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Wiedemann P. Classification of diabetic retinopathy: from screening to diagnosis. Acta Ophthalmol 2015. [DOI: 10.1111/j.1755-3768.2015.0078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Schwamb S, Hafner M, Hopf C, Wiedemann P. „Intact Cell”︁ MALDI-TOF MS: Monitoring von Zellstress in CHO-Zellkultivierungsansätzen. CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201450223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Unterlauft JD, Yafai Y, Wiedemann P. Changes of anterior chamber architecture induced by laser peripheral iridotomy in acute angle closure crisis. Int Ophthalmol 2014; 35:549-56. [DOI: 10.1007/s10792-014-9982-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Accepted: 07/20/2014] [Indexed: 11/28/2022]
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Barbu C, Rasche W, Wiedemann P, Dawczynski J, Unterlauft J. Pattern-Laser-Trabekuloplastik und Argon-Laser-Trabekuloplastik zur Glaukombehandlung. Ophthalmologe 2014; 111:948-53. [DOI: 10.1007/s00347-014-3036-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Girbardt C, Wiedemann P, Nestler A. [Complications from an intraocular glass fibre 33 years after trauma]. Klin Monbl Augenheilkd 2014; 231:926. [PMID: 24901420 DOI: 10.1055/s-0034-1368404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Unterlauft JD, Wiedemann P, Meier P. [Firework-related eye trauma from 2005 to 2013]. Klin Monbl Augenheilkd 2014; 231:915-20. [PMID: 24810620 DOI: 10.1055/s-0034-1368376] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
PURPOSE Fireworks combusted during New Year's Eve festivities can cause different eye traumas which often need complex reconstructive surgery. It was our aim to systematically analyse these eye trauma cases which were treated at our clinic during the last eight years. MATERIALS AND METHODS Age, gender, side, trauma mechanism, treatment methods and outcome were analysed for all eye trauma cases caused by fireworks during the New Year's Eve celebrations from 2006 to 2013. For statistical analysis all trauma cases were divided into two groups of major and non-major eye trauma. RESULTS The total number of patients treated was 122 (28 women, 94 men, mean age 26.2±13.0 years) with 137 traumatised eyes (77 right, 60 left). 24.6% of patients were ≤18 years of age. 76.2% were bystanders. 50 eyes from 46 patients (37.7%) suffered from major eye trauma. 26 patients (21.3%) were hospitalised. 8 eyes (5.8%) suffered from a penetrating injury or globe rupture and underwent primary reconstructive surgery. Further 16 eyes (11.7%) suffered from major eye trauma without open globe injury. In the aftermath 11 eyes (8.0%) went blind (visual acuity<1/50). Gender, side and role of the patient were not significantly different between the two groups. Mean age was significantly higher in the major eye trauma group (p=0.01). CONCLUSION Young male bystanders have a high risk for suffering from eye trauma caused by fireworks. However older patients suffer from major eye trauma more often. More education and prophylaxis of eye trauma caused by fireworks is desirable.
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Wahl V, Vogler S, Grosche A, Pannicke T, Ueffing M, Wiedemann P, Reichenbach A, Hauck S, Bringmann A. Osteopontin inhibits osmotic swelling of retinal glial (Müller) cells by inducing release of VEGF. Neuroscience 2013; 246:59-72. [DOI: 10.1016/j.neuroscience.2013.04.045] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Revised: 04/15/2013] [Accepted: 04/17/2013] [Indexed: 12/19/2022]
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Abstract
PURPOSE In acute angle-closure glaucoma a laser iridotomy (IO) is performed to balance the intraocular pressure between the anterior and posterior chambers. The changes induced in the anterior chamber architecture were analyzed using Scheimpflug photography. MATERIAL AND METHODS Scheimpflug photography was performed in eyes with acute angle closure and in the contralateral eyes before and after IO. RESULTS In a group of 10 patients (8♀, 2♂, average age71.2 ± 5.3 years) 10 eyes with acute angle closure and 10 contralateral eyes were analyzed. The anterior chamber depth, central corneal thickness and anterior chamber angle did not change significantly after IO. The mean anterior chamber volume showed a statistically significant increase in the 10 eyes with acute angle closure and in the 10 contralateral eyes. CONCLUSION Anterior chamber volume increases due to IO but not anterior chamber depth, central corneal thickness and anterior chamber angle in eyes with acute angle closure.
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Rehak M, Spies E, Scholz M, Wiedemann P. Behandlung der Patienten mit einem Venenastverschluss in Abhängigkeit von der Verschlussdauer. Ophthalmologe 2012; 110:966-74. [DOI: 10.1007/s00347-012-2723-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Girbardt C, Meier P, Wiedemann P. [Reverse pupillary block following anterior crystalline lens dislocation]. Klin Monbl Augenheilkd 2012; 229:1233-4. [PMID: 23172647 DOI: 10.1055/s-0032-1327958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Linnertz R, Wurm A, Pannicke T, Krügel K, Hollborn M, Härtig W, Iandiev I, Wiedemann P, Reichenbach A, Bringmann A. Activation of voltage-gated Na+ and Ca2+ channels is required for glutamate release from retinal glial cells implicated in cell volume regulation. Neuroscience 2011; 188:23-34. [DOI: 10.1016/j.neuroscience.2011.04.058] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2011] [Revised: 04/20/2011] [Accepted: 04/29/2011] [Indexed: 10/18/2022]
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Abstract
Retinal vein occlusion (RVO) is the most common retinal vascular disease after diabetic retinopathy. Owing to its multifactorial nature, however, management of this condition remains a challenge. Of the two main types of RVO, branch retinal vein occlusion (BRVO) is more prevalent than central retinal vein occlusion (CRVO). Most patients develop the disease at an elderly age, and more than half of them have associated systemic disorders (e.g. hypertension, hyperlipidemia and/or diabetes mellitus). There is no evidence to suggest routine testing for heritable thrombophilias in patients with RVO. The main cause of the visual impairment is macular edema, while neovascularization of the retina and optic disc are the most serious complications leading to vitreous hemorrhage, retinal detachment and neovascular glaucoma. Macular grid laser photocoagulation is an effective treatment for macular edema in patients with BRVO and a visual acuity of 20/40 or less. Other treatment options for reducing the edema are intravitreal steroids, anti-VEGF drugs and vitrectomy. The recently introduced intravitreal application of steroids and anti-VEGF drugs may prove to be a better approach for improving visual acuity. Finally, scatter panretinal laserphotocoagulation can effectively treat neovascularization and its secondary complications.
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Iandiev I, Bringmann A, Wiedemann P. Proliferative Vitreoretinopathie – Pathogenese und Therapie. Klin Monbl Augenheilkd 2010; 227:168-74. [DOI: 10.1055/s-0029-1245300] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Krügel K, Wurm A, Linnertz R, Pannicke T, Wiedemann P, Reichenbach A, Bringmann A. Erythropoietin inhibits osmotic swelling of retinal glial cells by Janus kinase- and extracellular signal-regulated kinases1/2-mediated release of vascular endothelial growth factor. Neuroscience 2010; 165:1147-58. [DOI: 10.1016/j.neuroscience.2009.11.035] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2009] [Revised: 11/11/2009] [Accepted: 11/12/2009] [Indexed: 11/24/2022]
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Börner F, Greinert R, Schütz H, Wiedemann P. [UV risk perception by the general public: results of a representative questionnaire in Germany]. DAS GESUNDHEITSWESEN 2010; 72:e89-97. [PMID: 20049688 DOI: 10.1055/s-0029-1242792] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
AIM OF THE STUDY For public health promotion purposes it is important to know how the general public perceives the risk factor "UV exposure" and how UV risk perception is connected to health-related attitudes and beliefs. The aim of the study was to collect representative data about UV risk perception in Germany. METHODS A representative telephone survey using the ADM design was carried out among 1 501 German residents between May and July 2007. Variables related to UV risk knowledge, relevance of risk topics in every-day thinking and risk estimates were investigated. Data regarding a subjective benefit evaluation of UV exposition was also collected. RESULTS The results suggest no essential gaps in the general knowledge about UV risks, except for the underestimation of UV-related cataracts. The respondents thought it extremely likely that UV exposure would cause health damage such as skin cancer, photoaging or sun burns. People were asked to report how often they had thought about a number of health risks including UV risks in the last two weeks. It was established that UV risks are present but not dominant in people's every-day thinking. Along with it, the risk evaluation proves to be rather moderate. The mean value for respondents' perceived personal risk is M=5.1, in the midsection of the given 10-point scale. The results show that perceived personal risk is not influenced by the serious UV health risks such as cancer or cataracts. The results also indicate that UV benefit and UV risk perception are not strongly related to one another. CONCLUSIONS In summary, participants' perception and assessment of the various health risks of UV exposure seem to be realistic, but the UV risk assessment it is not related to the perception of personal risk. One must therefore assume that UV health risk information and education campaigns do not necessarily lead to a change in the perception of personal UV risk. Rather than addressing primarily risk knowledge, UV risk communication should focus more on motivational aspects and consider the role of UV benefit perception.
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Lange J, Yafai Y, Reichenbach A, Wiedemann P, Eichler W. Regulation der Produktion und Freisetzung des Pigment Epithelium-Derived Factors durch Müllerzellen unter Hypoxie. Klin Monbl Augenheilkd 2009. [DOI: 10.1055/s-0029-1243561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Wiedemann P. Degenerative Myopie. Klin Monbl Augenheilkd 2009. [DOI: 10.1055/s-0029-1243534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Wiedemann P. Chirurgie des diabetischen Makulaödems. Klin Monbl Augenheilkd 2009. [DOI: 10.1055/s-0029-1242958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Meier P, Sterker I, Tegetmeyer H, Wiedemann P. 23-Gauge-Lentektomie zur operativen Behandlung einer angeborenen Katarakt. Ophthalmologe 2009; 107:241-5. [DOI: 10.1007/s00347-009-1947-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ziemssen F, Wiedemann P, Kampik A, Holz F, Bartz-Schmidt K. Intravitreale operative Medikamentenapplikation in Deutschland. Ophthalmologe 2009; 106:465-70. [DOI: 10.1007/s00347-009-1964-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Jochmann C, Wiedemann P. Nationale Versorgungsleitlinien Typ 2 Diabetes – Netzhautkomplikationen. Klin Monbl Augenheilkd 2008. [DOI: 10.1055/s-0028-1104709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Wiedemann P. Pharmakochirurgie des diabetischen Makulaödems. Klin Monbl Augenheilkd 2008. [DOI: 10.1055/s-0028-1104711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Rehak M, Fric E, Wiedemann P. [Lutein and antioxidants in the prevention of age-related macular degeneration]. Ophthalmologe 2008; 105:37-8, 40-5. [PMID: 18075744 DOI: 10.1007/s00347-007-1602-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Demographic developments in Europe and North America are causing an increase of age-related diseases. Age-related macular degeneration (AMD) is one of the leading causes of severe central visual acuity loss in elderly people and seems to be an economic problem, too. There is evidence that oxidative damage is an important factor for exacerbation of AMD. Macular pigment with its antioxidative effect may serve as"natural sunglasses" filtering the blue light acting as a possible source of photooxidative damage to the neurosensory retina. The macular pigment consists mostly of lutein and zeaxanthin. These micronutrients from the group of carotenoids, as is the case for vitamins (vitamins C, E, and beta-carotene), cannot be synthesized in mammals and that is the reason why the role of micronutrition or its supplementation and its correlation to AMD progression has been discussed for years. The results of currently published studies are often contradictory. At present there are no results from randomized controlled studies confirming that supplementation of lutein and zeaxanthin can reduce the risk for AMD. Several epidemiological studies investigating the impact of antioxidants and omega-3 fatty acids on the incidence of AMD provided conflicting results.Up to now, AREDS is the largest randomized controlled study investigating the effect of supplementation of antioxidants, zinc, and copper on the progression of AMD. AREDS showed a significant effect of this supplementation in some particular groups of patients with AMD. The supplementation of lutein and omega-3 fatty acids is not toxic but a positive effect has not been proven by randomized studies.
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Rehak M, Blatz R, Wiedemann P, Meier P. Primäre Vitrektomie mit intraokularer Antibiotikaapplikation bei akuter postoperativer Endophthalmitis. SPEKTRUM DER AUGENHEILKUNDE 2008. [DOI: 10.1007/s00717-008-0242-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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