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PL Macken FRACO FRACS CJ Pavlin FRCS R Tuli MD GE Trope PhD FRCS 《Clinical & experimental ophthalmology》1995,23(3):217-220
Background: Spherophakia is an uncommon diagnosis. This is the first case report of spherophakia evaluated by ultrasound biomicroscopy.
Methods: Ultrasound biomicroscopy is a new diagnostic technique developed by one of the authors and provides images with microscopic resolution of the anterior segment. A patient with spherophakia was evaluated by ultrasound biomicroscopy (Zeiss-Humphrey, 50MHz) before and after YAG laser iridotomy.
Results: Ultrasound biomicroscopic assessment revealed a shallow anterior chamber, a very steep anterior lens curvature, iridolenticular contact, elongated zonules, and an increased distance between the lens equator and the ciliary processes. Angle closure glaucoma was due to a pupil block mechanism. The pupil block was relieved by YAG laser iridotomy.
Conclusions: Ultrasound biomicroscopy is a useful technique to confirm the diagnosis of spherophakia. The pupil block in spherophakia is relieved by YAG laser iridotomy. 相似文献
Methods: Ultrasound biomicroscopy is a new diagnostic technique developed by one of the authors and provides images with microscopic resolution of the anterior segment. A patient with spherophakia was evaluated by ultrasound biomicroscopy (Zeiss-Humphrey, 50MHz) before and after YAG laser iridotomy.
Results: Ultrasound biomicroscopic assessment revealed a shallow anterior chamber, a very steep anterior lens curvature, iridolenticular contact, elongated zonules, and an increased distance between the lens equator and the ciliary processes. Angle closure glaucoma was due to a pupil block mechanism. The pupil block was relieved by YAG laser iridotomy.
Conclusions: Ultrasound biomicroscopy is a useful technique to confirm the diagnosis of spherophakia. The pupil block in spherophakia is relieved by YAG laser iridotomy. 相似文献
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目的比较和分析高度近视有晶状体眼人工晶状体(phakic IOL)植入前应用Ar+激光联合Nd∶YAG激光虹膜周切术和单纯Nd∶YAG激光虹膜周切术的成功率和临床变化。方法高度近视眼患者60例112只眼随机分为两组,一组为联合激光组54只眼,先应用Ar+激光对拟周边虹膜切开部位进行环形击射,再以Nd∶YAG激光进行集中击射,直至将虹膜切开孔直径≥2.0 mm;另一组为单一激光组58只眼,直接应用Nd∶YAG激光对选定拟周边虹膜切开部位进行击射,直至虹膜切开孔直径≥2.0 mm。激光术后进行人工晶状体植入手术,比较两种方法治疗后患者的眼压变化、角膜内皮细胞损伤及并发症情况。结果 (1)联合激光组和单纯Nd∶YAG激光虹膜周切术术前平均眼压分别为(15.54±2.84)mmHg、(15.32±2.58)mmHg,术后30 min平均眼压分别为(16.96±3.90)mmHg、(16.43±4.57)mmHg,较术前均有升高(P0.05),但两组间差异无统计学意义(P0.05)。(2)联合激光组和单一激光组虹膜周切术术前角膜内皮细胞密度分别为(3 151.2±232.3)个/mm2、(3 158.3±236.5)个/mm2,phakic IOL植入术后1个月分别为(3 068.1±265.9)个/mm2、(2 972.3±290.3)个/mm2,较术前均有降低(P0.05),但两组间变化幅度比较差异无显著意义(P0.05)。(3)联合激光组仅1只眼需行二次激光手术,16.7%发生虹膜出血,出血量较少;而Nd∶YAG单一激光组5只眼行二次激光手术,25.9%发生虹膜出血,出血量相对较多。结论联合激光手术对高度近视phakic IOL植入术前虹膜周切术较单纯Nd∶YAG激光虹膜周切术有优越性,虹膜切开成功率较高,出现并发症较少。 相似文献
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目的比较普拉洛芬滴眼剂和氟甲松龙滴眼剂治疗激光虹膜切开术后炎症反应的成本效果。方法将80例(80眼)行激光虹膜切开术后的患者随机分为试验组和对照组,试验组40例(40眼),选用0.1%普拉洛芬滴眼剂点眼,对照组40例(40眼),选用0.1%0.1%氟甲松龙滴眼剂点眼,观察疗效并进行药物经济学成本-效果分析。结果效率分别为95%和97.5%。成本分别为51.4元和23.2元,成本效果比分别为0.541和0.238。结论 0.1%氟甲松龙滴眼液滴眼剂治疗激光虹膜切开术后炎症反应比0.1%普拉洛芬滴眼剂更经济。 相似文献
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伴僵直小瞳孔的外伤性白内障摘出人工晶状体植入术 总被引:1,自引:1,他引:0
目的 探讨伴僵直小瞳孔的外伤性白内障摘出和人工晶状体植入术的方法,技巧及并发症处理。方法 对13例13眼上述的白内障采用虹膜切开法完成白内障摘出和人工晶状体植入果术后矫正视力0.1者1眼,0.2-0.4者5眼,0.5-0.6者4眼,0.8-1.0者3眼。术后无严重并发症。结论 采用虹膜切开法完成伴僵直小瞳孔的外伤性白内障摘出人工晶状体植入术是安全可靠的。 相似文献
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Since the introduction of microsurgery by the neodymium-doped yttrium aluminium garnet (Nd-YAG) laser many conventional surgical procedures for the anterior segment of the eye have been superseded. We discuss the current indications, contraindications, techniques and complications encountered in pulsed Nd-YAG laser surgery of the anterior segment. 相似文献
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目的:定性及定量观察联合绿激光及Nd:YAG激光周边虹膜切开术后的角膜内皮,并研究此术式对角膜内皮的影响。方法:对19例36眼闭角型青光眼患者,先用绿激光(半导体泵浦的倍频YAG激光)对虹膜作“蜂巢”状烧灼,然后用Nd:YAG激光切透虹膜。手术前、术后1周及1月分别用接触式角膜内皮镜进行定量定性观察及统计分析,包括角膜内皮细胞、细胞面积、变异系数、六角形细胞百分数。结果:患者均经一次联合激光治疗成功切透虹膜。36眼术前及术后1周、1月角膜内皮细胞密度、平均面积、变异系数、六边形细胞百分数差异均无统计学意义(P>0.05)。结论:联合绿激光及Nd:YAG激光行虹膜周边切开术对角膜内皮细胞无明显损伤,其效果确切且安全。 相似文献
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目的了解急性原发性房角关闭(APAC)对侧眼激光周边虹膜切除术(LPI)后接触性房角关闭的发生率和眼部解剖特征。方法前瞻性研究。选择54例APAC对侧眼没有虹膜前黏连(PAS)的患者作为研究对象,平均年龄(67.1±7.2)岁(54—83岁)。采用超声生物显微镜(UBM)在暗环境下观察LPI后是否发生接触性房角关闭.并比较发生接触性房角关闭与不发生接触性房角关闭患眼的眼压、房角及各项UBM参数,包括房角开放距离。(AOD跏)、房角隐窝面积,。(ARA750)、小梁虹膜夹角(T—I角)、小梁睫状体距离(TCPD)、周边虹膜厚度(IT1)、虹膜悬韧带距离(IZD)、虹膜根部附着位置、中央前房深度(ACD)。对两组数据采用独立样本t检验及两样本秩和检验进行分析。结果LPI后暗环境下UBM检查至少一个象限发生接触性房角关闭的有20例,占37%。反映房角开放程度的指标(AOD500、ARA750、T-I角)和反映睫状体位置的指标(TCPD):接触性房角关闭(+)组小于(-)组(t=11.741、11.089、12.175、4.349,P均〈0.01);反映虹膜形态和位置的指标IT1:接触性房角关闭(+)组大于(-)组(t=-3.300,P=0.002);IZD、虹膜根部附着位置及ACD比较,两组差异无统计学意义(t=-1.880,P=0.066;Z=-1.423,P=0.155;t=0.072,P=0.942)。结论APAC对侧眼LPI后在暗环境下仍有一定比例发生接触性房角关闭,房角窄、睫状体前位、周边虹膜厚是LPI后发生接触性房角关闭的解剖学特点,提示LPI后具有这些解剖特点的APAC患者有可能进展为慢性房角关闭。 相似文献