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Effect of latanoprost/timolol and dorzolamide/tiomolol on intraocular pressure after phacoemulsification surgery

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International Journal of Ophthalmology(English edition) 2011年第2期4卷 190-194页

作者： haydar erdogan Ayse Vural Ozec Cengiz Caner Mustafa Ilker Toker Mustafa Kemal Arici Aysen Topalkara Departments of Ophthalmology School of MedicineUniversity of Cumhuriyet

·AIM:To evalaute the effect of fixed-combination latanoprost 0.005%/timolol maleate 0.5% and dorzolamide hydrochloride 2%/timolol maleate 0.5% on postoperative intraocular pressure after phacoemulsification cataract surgery.·METHODS:This study is a prospective,randomized,double-masked and *** study included 90 eyes of 90 patients which were scheduled to have phacoemulsification *** were randomly assigned preoperatively to 1 of 3 groups (30 eyes of 30 patients).Two hour before surgery,the patients received one drop latanoprost/timolol (group 1),dorzolamide/timolol (group 2) and placebo (group 3,control group).The IOPs were measured at preoperative and postoperative 4,8,and 24 hours.·RESULTS:The preoperative mean intraocular pressure was not statistically significant between both drug groups and control *** group 1 and 2,the postoperative mean IOP [group1:(14.03?à3.15)mmHg and group 2:(14.16?à4.43)mmHg] at 24 hours were significantly lower than the control group [(16.93?à3.70)mmHg,(P 0.05).·CONCLUSION:When compared with placebo,the use of preoperative fixed combination of latanoprost/timolol and dorzolamide/timolol is an effective method for preventing intraocular pressure elevation in 24 hours after phacoemulsification surgery,but did not completely prevent IOP spikes.·

关键词： dorzolamide/timolol latanoprost/timolol intraocular pressure phacoemulsification cataract surgery

Prevalence of refraction errors and color blindness in heavy vehicle drivers

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International Journal of Ophthalmology(English edition) 2011年第3期4卷 319-322页

作者： haydar erdogan Levent zdemir Seher Arslan Ilhan etin Ayse Vural ze Selma etinkaya Haldun Sümer Department of Ophthalmology Faculty of MedicineCumhuriyet University Department of Public Health Faculty of MedicineCumhuriyet University Department of Medical Education Faculty of MedicineCumhuriyet University

AIM: To investigate the frequency of eye disorders in heavy vehicle ***: A cross-sectional type study was conducted between November 2004 and September 2006 in 200 driver and 200 non-driver persons.A complete ophthalmologic examination was performed,including visual acuity,and dilated examination of the posterior *** used the auto refractometer for determining refractive ***: According to eye examination results,the prevalence of the refractive error was 21.5% and 31.3% in study and control groups respectively (P <0.05).The most common type of refraction error in the study group was myopic astigmatism (8.3%) while in the control group simple myopia (12.8%).Prevalence of dyschromatopsia in the rivers,control group and total group was 2.2%,2.8% and 2.6% ***: A considerably high number of drivers are in lack of optimal visual *** errors in drivers may impair the traffic security.

关键词： refractive error myopia hypermetropia colour blindness

Comparison of the effects of bevacizumab and ranibizumab injection on corneal angiogenesis in an alkali burn induced model

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International Journal of Ophthalmology(English edition) 2012年第4期5卷 448-451页

作者： Ayhan Dursun Mustafa Kemal Arici Feyza Dursun Ayse Vural Ozec Mustafa Ilker Toker haydar erdogan Aysen Topalkara Department of Ophthalmology School of MedicineCumhuriyet UniversitySivasTurkey

·AIM:To investigate the effects of bevacizumab and ranibizumab on corneal neovascularization in an alkali burn-induced model of corneal angiogenesis. ·METHODS:Fifteen Wistar-Albino rats were divided randomly into 3 groups after chemical cauterization of the cornea. The first group received a single dose of 0.1mL saline solution as a control group whereas second and third groups received a single dose of 2.5mg bevacizumab or 1mg ranibizumab by subconjunctival injection, respectively. After three weeks, the rat corneas were evaluated by biomicroscopy and corneal photographs were taken. The percentage of neovascularization area, length of the longest new vessel, corneal oedema and corneal opacity scores were assessed. ·RESULTS:The analysis of digital photographs showed that the percentage of neovascularization area to the total corneal area, the length of the longest new vessel, corneal oedema and opacity scores were significantly lower in both study groups compared to the control group (P <0.05). Additionally, the percentage of corneal neovascularization area, the length of the longest new vessel and corneal opacity score were less with bevacizumab than ranibizumab. ·CONCLUSION:Subconjunctival bevacizumab and ranibizumab treatments may be effective methods in reducing corneal neovascularization. Furthermore, bevacizumab is more effective than ranibizumab in the inhibition of corneal neovascularization.

关键词： corneal neovascularisation bevacizumab ranibizumab

Total oxidative stress, paraoxonase and arylesterase levels at patients with pseudoexfoliation syndrome and pseudoexfoliative glaucoma

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International Journal of Ophthalmology(English edition) 2015年第5期8卷 985-990页

作者： Feyza Dursun Ayse Vural Ozec Huseyin Aydin Aysen Topalkara Ayhan Dursun Mustafa Ilker Toker haydar erdogan Mustafa Kemal Arici Department of Ophthalmology Cumhuriyet University School of Medicine Department of Biochemistry Cumhuriyet University School of Medicine

AIMTo investigate the oxidative stress status of the aqueous humor and serum of patients with pseudoexfoliation (PEX) syndrome and pseudoexfoliative glaucoma (PEG) and to measure paraoxonase (PON) and arylesterase (ARE) *** total of 78 patients were enrolled in the study, with 26 patients in each separate group. The patients were divided into three groups: the first group entailed PEX syndrome patients, while the second group consisted of patients with PEG and the third group involved patients with no additional systemic diseases, other than the diagnosis of cataract as control. Total oxidative stress (TOS), total antioxidant capacity (TAC), PON, and ARE levels in aqueous humor and serum were ***, PON and arylesterase levels in aqueous humor and serum of the PEX syndrome and PEG patients were significantly decreased compared with control group (P<0.05). TOS values were higher in patients with PEX syndrome and PEG than controls (P<0.05). TAC, PON and ARE levels of aqueous humor did not differ significantly between the PEX syndrome and PEG groupsCONCLUSIONThese findings are potentially of significance and add to the growing body of evidence for oxidative stress in PEX syndrome and PEG. Decreased antioxidant defense and increased oxidative stress system may play an important role in the pathogenesis of PEX syndrome and PEG.

关键词： pseudoexfoliation syndrome oxidative stress paraoxonase arylesterase

重型车辆驾驶员中屈光不正及色盲的患病率(英文)

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国际眼科杂志 2011年第7期11卷 1140-1143页

作者： haydar erdogan Levent Ozdemlr Seher Arslan Ilhan Cetin Ayse Vural Ozec Selma Cetinkaya Haldun Svmer 土耳其锡瓦斯Cumhuriyet大学眼科土耳其锡瓦斯Cumhuriyet大学公共卫生系土耳其锡瓦斯Cumhuriyet大学医学教育系

目的:探讨眼科疾病在重型车辆驾驶员中的患病率。方法:在2004-11/2006-09期间选取驾驶员(实验组)和非驾驶员(对照组)各200例进行眼科全面检查包括视力和后房,使用自动验光仪检查屈光不正。结果:根据检查结果,屈光不正的患病率实验组为21... 详细信息

目的:探讨眼科疾病在重型车辆驾驶员中的患病率。方法:在2004-11/2006-09期间选取驾驶员(实验组)和非驾驶员(对照组)各200例进行眼科全面检查包括视力和后房,使用自动验光仪检查屈光不正。结果:根据检查结果,屈光不正的患病率实验组为21.5%,对照组为31.3%(P<0.05).实验组中常见类型为近视散光(8.3%),而对照组为单纯近视(12.8%)。实验组色觉障碍的患病率为2.2%,对照组为2.8%,两组总的患病率为2.6%。结论:大多数驾驶员没有具备良好的视力,其中屈光不正可以影响行驶安全。

关键词：屈光不正近视远视色盲

Performance evaluation of hybrid constructed wetlands for the treatment of municipal wastewater in developing countries

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Chinese Journal of Chemical Engineering 2020年第6期28卷 1717-1724页

作者： Sajjad haydar Mehwish Anis Misbah Afaq Institute of Environmental Engineering&Research(IEER) University of Engineering&Technology(UET)LahorePakistan

In developing countries,high cost of conventional wastewater treatment is a major hindrance in its *** wetlands(CWs)offer low-cost and effective solution to this *** current study aimed to evaluate an innovative maneuver of CWs *** flow constructed wetlands(HCWs)for municipal wastewater(MWW).The HCWs included two lab scale CWs;one horizontal and one vertical,in *** plant species were *** were operated in both,batch and continuous *** mode was used to(1)optimize detention time and(2)find pollutants removal *** operation(at batch optimized retention time)was carried out for the evaluation of mass removal rate,r(g·m-2·d-1),volumetric rate constant,Kv(per day)and areal rate constant,Ka(m·d-1).Among two local plants tested,Pistia stratiotes gave better removal efficiency than *** detention time in HCWs was found to be 8 days(4+4 each).The optimum COD,BOD,TSS,TKN and P removal observed for Pistia stratiotes planted HCWs was 80%,84%,82%,71%and88%*** standards for COD,BOD and TSS were met at optimum *** values of Kaand Kv demonstrated that more removal occurred in vertical flow as compared to horizontal flow CW.

关键词： Constructed wetlands Municipal wastewater Hybrid Pistia Typha Batch mode Continuous mode

Bose-Einstein Condensate in a Linear Trap with a Dimple Potential

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Communications in Theoretical Physics 2013年第5期59卷 629-637页

作者： haydar Uncu Devrim Tarhan Department of Physics Adnan Menderes University Department of Physics Harran University

We study Bose-Einstein condensation in a linear trap with a dimple potential where we model dimple potentials by Dirac δ function. Attractive and repulsive dimple potentials are taken into account. This model allows simple, explicit numerical and analytical investigations of noninteracting gases. Thus, the Schrdinger equation is used instead of the Gross-Pitaevski equation. We calculate the atomic density, the chemical potential, the critical temperature and the condensate fraction. The role of the relative depth of the dimple potential with respect to the linear trap in large condensate formation at enhanced temperatures is clearly revealed. Moreover, we also present a semi-classical method for calculating various quantities such as entropy analytically. Moreover, we compare the results of this paper with the results of a previous paper in which the harmonic trap with a dimple potential in 1D is investigated.

关键词： Bose–Einstein condensate linear trap a dimple potential Dirac δ potential

Asymptotic Iteration Method for Energies of Inversely Linear Potential with Spatially Dependent Mass

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Communications in Theoretical Physics 2010年第6期53卷 1043-1045页

作者： Eser Olgar haydar Mutaf University of Gaziantep Engineering of Physics Department

The bound-state solution of the position dependent mass Klein-Gordon equation including inversely linear potential is obtained within the framework of the asymptotic iteration method. The relation between the scalar and vector potentials is considered to S（x） = V（x）（β - 1）. In particular, it is shown that the corresponding method exactly reproduces the spectrum of linearly inversely potentials with spatially dependent mass.

关键词： Klein Gordon equation asymptotic iteration method position dependent mass

A theoretical study on chemical ordering of 38-atom trimetallic Pd-Ag-Pt nanoalloys

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Chinese Physics B 2020年第7期29卷 548-554页

作者： Songül Taran Ali Kemal Garip haydar Arslan Department of Physics Duzce UniversityDuzce 81620Turkey Department of Physics Zonguldak Bulent Ecevit UniversityZonguldak 67100Turkey

In this study,truncated octahedron(TO)structure is selected for further analysis and we focus on 38-atom Pd-Pt-Ag trimetallic *** best chemical ordering structures of PdnAg32-nPt6 trimetallic nanoalloys are obtained at Gupta *** structures with the lowest energy at Gupta level are then re-optimized by density functional theory(DFT)relaxations and DFT results confirm the Gupta level calculations with small shifts on bond lengths indicating TO structure is favorable for 38-atom of PdnAg32-nPt6 trimetallic *** DFT excess energy analysis shows that Pd8Ag24Pt6 composition has the lowest excess energy value in common with excess energy analysis at Gupta *** Pd8Ag24Pt6 composition,eight Pd atoms are central sites of 8(111)hexagonal facets of TO,24 Ag atoms locate on surface,and 6 Pt atoms locate at the core of the *** is also obtained that all of the compositions except Pd18Ag14Pt6 and Pd20Ag12Pt6 exhibit a octahedral Pt ***,it is observed that there is a clear tendency for Ag atoms to segregate to the surface and also Pt atoms prefer to locate at core due to order parameter(R)variations.

关键词： nanoalloys chemical ordering optimization density functional theory(DFT)