼压,减轻角膜水肿。结果:经过上述处理后14眼眼压下降为(11.4±5.1)mmHg,角膜透明;视力大于或等于0.7者8眼,0.3~0.5者5眼,0.2者1眼;未出现与改良式前房放液相关并发症。结论:改良式前房放液治疗白内障超声乳化术后早期高眼压简单易行、安全有效,值得推广。  相似文献   
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目的探讨超声乳化联合前段玻璃体切割和钝性房角分离治疗闭角型青光眼合并白内障晶体半脱位的临床疗效及可行性。方法采用超声乳化联合前段玻璃体切割后房型人工晶状体植入和钝性房角分离法治疗18例(18眼)伴有白内障晶状体半脱位的闭角型青光眼患者,回顾分析其临床资料,对手术技巧、术后视力、眼压、前房深度、前房角及并发症进行探讨。结果 18例(18眼)患者术后1d、1周和3个月的平均视力分别为0.30±0.41、0.37±0.32和0.52±0.36,较术前平均视力0.15±0.19明显提高,差异均有统计学意义(均为P<0.05)。术后1d、1周、3个月平均眼压分别为(18.3±7.8)mmHg(1kPa=7.5mmHg)、(15.8±3.9)mmHg、(16.2±2.6)mmHg,与术前用药前平均眼压(30.7±6.5)mmHg及药物治疗后平均眼压(17.2±4.8)mmHg比较,差异均有统计学意义(均为P<0.05)。术后3个月前房深度(3.04±0.38)mm较术前(1.98±0.31)mm显著增加(P<0.05);术后患者房角均较术前增宽,房角粘连关闭象限不同程度开放,无严重并发症发生。结论超声乳化联合前段玻璃体切割后房型人工晶状体植入和钝性房角分离治疗白内障晶状体半脱位合并闭角型青光眼是一种安全、有效、可行的手术方式。  相似文献   
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王敏  唐娜  燕振国  曹虹  曹芳 《国际眼科杂志》2009,9(6):1185-1187
目的:通过对我院801例与南方医院1000例眼底荧光血管造影(fundus fluorescence angiography,FFA)结果进行对比分析,探讨地域及其他各因素对眼底病病种构成比的影响。方法:将我院接受FFA患者资料801例与南方医院接受FFA患者资料1000例结果进行统计对比,并分析其原因。结果:视网膜血管阻塞性疾病、年龄相关性黄斑变性(agerelated macular degeneration,AMD)及糖尿病视网膜病变(diabetic retinopathy,DRP)患者数量我院明显大于南方医院,中心性浆液性脉络膜视网膜病变(central serous chorioretinopathy,CSC)患者数量南方医院明显大于我院。结论:由于我院就诊患者与南方医院就诊患者在生存环境、经济实力、饮食习惯、文化程度及就医依从性等存在差别,导致在眼底病种类及严重程度方面存在差异。  相似文献   
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AIM: To investigate the therapeutic effects of local and systemic administration of AMD3100 for alkali burn induced corneal neovascularization (CNV) in mice. METHODS: CNV was induced in vivo by alkaline burn of cornea in C57BL/6 mice. AMD3100 was administrated topically by subconjunctival injection or systemically by intraperitoneal injection for 7 days; balanced salt solution was administrated topically or systemically as a control respectively. Inflammatory index was evaluated by slit-lamp biomicroscopy and inflammatory cells infiltrated to cornea tissue were detected by histologic analysis at multiple time points. CNV was compared between the local and systemic treated mice 2 weeks after alkali burn, as quantified by CD34 immunostaining. Fluorescence-Activated Cell Sorter Analysis was used to investigate the mobilizing effects of EPC in mice after subconjunctival injected or intraperitoneal injected AMD3100. Immunohistochemistry was used to detect the expression of endothelial progenitor cells (EPC) marker proteins VEGFR2 and CD34. RESULTS: Three days after alkali burn, infiltration of inflammatory cells was found in corneal tissue. At the first 7 days of local injection group, the number of inflammatory cells was significantly lower than that in systemic injection group. CNV could be seen at the 7th day, and at the 14th day reached the peak, then started to decrease. The number of CNV in the subconjunctival injection group was 7.57±1.26 per 0.034mm2, compared to a number of 14.87±2.21 per 0.034mm2 in the control group (P<0.05). On the contrary, the number of CNV in the intraperitoneal injection group was a little higher than that in the control group, 16.34±1.53 per 0.034mm2 vs 13.26±1.87 per 0.034mm2. The research also showed that intraperitoneally, but not subconjunctivally injected AMD3100 could mobilize EPC. On the other hand, subconjunctival, but not intraperitoneally injected AMD3100 could reduce the expression of EPC marker proteins. CONCLUSION: In mice locally administrated AMD3100 can reduce the number of alkali burn induced CNV. The number of inflammatory cells and inflammatory responses in corneal tissue.  相似文献   
7.
杨磊  郭海科  曾锦 《中国临床康复》2012,(33):6199-6205
背景:Orbscan Ⅱ眼前节分析系统和Pentacam眼前节分析系统均能对角膜前后表面屈光力进行测量,但两者结果的一致性、精确性尚无定论。目的:利用2种不同眼前节分析系统对屈光手术前后的角膜前后表面屈光力进行测量,分析2种仪器的可靠性,及角膜屈光手术对角膜后表面形态的影响。方法:纳入2010-02/04在广东省人民医院屈光手术中心连续就诊的近视患者69例患者(136眼),行准分子激光原位角膜磨镶33例65眼和准分子激光上皮下角膜磨镶36例71眼,比较Orbscan Ⅱ眼前节分析系统和Pentacam眼前节分析系统检测不同手术方法的角膜前后表面3mm平均轴向屈光力和的测量值。结果与结论:屈光手术前后,2种仪器前后表面屈光力测量值的差异有显著性意义。后表面屈光力的Orbscan Ⅱ眼前节分析系统测量值在术后均变小,而Pentacam眼前节分析系统测量值无显著改变。Orbscan Ⅱ眼前节分析系统测量的后表面屈光力变化值与残余基质层厚度存在线性相关。提示2种仪器的测量结果不能相互替代使用。后表面屈光力,在屈光手术前Pentacam眼前节分析系统测量值较小,但在屈光手术后则相反,Pentacam眼前节分析系统并未发现Orbscan Ⅱ眼前节分析系统测量出的术后后表面前突。  相似文献   
8.
Endoscopy-assisted ocular surgery is a relatively old technique that is increasingly being recognized for its application in cases of vitreoretinal disease. This technique is especially useful when both the vitreous and retina are difficult to access because of media opacity, a small pupil, or a microcornea. In this context, the anterior vitreous is often difficult to dissect because of its complex pathological changes. This article reviews the common anatomical features and pathologies that are observed in the anterior vitreous, as well as the applications and indications of endoscopy-assisted vitrectomy in the anterior vitreous.  相似文献   
9.
目的:评价Canon Staar KS—3Ai非球面人工晶状体(IOL)对提高年龄相关性白内障患者术后视功能的作用。方法:年龄相关性白内障患者98例(126眼)随机分成两组。在白内障超声乳化吸除术后,观察组52例(65眼)植入非球面IOL(Canon Staar KS—3Ai),对照组46例(61眼)植入球面IOL(Allergan Sensor AR40e)。观察患者术后的裸眼视力(uncorrected visual activity,UCVA)、最佳矫正视力(best corrected visual activity,BCVA)、屈光状态、对比敏感度(contrast sensitivity,CS)、波前像差的均方根(root mean square,RMS)值。随访时间为术后6mo。结果:术后6mo两组UCVA、BCVA、屈光状态差异无统计学意义。无眩光环境下12,18c/d空间频率和眩光环境下6,12,18c/d空间频率上观察组CS明显优于对照组。在瞳孔直径6mm时,观察组4阶像差、4阶球差、总高阶像差RMS值低于对照组。在瞳孔直径6mm时3阶像差、5阶像差RMS值及瞳孔直径3mm时两组高阶像差RMS值差异无统计学意义。结论:非球面IOL眼视觉质量明显优于球面IOL眼。  相似文献   
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背景:角膜新生血管化不但严重影响视力,也是同种异体角膜移植术后发生排斥反应的高危因素,因此研究角膜新生血管发病机制和能阻止其形成的抑制剂,一直是眼科学的热点和难点。目的:采用缝线法建立大鼠角膜新生血管模型,以地塞米松作为糖皮质激素类角膜新生血管抑制剂,探讨核因子κB在角膜新生血管发生发展中的作用机制。设计:随机对照的实验研究。单位:南方医科大学珠江医院眼科。材料:实验于2005—01/04在解放军第一军医大学珠江医院眼科完成。选用55只出生二三个月雄性健康清洁级Wistar大鼠。兔抗大鼠核因子κB P65多克隆抗体,兔抗大鼠血管内皮生长因子、细胞间粘附分子1多克隆抗体均购自武汉博士德生物工程有限公司。方法:①实验干预:摸球法随机将大鼠分为生理盐水组(n=25)、地塞米松组(n=25)、正常角膜组(n=5)。生理盐水对照组及地塞米松组大鼠采用缝线法建立大鼠角膜新生血管模型后,分别给予生理盐水及地塞米松眼液点右眼,2滴,次,3次/d,至术后18d。正常角膜组无干预措施。②实验评估:术后1,3,7,12,18d对生理盐水对照组及地塞米松组大鼠进行角膜新生血管生长评分,取各组角膜切片后光镜下观察各组角膜组织学变化,并采用免疫组织化学染色检测各组角膜核因子κB与细胞间粘附分子1、血管内皮生长因子的表达。主要观察指标:①角膜新生血管生长评分。②角膜组织学变化。③各组角膜核因子κB与细胞间粘附分子1、血管内皮生长因子的表达。结果:①角膜新生血管生长评分:地塞米松组角膜新生血管受到了明显的抑制,其术后各时间点的角膜新生血管评分均低于生理盐水组(P〈0.05~0.01)。②角膜组织学变化:地塞米松组角膜缝线诱导后新生血管及炎性细胞浸润均较对?  相似文献   
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