Abstract:
PURPOSE:We report the clinical, morphological, and ultrastructural findings of 13 consecutively explanted opacified Hydroview(R) (hydrogel) intraocular lenses (IOLs). Our purpose was to provide a comprehensive account on the possible factors involved in late postoperative opacification of these IOLs. PATIENTS AND METHODS:Thirteen consecutive opacified hydrogel IOLs (Hydroview H 60 M, Bausch & Lomb) were explanted due to the significant visual impairment they caused. The IOLs underwent macroscopical examination, transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and electrophoresis for protein detection. Three unused control Hydroview IOLs served for comparison. RESULTS:Macroscopical examination showed a diffuse or localized grey-whitish opacification within the IOL optic. TEM confirmed the presence of lesions inside the optic in all the explanted IOLs and revealed 3 patterns of deep deposits: a) diffuse, thick, granular, electron-dense ones; b) small, thin, lattice-like ones, with prominent electron-lucent areas; and c) elongated electron-dense formations surrounded by electron-lucent halos. SEM showed surface deposits on four IOLs. EDS revealed oxygen and carbon in all IOLs and documented calcium, phosphorus, silicon and/or iron in the deposits. Two of the patients with iron in their IOLs had eye surgery prior to their phacoemulsification. Iron correlated well with the second TEM pattern of deep lesions, whereas calcium with the third TEM pattern. No protein bands were detected on electrophoresis. Control lenses did not show any ultrastructural or chemical abnormality. CONCLUSIONS:The present study supports the presence of chemical alterations inside the polymer of the optic in late postoperative opacification of Hydroview IOLs. This opacification does not follow a unique pathway but may present under different ultrastructular patterns depending on the responsible factors. Mechanical stress during surgery may initiate a sequence of events where ions such as calcium, phosphorus, silicon, and/or iron, participate in a biochemical cascade that leads to gradual alteration of the polymer network. Intraocular inflammation due to previous operation may be a factor inducing opacification through increase of iron-binding capacity in the aqueous humour. Calcification accounts only partially for the opacification noted in this type of IOL.
journal_name
Klin Monbl Augenheilkdjournal_title
Klinische Monatsblatter fur Augenheilkundeauthors
Katsimpris JM,Theoulakis PE,Kouzi-Koliakos K,Pavlidou E,Petropoulos IK,Koliakos G,Vouroutzis N,Konstas AGdoi
10.1055/s-0028-1109319subject
Has Abstractpub_date
2009-04-01 00:00:00pages
264-71issue
4eissn
0023-2165issn
1439-3999journal_volume
226pub_type
临床试验,杂志文章abstract:BACKGROUND:The application of anti fibroses agents during glaucoma surgery leads to more satisfactory results with lower i.o. pressure, yet eliciting complications in wound healing, avascular filtering blebs and frequent chronic hypotonias. In patients with lower risk for failure a reduction of concentration and applic...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1035446
更新日期:1995-05-01 00:00:00
abstract::A solar eclipse is an impressive natural phenomenon that was last experienced in Europe in 2006. Last year, on March 20th 2015, a solar eclipse was visible in much of Europe. Solar retinopathy is a recognised potentially sight threatening condition that has been associated with direct or unprotected sun gazing. Public...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-0042-111727
更新日期:2017-06-01 00:00:00
abstract::1. The biosynthesis of melatonin was investigated in retinaextracts of bovine eyes in dependence of light adaptation of the animals. S-adenososyl (Methyl-14C) methionin and acetylserotonin were used as substrates. A higher melatonin-biosynthesis was found in the retina from animals which were adapted to lower illumina...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:
更新日期:1975-07-01 00:00:00
abstract::Real-time tracking of eye movements offers a solution to various problems in ophthalmology. Different types of image analysis and processing techniques is discussed and an advanced pattern recognition eye-tracking system has been developed; it can track a retinal target (in real time) under conditions typical for opht...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1050488
更新日期:1987-08-01 00:00:00
abstract::A brother and a sister with DIDMOAD syndrome (diabetes insipidus, diabetes mellitus, optic atrophy, deafness, etc.) are described. The 15-year-old girl was suffering from severe optic atrophy, severe sensorineural hearing loss but only slight diabetic retinopathy. The 16-year-old boy presented with symptoms which were...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1054578
更新日期:1984-08-01 00:00:00
abstract::Recognizing congenital syphilis in pediatric patients is of utmost importance with regard to therapy. The case of a 5-year-old girl with salt and pepper fundus demonstrates the importance of a thorough family history which led towards the diagnosis of congenital syphilis. This paper stresses the importance of family h...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1045820
更新日期:1992-05-01 00:00:00
abstract::Binocular perimetry with Aulhorn's Phase difference haploscope is described. Of 62 patients with primary micro-squint, 21 patients showed no scotoma, 15 patients showed a fixation or zero point scotoma of 0.5-1 degrees, 26 patients showed a larger scotoma (average: 3.7 degrees). In addition, 15 patients with larger an...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:
更新日期:1978-10-01 00:00:00
abstract:BACKGROUND:Epiphora is the result of hypersecretion or reduced tear outflow because of relative or absolute obstruction of the lacrimal system. For the treatment a specific surgical procedure is usually required. Herein we present the subjective and objective findings of 243 consecutive patients with non-irritative ind...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-0029-1245455
更新日期:2010-11-01 00:00:00
abstract::In facial hemiatrophy two different types are known: the progressive acquired type, which is relatively more common, and the rare congenital non progressive form. Two children--both with congenital facial hemiatrophy--are presented, both showed a (horizontally and vertically) smaller lid fissure and antimongoloid conf...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1045880
更新日期:1992-08-01 00:00:00
abstract::The present report describes clinical findings in 13 patients with Sturge-Weber syndrome, 11 of whom had glaucoma (22-52 mm Hg). The episcleral venous pressure (EVP) was high in all glaucomatous eyes (14-23 mm Hg). Tonography showed a marked decrease in outflow facility. The observations suggest that glaucoma in Sturg...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1050508
更新日期:1987-10-01 00:00:00
abstract:BACKGROUND:Computer-controlled video keratoscopy is being employed ever more frequently and for various indications. PATIENTS:We have studied the effects of high-viscosity and low-viscosity tear substitutes on the corneal topography, one and five minutes after application to 14 normal eyes of 7 subjects, and compared ...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1035260
更新日期:1996-06-01 00:00:00
abstract::Clinico-virologic investigations and the availability of the new antiviral drug Acyclovir have changed our therapeutic approach to deep herpetic diseases. Treatment of the symptoms alone with steroids should now be avoided. Basic treatment should consist of optimal dosages of Acyclovir. However, additional steroid the...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1050949
更新日期:1985-06-01 00:00:00
abstract::We report on a 35 year old patient suffering from heterochromia complicata Fuchs with a mature cataract. Multiple small whitish-yellowish crystal-lines on the iris at the 7 and 12 o'clock position were interpreted as Russell bodies and correlated with an elevated concentration of 7.2 mg/dl IgG in the aqueous humor ana...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1045953
更新日期:1991-03-01 00:00:00
abstract:BACKGROUND:Lymphoma of the conjunctiva as part of a systemic disease is rare. The follicular appearance of the lymphocyte hyperplasia may mimic the clinical picture of infectious or allergic conjunctivitis. We report on a case of marked chronic follicular conjunctivitis, finally diagnosed as mantle cell lymphoma. HIST...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2004-812865
更新日期:2004-05-01 00:00:00
abstract::In 1876 A. Weber introduced chemically from P. jaborandi isolated Pilocarpium muriaticum into the ophthalmological therapy. One year later it was used as a local drug to lower the intraocular pressure in glaucoma and replaced in the following years the extract of Calabar bean (Eserine). Clinical and pharmacological da...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 历史文章,杂志文章
doi:
更新日期:1976-11-01 00:00:00
abstract::Hereditary optic nerve disorders are rare. For ophthalmologists, Leber's hereditary optic neuropathy (LHON) and autosomal dominant optic atrophy (ADOA) are of particular relevance. LHON and ADOA are diseases of the retinal ganglion cells and are caused by mitchochondrial dysfunction. LHON is based on mutations of the ...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章,评审
doi:10.1055/a-0583-6290
更新日期:2018-06-01 00:00:00
abstract:BACKGROUND:Since 1968, when the first commercial squash center has opened in Hamburg, squash has become very popular in Germany. Squash is played between two players in a closed court using racquets and a hollow rubber ball which could reach a maximum speed up to 225 km/h. According observations of English and American...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1045667
更新日期:1993-09-01 00:00:00
abstract::Silicon lenses, noted for their flexible elasticity, were submitted for patent registration prior to HEMA lenses, and before practical experience was available. Favorable clinical trials remained undone for a long time. After preclinical tests with additively moistened silicons and a new hydrophilic coating, clinical ...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1046016
更新日期:1991-05-01 00:00:00
abstract::According to the Lincoff's procedure, a cryoprobe is used for the localization of retinal holes. A cryo-marker developed for Keeler-cryoprobes simplifies the marking of the scleral impression of the cryoprobe, which is often invisible after thawing. The cryo-marker is fixed on the cryoprobe before cryotherapy. During ...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1057317
更新日期:1981-10-01 00:00:00
abstract::Thirty patients with ocular hypertension or open-angle glaucoma were tested to see if, and to what extent, guanethidine/dipivefrin and pilocarpine produced a supplementary reduction in intraocular pressure. An equally marked additional lowering of pressure was achieved when patients who had been given guanethidine/dip...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1050337
更新日期:1987-02-01 00:00:00
abstract::The small degree of morbidity and a better postoperative visual acuity are the advantages of pneumatic retinopexy in comparison to encircling procedures in the treatment of retinal detachment. The injection of air or gas into the vitreous cavity can theoretically induce a cataract postoperatively. Two months after pne...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1046024
更新日期:1991-06-01 00:00:00
abstract::The amphiphilic surfactant proteins B (SP-B) and C (SP-C) are tightly bound to phospholipids. These proteins play important roles in maintaining the surface tension-lowering properties of pulmonary surfactant. Surfactant protein A (SP-A) and D (SP-D) are hydrophilic and are thought to have a role in recycling surfacta...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章,评审
doi:10.1055/s-0029-1245609
更新日期:2010-11-01 00:00:00
abstract:BACKGROUND:The endothelial cell count after phakoemulsification is a sensitive parameter to compare different phakoemulsification techniques. PATIENTS AND METHOD:In a prospective study 30 patients in each group were operated upon the "Reversed Tip and Snip" and with the "Divide and Conquer"-Technique. The corneal endo...
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-2008-1035021
更新日期:1997-02-01 00:00:00
abstract::Optical coherence tomography (OCT) enables noninvasive high-resolution 3D imaging of the human retina, and thus plays a fundamental role in ophthalmology. Via OCT examination, even subtle retinal changes can be captured, which occur in very early stages of different diseases (e.g., glaucoma, diabetes mellitus, or age-...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-0043-121705
更新日期:2017-12-01 00:00:00
abstract::No difference in the retinal acetylserotonin-methyltransferase was found in two groups of quail which were exposed to irradiation of 0.1 W/m2 with green and blue light respectively for 1 hour. Decreased retinal enzyme activities (isoelectric point pH 5.0) were observed in response to exposure to green and UVA light co...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1050633
更新日期:1986-04-01 00:00:00
abstract::This review article focusses on the management of enhancements after corneal refractive laser surgery. Fundamental issues regarding enhancement embrace identification of the underlying reason for postoperative ametropia, assurance of stability of refraction, type of primary refractive laser treatment and thorough eval...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章,评审
doi:10.1055/a-1148-2744
更新日期:2020-07-01 00:00:00
abstract::1894 Richard Greeff, a young scientist at the University of Berlin, translated the book "The retina of vertebrates" of Santiago Ramón y Cajal into German. Greeff himself had already applied the Golgi-Cajal-Chromic-Silver dye to the retina and was enthusiastic about the results of Cajal. He interrupted his own investig...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 传,历史文章,杂志文章
doi:10.1055/s-2008-1045547
更新日期:1994-12-01 00:00:00
abstract::The unusual long and atypical clinical course of a prominent black choroidal tumor is presented. It was stationary for decades and became symptomatic for many years. The histologic findings post mortem showed a choroidal nervus with focal malignant change. Its symptoms were obviously caused by subretinal vascularized ...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1046005
更新日期:1991-05-01 00:00:00
abstract:BACKGROUND:The Color Vision Meter 712 (CVM) is a new automatic computerized anomaloscope relying on both the Rayleigh and the Moreland equation. In the present study the diagnostic value of Color Vision Meter was examined in glaucoma for the first time and was compared with the Farnsworth 100 hue test. PATIENTS AND ME...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1035512
更新日期:1994-03-01 00:00:00
abstract:PURPOSE:Photodynamic therapy provides occlusion of choroidal neovascularization by intravascular endothelial damage. The photodynamic approach offers the potential to occlude choroidal neovascularization selectively without altering adjacent sensory retina and therefore to preserve visual acuity. To determine the selec...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2000-10537
更新日期:2000-03-01 00:00:00