Research Topics
| Jens DawczynskiSummaryAffiliation: Friedrich Schiller University Country: Germany Publications
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Detail Information
Publications
Simple and objective method for routine detection of the macular pigment xanthophyllDietrich Schweitzer
Augenklinik der Friedrich Schiller Universität Jena, Experimentelle Ophthalmologie Bachstrasse 18 07743 Jena, Germany
J Biomed Opt 15:061714. 2010..610±0.093 ODU) than in healthy subjects (n = 45) (ODx = 0.674±0.098 ODU) (p = 0.00019). No dependence on age was found in the pseudophakic eyes both of healthy subjects and AMD patients...
Advanced glycation end-products in corneas of patients with keratoconusJens Dawczynski
Department of Ophthalmology, Friedrich Schiller University Jena, Bachstrasse 18, 07740 Jena, Germany
Graefes Arch Clin Exp Ophthalmol 240:296-301. 2002..The underlying mechanisms are still not clear. One possible pathway is increased formation and accumulation of advanced glycation end-products (AGEs) in the cornea...
[Selenium and cataract--risk factor or useful dietary supplement?]J Dawczynski
Klinik fur Augenheilkunde, Universitatsklinikum Jena, Bachstrasse 18, 07743 Jena
Klin Monbl Augenheilkd 223:675-80. 2006..Both protective and toxic effects and mechanisms have been postulated in the past. Accordingly, the selenium contents in human lenses and blood sera in different forms of cataract were investigated...
[Histological and immunohistological investigations in human epiretinal membranes]J Dawczynski
Klinik fur Augenheilkunde, Universitatsklinikum Jena, Bachstrasse 18, 07743 Jena
Klin Monbl Augenheilkd 223:687-90. 2006..This study aimed to investigate human epiretinal membranes with the help of different histological and immunohistological methods in order to find new concepts for the development of these membranes...
[Advanced glycation end products and pseudoexfoliation--correlation between clinical outcome and histological findings]J Dawczynski
Klinik fur Augenheilkunde, Universitatsklinikum Jena
Klin Monbl Augenheilkd 223:748-51. 2006..This study investigated for the first time immunohistochemically lens capsules of PXS patients for the AGE carboxymethylysine (CML) and correlated the findings with the clinical outcome of the patients...
Interdisciplinary treatment and ophthalmological findings in Parry-Romberg syndromeJens Dawczynski
Department of Ophthalmology, University Hospital Jena, Jena, Germany
J Craniofac Surg 17:1175-6. 2006..In the presented case of Parry-Romberg syndrome a rare association to ophthalmological involvement could be found. Beside the enophthalmos and eyelid alterations, also a panuveitis with papillitis should be treated by steroid therapy...
Anterior segment optical coherence tomography for evaluation of changes in anterior chamber angle and depth after intraocular lens implantation in eyes with glaucomaJ Dawczynski
Department of Ophthalmology, University Hospital Jena, Jena, Germany
Eur J Ophthalmol 17:363-7. 2007..To examine anterior chamber depth (ACD) and anterior chamber angle (ACA) in patients with glaucoma after cataract extraction with an anterior optical coherence tomography (OCT) system...
[Endothelial dysfunction of central retinal vessels: a prognostic parameter for diabetic retinopathy?]J Dawczynski
Universitats Augenklinik, Klinikum der FSU Jena
Klin Monbl Augenheilkd 224:827-31. 2007..Flicker-induced endothelial NO release may be used as an indicator for endothelial functionality of the central retinal vessels...
[Objective measurement of macular optical density]J Dawczynski
Klinik fur Augenheilkunde, Universitatsklinikum Jena, Bachstrasse 18, Jena
Klin Monbl Augenheilkd 228:57-61. 2011..The 1-wavelength reflection method is used for the newly initiated LUTEGA study. This study will investigate the long-term effects of a fixed lutein/omega-3-fatty acid combination on the optical density in patients with dry AMD...
Determination of absolute size of fundus objectsJens Dawczynski
Department of Ophthalmology, University Hospital Jena, Bachstr 18, 07749 Bachstraße 18, 07740, Jena, Germany
Graefes Arch Clin Exp Ophthalmol 249:381-7. 2011..Creating multiple beam interference fringes on the retina using the "retina fringe projector" (RFP) provides us with a scale which can be used to determine the absolute size of objects at the fundus...
Anterior optical coherence tomography: a non-contact technique for anterior chamber evaluationJens Dawczynski
University Eye Hospital Jena, Bachstrasse 18, 07743, Jena, Germany
Graefes Arch Clin Exp Ophthalmol 245:423-5. 2007..To assess a new non-contact anterior optical coherence tomography (OCT) system for anterior chamber evaluation...
[The aging lens--new concepts for lens aging]J Dawczynski
Klinik fur Augenheilkunde, Universitatsklinikum Jena, Bachstrasse 18, 07743 Jena
Ophthalmologe 103:759-64. 2006..Advanced glycation end-products and their potential inhibition seem to play a key role...
[Unilateral protrusion of the eyeball. A 21-year-old patient with a 3-week painless right-sided protrusion of the eyeball]J Dawczynski
, , Jena
Ophthalmologe 102:86-8. 2005
[Preretinal haemorrhage after vomiting--a case report]Jens Dawczynski
Universitatsklinikum Jena, Klinik fur Augenheilkunde
Klin Monbl Augenheilkd 221:125-7. 2004..There are different therapeutical options for treating early preretinal hemorrhages. Beside surgery and intraocular drug administration some reports have been published using neodymium-YAG laser...
Retinal venous oxygen saturation increases by flicker light stimulationMartin Hammer
Department of Ophthalmology, University of Jena, Jena, Germany
Invest Ophthalmol Vis Sci 52:274-7. 2011..Oxygen supply may be the target of the regulation of retinal blood flow. Thus, the oxygen saturation (SO(2)) in retinal arterioles and venules was investigated along with their diameters...
Abnormal retinal autoregulation is detected by provoked stimulation with flicker light in well-controlled patients with type 1 diabetes without retinopathyAleksandra Mandecka
Department of Internal Medicine III, Friedrich Schiller University, Jena, Germany
Diabetes Res Clin Pract 86:51-5. 2009..We investigated whether dynamic analysis apart from the static one in type 1 diabetic patients without diabetic retinopathy with well-controlled diabetes could lead to additional information regarding retinal autoregulation...
Retinal vessel oxygen saturation under flicker light stimulation in patients with nonproliferative diabetic retinopathyMartin Hammer
Department of Ophthalmology, University of Jena, Jena, Germany
Invest Ophthalmol Vis Sci 53:4063-8. 2012..We investigated the response of retinal vessel diameters and oxygen saturation to flicker light stimulation of neuronal activity in patients with diabetic retinopathy...
Increased levels of advanced glycation end products in human cataractous lensesSybille Franke
Department of Internal Medicine III, Friedrich Schiller University of Jena, 07740 Jena, Germany
J Cataract Refract Surg 29:998-1004. 2003....
Diabetic patients with retinopathy show increased retinal venous oxygen saturationMartin Hammer
Department of Ophthalmology, University of Jena, Bachstr 18, 07740, Jena, Germany
Graefes Arch Clin Exp Ophthalmol 247:1025-30. 2009..Longstanding diabetes mellitus results in a disturbed microcirculation. A new imaging oximeter was used to investigate the effect of this disturbance on retinal vessel oxygen saturation...
[Time-resolved autofluorescence in retinal vascular occlusions]D Schweitzer
Bereich Experimentelle Ophthalmologie, Augenklinik der FSU Jena, Bachstraße 18, Jena, Germany
Ophthalmologe 107:1145-52. 2010..In branch retinal artery occlusion, metabolic changes can be compared with normal tissue...
[Haemoglobin oxygenation of retinal vessels in branch retinal artery occlusions over time and correlation with clinical outcome]S Gehlert
Klinik fur Augenheilkunde, Universitatsklinikum Jena, Jena
Klin Monbl Augenheilkd 227:976-80. 2010..Purpose of these study was the evaluation of a new method for the measurement of haemoglobin oxygenation in retinal vessels. Patients with branch retinal artery occlusion have been measured before and after a rheological therapy...
[Corneal ulcers in systemic autoimmunologic diseases]R Augsten
Klinik fur Augenheilkunde, Universitatsklinikum Jena, Bachstrasse 18, Jena
Klin Monbl Augenheilkd 228:66-9. 2011..Keratolysis is a rare severe complication following systemic autoimmunologic diseases. Despite of complex therapeutic treatments, the prognosis is very poor...
[Subjective sensations after intravitreal injection of bevacizumab]T Ach
Klinik fur Augenheilkunde, Universitatsklinikum Jena
Klin Monbl Augenheilkd 224:180-4. 2007..The effects on subjective sensations are not always correlated with the objective changes...
[Fusarium keratitis]R Augsten
Klinik fur Augenheilkunde, Universitatsklinikum Jena, Bachstrasse 18, 07743, Jena, Deutschland
Ophthalmologe 105:1043-5. 2008..However, the infection progressed (endophthalmitis), and an enucleation was necessary. Despite modern drug therapy and surgical intervention, fungal keratitis can cause an enucleation...
[Comparison of the corneal thickness as measured by Visante anterior segment OCT versus ultrasound technique]K Wildner
Augenklinik, Klinikum der FSU Jena
Klin Monbl Augenheilkd 224:832-6. 2007..Thus, it is necessary to know the exact corneal thickness. A new non-contact technique for measuring the corneal thickness is available with the Visante anterior segment optical coherence tomography (OCT, Zeiss)...
[Listeria monocytogenes endophthalmitis]R Augsten
Klinik für Augenheilkunde der Friedrich Schiller Universität Jena
Klin Monbl Augenheilkd 221:1054-6. 2004..Controversy exists concerning clinical progress and prognosis in this bacterial infection. However, only a few reports about the clinical features have been previously published in the literature...
Advanced glycation end-products in anterior chamber aqueous of cataractous patientsSybille Franke
Department of Internal Medicine IV, University of Jena, Jena, Germany
J Cataract Refract Surg 29:329-35. 2003..All 3 AGEs occurred mainly albumin-bound, providing evidence they may originate from the blood. Further investigation is needed to determine the relevance of aqueous AGEs in cataractogenesis...
Influence of flickering light on the retinal vessels in diabetic patientsAleksandra Mandecka
Department of Internal Medicine III, Friedrich Schiller University, Bachstrasse 18, 07743, Jena, Germany
Diabetes Care 30:3048-52. 2007..The reduction of vasodilation is considered an endothelial dysfunction. We investigated the response of retinal vessels to flickering light in diabetic patients in different stages of diabetic retinopathy...
Photodynamic properties of vital dyes for vitreoretinal surgeryTobias Brockmann
Department of Ophthalmology, Charite University Medicine Berlin, Berlin, Germany
Ophthalmologica 228:234-8. 2012..For this reason, our study provides evidence that intraocular dye concentrations and modern endoillumination systems alone cannot fully prevent ICG photodegradation...
Ultrastructure of the membrana limitans interna after dye-assisted membrane peelingTobias Brockmann
Department of Ophthalmology, Electron Microscopy Center, University Hospital Jena, Jena, Germany
Ophthalmologica 226:228-33. 2011..A possible explanation might be seen in the known photosensitivity of ICG, which induces a stiffening and shrinkage of the ILM but also generates retinal toxic metabolites...
Selenium and zinc in patients with acute and chronic uveitisJ Dawczynski
Department of Ophthalmology, University of Jena, Jena, Germany
Biol Trace Elem Res 113:131-7. 2006..Further studies should investigate possible positive effects of therapeutic selenium and zinc supplementation in patients with chronic, recurrent uveitis...
Increased content of zinc and iron in human cataractous lensesJ Dawczynski
Department of Ophthalmology, University of Jena, Jena, Germany
Biol Trace Elem Res 90:15-23. 2002..These data suggest a possible influence of the lens zinc and iron content on the development of lens opacification. Especially advanced forms of cataract and dark brown colored lenses show significantly increased zinc and iron content...
Developmental aspects of galectin-3 expression in the lensRalf Dahm
Max Planck Institute for Developmental Biology, Tubingen, Germany
Histochem Cell Biol 119:219-26. 2003..The spatiotemporal pattern of galectin-3 distribution during lens development favours a role of this lectin in adhesion processes and in the regulation of programmed organelle elimination during lens cell differentiation...
Methylglyoxal-derived hydroimidazolone advanced glycation end-products of human lens proteinsNaila Ahmed
Department of Biological Sciences, University of Essex, Central Campus, Wivenhoe Park, Colchester, Essex CO4 3SQ, United Kingdom
Invest Ophthalmol Vis Sci 44:5287-92. 2003..These substantial modifications of lens proteins may stimulate further glycation, oxidation, and protein aggregation leading to the formation of cataract...
