Abstract:
PURPOSE:The aim of the present article is to review the methodical and technological development of pars plana vitrectomy. Special attention is drawn to safety, efficiency and functionality of the innovative 25-gauge und 23-gauge vitrectomy systems which are compared to the standard 20-gauge vitrectomy system. This was done based on clinical studies and case reports. METHODS:A literature search was conducted in a cluster of different medical databases (XMedall; XPharmall). Focus of the research was the "development" and "status quo" of pars plana vitrectomy. In particular, clinical studies and case reports dealing with safety and efficiency of 20-, 23- and 25-gauge vitrectomy systems have been evaluated. Only peer-reviewed articles from 1966 until today were investigated. Finally, a descriptive analysis of the relevant studies was made. RESULTS:Both innovative vitrectomy systems are safe and effective and help to reduce operating time. There was no significant difference in postoperative complications following 25-gauge vitrectomy and 20-gauge vitrectomy. 25-gauge instruments, however, show a greater flexibility. For this reason a certain learning curve is required and the range of application is limited. Due to its greater stiffness and larger diameter, the 23-gauge system - while still allowing a transconjunctival access - may overcome the disadvantages of the 25-gauge system. However, the use of silicone oil may lead to leakage of the sclerotomies and thus necessitate additional suturing. CONCLUSION:The use of both innovative vitrectomy systems offers the advantage of a faster and less invasive surgical procedure. However, there are disadvantages which limit the indications for 25-gauge vitrectomy. The 23-gauge vitrectomy may overcome these disadvantages and - due to its wider range of application - may be used instead of conventional 20-gauge vitrectomy in most cases. It may therefore become the new standard for vitrectomy.
journal_name
Klin Monbl Augenheilkdjournal_title
Klinische Monatsblatter fur Augenheilkundeauthors
Augustin AJ,Offermann Idoi
10.1055/s-2007-963518subject
Has Abstractpub_date
2007-09-01 00:00:00pages
707-15issue
9eissn
0023-2165issn
1439-3999journal_volume
224pub_type
杂志文章,评审abstract:BACKGROUND:The successful development of cataract operation and IOL implantation in the last decade has resulted in progressive shortening of the incision length as well as in developing safer and simpler anesthetic techniques. The purpose of the present study was to evaluate whether cataract surgery with scleral incis...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1055/s-2008-1035332
更新日期:1996-12-01 00:00:00
abstract:BACKGROUND:Little is known about how the expression of Ephrin type-A receptor 2 (EphA2) influences cell-cell adhesion, migration, angiogenesis, and the formation of vasculogenic mimicry (VM) channels in uveal melanomas or how this may be related to the rate of metastasis. MATERIAL AND METHODS:Paraffin embedded section...
journal_title:Klinische Monatsblatter fur Augenheilkunde
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journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1027966
更新日期:2009-02-01 00:00:00
abstract::In a series of 6000 cases of pseudophakia following extracapsular cataract extraction and implantation of Simcoe-type posterior chamber lenses, observed for a minimum of 20 months, the incidence of retinal detachment was 21 cases (0.33%). Significant risk factors include male sex (18/21, 82%), high myopia (axial lengt...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
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更新日期:1988-01-01 00:00:00
abstract::In the ERG the b-wave and the oscillatory potentials are reduced or nonrecordable in ischemic retinopathy. The photopic b-wave appeared to be more sensitive than the scotopic b-wave. In the EOG the slow oscillation is reduced. These clinical observations are in accordance with the results of experimental studies in rh...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:
更新日期:1979-03-01 00:00:00
abstract:PURPOSE:The aim of this study was to evaluate tumour regression in a large series of choroidal melanomas, which were treated with three different eye-sparing treatment modalities. PATIENTS AND METHODS:Retrospective review of the treatment results in all eyes with malignant choroidal melanoma, which were treated in the...
journal_title:Klinische Monatsblatter fur Augenheilkunde
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abstract:BACKGROUND:Non-neovascular age-related macular degeneration (AMD) is not yet treatable. This article summarises current clinical research approaches. The reasons for the current lack of success are analysed. METHODS:Literature and databank search. RESULTS:The number of therapeutic approaches and mechanisms is limited...
journal_title:Klinische Monatsblatter fur Augenheilkunde
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abstract::The Frequency of the Pseudoexfoliation-Syndrom (= PES) was investigated about two months in a prospective study of 1069 patients in the university eye hospital of Zurich. 7.35% of these patients had a PES with or without glaucoma. Among the clinic patients there were 9.9% and among the policlinic patients 6.26%. All o...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1045974
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abstract::Using mobile OCT equipment and remote ophthalmological diagnosis of n = 1538 diabetics in 17 diabetes practices in Germany, we found diabetic macular edema in 10.1% of the patients and retinal bleedings or microaneurysms in 15.6%. In 1.62% of the diabetics examined, the size of the edema was > 0.4 mm², in 7% the retin...
journal_title:Klinische Monatsblatter fur Augenheilkunde
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更新日期:2020-11-01 00:00:00
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journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 临床试验,杂志文章
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更新日期:2008-05-01 00:00:00
abstract::A total of 369 ophthalmological practices were asked to report the number of patients seen within one test week who drove their cars but did not satisfy minimum legal requirements for diurnal visual acuity applicable for applicants for a West German Class 3 driver's license. There were 471 such patients. From this num...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1054574
更新日期:1984-08-01 00:00:00
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journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1057566
更新日期:1980-05-01 00:00:00
abstract::After some basic remarks about the physiological adhesions of the vitreous body to its surrounding structures in the anterior part of the eye (lens, ciliary body, pars plana) and the posterior part of the eye (macular, optic disc) the general history of bleeding in the vitreous body and the different possibilities of ...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:
更新日期:1976-10-01 00:00:00
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journal_title:Klinische Monatsblatter fur Augenheilkunde
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journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:
更新日期:1979-02-01 00:00:00
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abstract::Topical administration of Isoproterenol reduces the intraocular pressure in glaucomatous eyes, but produces systemic side-effects (tachycardia arterial hypotension) that make its clinical use unadvisable. Such side-effects are significant when the concentration of Isoproterenol is 4 and 5%. Pre-treatment of the contra...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:
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pub_type: 杂志文章
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journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
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更新日期:1981-07-01 00:00:00
abstract::The relevance of fungal contamination of soft contact lenses is demonstrated by own clinical observations in 25 cases. It can be shown by surface-microscopical, histological and mycological analysis, that various fungi can not only grow on the surface of HEMA-lenses, but can also invade the material. The efficacy of c...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:
更新日期:1978-11-01 00:00:00
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journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
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更新日期:1987-06-01 00:00:00
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journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 临床试验,杂志文章
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更新日期:2010-06-01 00:00:00
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journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
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更新日期:1994-08-01 00:00:00
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journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
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更新日期:1994-02-01 00:00:00
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journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
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更新日期:2014-08-01 00:00:00
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journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章,评审
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更新日期:2012-12-01 00:00:00
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journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:
更新日期:1979-06-01 00:00:00
abstract::Basing on the bipolar-coaxial wetfield-diathermy, introduced in microsurgery 1974 by the author, an anterior capsulotomy instrument using a modulated RF-current was published in 1984. In the meantime several patients have been operated successfully with this technique. However, further experimental studies allowed a r...
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pub_type: 杂志文章
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更新日期:1992-05-01 00:00:00