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1.
von Hippel Lindau综合征   总被引:2,自引:0,他引:2  
vonHippelLindau综合征是一种侵犯机体多个系统,具有肿瘤特点的遗传性疾病。由于视网膜血管瘤常为其最早发生也最为常见的临床表现,因此,该病与眼科的关系极为密切。近十几年,由于分子遗传学和影像诊断学的飞速发展,人们对本病的发病机制、临床病程,特别是可疑病例的筛选和诊断等方面,有了崭新的认识。本文重点从眼科角度作一综述。  相似文献   

2.

Purpose

The predictability of laser-assisted in situ keratomileusis (LASIK) can be improved by adjustments to treatment nomograms. The aim of this research was to clinically evaluate two different methods of nomogram optimization, to compare them with a reference and to analyze the effectiveness of individual cylinder modifications on the distribution of the postoperative spherical equivalent.

Methods

Patients with myopic astigmatism formed three patient collectives and were treated consecutively with LASIK. In total 146 Femto-LASIK procedures were performed with the VISX S 4 excimer laser and the Intralase FS 60 Femto laser. Patients in the first collective (group A) received identical spherical nomogram adjustments, independent of the preoperative refraction. Individual adjustments of the treatment sphere and treatment cylinder in relation to the preoperative manifest refraction, were used for the treatment of a second patient collective (group B). Patients in a third collective were treated with the internal standard nomograms of the excimer laser without further modifications (reference group). The 3 months results were used for the outcome analysis.

Results

Both methods of nomogram adjustment significantly improved the predictability of the postoperative spherical equivalent. Of the attempted spherical adjustment 82% was achieved by group A and 70% by group B. The postoperative astigmatism and spherical equivalent did not show a significant improvement due to the individual adjustments of the treatment cylinder.

Conclusion

A spherical modification of the treatment sphere was effective in the optimization of refractive outcomes for myopic astigmatic patients undergoing Femto-LASIK. The more demanding individual treatment adjustments with cylinder optimizations were safe but not capable of further improvement of the postoperative spherical equivalent distribution.  相似文献   

3.
von Hippel—Lindau(VHL)病是一种常染色体显性遗传的良恶性肿瘤综合征,眼部特征是视网膜毛细血管瘤。患者常因眼底血管瘤病变到眼科首诊而发现患有VHL病。该病在早期诊断和治疗方面的进展包括:(1)诊断方面,在原有血管造影、超声波、CT和MRI检查的基础上,彩色多普勒血流成像和激光断层扫描成为新兴的眼科检查技术,基因检测也成为早期诊断方法,进一步提高了确诊率。(2)治疗方面,早期观察随访,根据血管瘤的特点选择激光光凝、冷冻疗法、放射治疗、玻璃体视网膜手术等治疗手段。(3)经瞳孔温热疗法、光动力疗法、血管内皮生长因子受体抑制剂及缺氧诱导因子抑制剂等治疗VHL病已处于临床研究阶段,基因治疗也在初步探索中。  相似文献   

4.

Introduction

Counterfeit drugs are often ineffective and are considered a problem with an immense risk potential especially in the treatment of infectious diseases. Emerging and developing countries are particularly affected. Little is known about the extent of counterfeit antibiotic drugs used in eye care. In the present study we investigated antibiotic eye drops purchased in two African countries with respect to the active substance and its concentration in the sample.

Methods

A total of 33 antibiotic eye drops purchased in Kenya and the Democratic Republic of Congo were tested. The bottles were labeled to contain one of the following substances: the quinolones ciprofloxacin, levofloxacin and ofloxacin and the aminoglycosides gentamicin and tobramycin. Imported quality products as well as cheaper generic drugs were tested. Fluoroquinolones were determined by high pressure liquid chromatography (HPLC) and quantified by fluorescence measurement and aminoglycosides were tested by using a fluorescence polarization immunoassay.

Results

All samples were found to contain the declared drug. Nine samples (27%) showed an under-concentration by 10% or less and ten (30%) showed an increased concentration of 10% or more than indicated on the label. 75% of the original drugs but only 12% of the generic drugs had measured concentrations within the standard advisory ranges of ±5% from the nominal value.

Conclusion

Our results provide no evidence for significant criminal counterfeiting of eye drops in the studied countries. The frequent deviation from the stated concentration in the generic samples is cause for concern and justifies further investigation.  相似文献   

5.
Salzmann’s nodules comprise a heterogeneous group of greyish superficial corneal opacities. A substantial percentage is most likely caused by dystrophies. This could explain the recurrences after surgical removal. The Eye Center of the University Hospital Freiburg has been using mitomycin C intraoperatively during surgical removal of Salzmann’s nodules since 2007 to prevent recurrences. We recently performed an uncontrolled prospective trial to evaluate this approach and also reviewed the literature. Worldwide, a total of 38 eyes have been treated with mitomycin C during surgery for Salzmann’s nodules. No recurrences have been reported so far with follow-up exceeding at least 2 years in almost all eyes. No severe side effects have been observed to date. We therefore think that mitomycin C during surgery for Salzmann’s nodules is advisable despite the lack of evidence from a randomized clinical trial. However, all patients must consent to the off label use of mitomycin C.  相似文献   

6.
Zusammenfassung In der vorliegenden Arbeit wurde gezeigt, daß Alpha-Chymotrypsin die Heilung experimentell gesetzter Endothelwunden bei jungen und alten Kaninchen nicht beeinflußt.Mit 4 TextabbildungenAuszugsweise vorgetragen anläßlich der Jahreshauptversammlung der Österreichischen Ophthalmologischen Gesellschaft in Innsbruck, Mai 1963.  相似文献   

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例1 患者女,21岁.2008年12月22日因"左眼视物变形、变小20d"来我院眼科就诊.患者曾于2004年11月因头痛、恶心、呕吐在当地医院行"小脑占位手术";2007年9月13日因眩晕呕吐1个月,入我院脑外科住院治疗,MRI诊断:右侧小脑半球病变,多系血管母细胞瘤;后行"有小脑血管母细胞瘤切除术".病理诊断:血管母细胞瘤.  相似文献   

9.
Zusammenfassung Bericht über eine neue Methode zur cytologischen Kammerwasseruntersuchung: Vitalfluochromierung mit Acridin-Orange (Endkonzentration 120.000), mikroskopische Untersuchung mit Dunkelfeldkondensor im blaugefilterten Quecksilberlicht ohne Ocularsperrfilter. Strahlenschäden der Zellen werden weitgehend vermieden; die photographischen Belichtungszeiten können bis auf 2 sec reduziert werden, so daß Aufnahmen lebender Zellen möglich werden.Der Farbstoff fluoresceiert je nach Konzentration grün - gelb - orange- rot; seine Konzentration in verschiedenen Zellteilen ist vom Fermentgehalt und damit von der Vitalität abhängig. Die besprochende Methode stellt einen Schritt zur cytochemischen Untersuchung dar. Zur Differenzierung und Vitalitätsbeurteilung von Kammerwasserzellen erscheint sie geeignet.Untersuchungen mit Unterstützung der Friedrich Baur-Stiftung.  相似文献   

10.
例1 患者女,21岁.2008年12月22日因"左眼视物变形、变小20d"来我院眼科就诊.患者曾于2004年11月因头痛、恶心、呕吐在当地医院行"小脑占位手术";2007年9月13日因眩晕呕吐1个月,入我院脑外科住院治疗,MRI诊断:右侧小脑半球病变,多系血管母细胞瘤;后行"有小脑血管母细胞瘤切除术".病理诊断:血管母细胞瘤.  相似文献   

11.
例1 患者女,21岁.2008年12月22日因"左眼视物变形、变小20d"来我院眼科就诊.患者曾于2004年11月因头痛、恶心、呕吐在当地医院行"小脑占位手术";2007年9月13日因眩晕呕吐1个月,入我院脑外科住院治疗,MRI诊断:右侧小脑半球病变,多系血管母细胞瘤;后行"有小脑血管母细胞瘤切除术".病理诊断:血管母细胞瘤.  相似文献   

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13.
In 5-15% of individuals suffering essential blepharospasm, treatment with botulinum toxin is insufficient. In these cases the following measures can be applied: increase the dose, increase or vary the injection sites, change the botulinum toxin medication, use additional oral medication, or perform surgery. Certain measures can also be carried out by the patient. In cases of hemifacial spasm, inadequate results of botulinum toxin injections are even more unusual. But for these cases, additional oral medication or the neurosurgical Janetta operation can be used.  相似文献   

14.
患者女,15岁,右眼视力逐渐下降并外斜5个月,右眼突发性胀痛,右侧头痛,呕吐1天,于1998年2月3日入院。患者曾在外院诊断为视网膜母细胞瘤,入院前1个月在其他医院行眼眶CT扫描,提示:Coats病可能性大。入院时全身检查未见异常,B型超声检查:肝、...  相似文献   

15.
本文报道von Hippel-Lindau病1家系,该家系有2人,3只眼眼底查到孪生血管(twin vessels)。 (中华眼底病杂志,1992,8:173-174)  相似文献   

16.
假性vonGraef征一例许静许江涛假性vonGraef征是一种极为罕见的临床现象,国外Grower、Fuchs等先后报告过10余例,国内张承芬[1]、杜松林[2]也有报道。我科今年收治1例,报告如下。患者非×,男性,19岁。3月前左眼曾被篮球撞击,...  相似文献   

17.
Zusammenfassung Wir untersuchten die Bedingungen, unter denen sich reversible Hemmer der Cholinesterase (Prostigmin) und irreversible Hemmer (Mintacol) in ihrer Wirkung gegenseitig beeinträchtigen oder unterstützen stützen mit der manometrischen Methode nachAmmon an Homogenat von Rinderiris. Prostigmin schützte das Ferment vor der Einwirkung des Mintacol, wenn Iris mit dem Hemmer inkubiert und Acetylcholin später erst hinzugefügt wurde. Umgekehrt fanden wir eine gegenseitige Verstärkung der Wirkung beider Hemmer, wenn Acetylcholin gleichzeitig mit ihnen zur Iris hinzugegeben wurde, solange wie das Mintacol wegen der Behinderung durch Acetylcholin seine volle Wirksamkeit noch nicht erreicht hatte. Die klinische Beobachtung, daß eine gleichzeitige Anwendung von verschiedenen Miotica den intraocularen Druck nicht weniger und manchmal sogar stärker senkt als jedes Medikament einzeln, wird durch diese fermentchemische Untersuchung gestützt.Mit 5 Textabbildungen  相似文献   

18.

Standespolitik

Bericht von der Pressekonferenz der ?OG Früherkennung bei Makula-Degeneration  相似文献   

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