Entity

Time filter

Source Type


Sefi-Yurdakul N.,Izmir Ataturk Education and Research Hospital | Tugcu B.,Istanbul University
Strabismus | Year: 2016

Purpose: To evaluate the incidence of strabismus in children initially diagnosed with pseudostrabismus and to identify risk factors for the development of strabismus. Methods: The medical records of patients who were diagnosed with pseudostrabismus at initial examinations in outpatient clinic were reviewed retrospectively. Follow-up examinations were made at the strabismus department. Age at first examination, gender, family and developmental history, ophthalmic and orthoptic findings including orbit, and eyelid pathologies were investigated. Results: Sixty-five patients with the diagnosis of pseudostrabismus were identified; 2 patients (3.1%) had pseudoexotropia, and 63 patients (96.9%) had pseudoesotropia. The mean age at the initial exam was 29.26±26.68 months (range; 4–120 months). Epicanthal skin folds (n=35), flat broad nasal bridge (n=17), blepharophimosis syndrome (n=1), hypertelorism (n=1), telecanthus (n=1), and multiple pathologies (n=10) were the reasons for pseudostrabismus. Six patients (9.2%) had clinically significant hypermetropia. Anisometropia and amblyopia were detected in 1 (1.5%) and 3 patients (4.6%), respectively, at the initial examination. The mean follow-up period was 25.2±23.28 months (range; 1–154 months). During the follow-up period, true strabismus was detected in 8 cases (12%); of these, 5 cases had non-refractive esotropia, 2 cases had refractive accommodative esotropia, and 1 case had exotropia. Binocular single vision was not developed following amblyopia therapy and refractive correction in esotropic cases. Binocular single vision and best corrected visual acuity were statistically significant risk factors for the development of strabismus (P=0.001). Conclusion: The pseudostrabismic children with subnormal binocular single vision or low visual acuity require follow-up for the risk of development of true strabismus. © 2016 Taylor & Francis. Source


Sefi-Yurdakul N.,Izmir Ataturk Education and Research Hospital
International Journal of Ophthalmology | Year: 2015

Aim: To evaluate the visual findings as primary manifestations in patients with intracranial tumors. Methods: The medical charts of the patients with intracranial tumors who initially admitted to the Neuro-ophthalmology and Strabismus Department with ocular complaints between August 1999 and December 2012 were reviewed retrospectively. The detailed clinical history and the findings of neuro-ophthalmologic examination were recorded. Ocular symptoms and signs, the types and locations of intracranial tumors, and the duration of symptoms before the diagnosis were evaluated. Results: The mean age of 11 women (61.1%) and 7 men (38.9%) was 42.2±11.0 (range 20-66y) at the time of intracranial tumor diagnosis. Initial symptoms were transient visual obscurations, visual loss or visual field defect in 16 cases (88.9%), and diplopia in 2 cases (11.1%). Neuro-ophthalmologic examination revealed normal optic discs in both eyes of 6 patients (33.3%), paleness, atrophy or edema of optic disc in 12 patients (66.7%), and sixth cranial nerve palsy in 2 patients (11.1%). Visual acuity ranged between normal vision and loss of light perception. Cranial imaging demonstrated craniopharyngioma (n=1), plasmacytoma (n=1), meningioma (n=6; olfactory groove and tuberculum sellae, pontocerebellar angle, anterior cranial fossa, frontal vertex, suprasellar region), and pituitary macroadenoma (n=10). The mean duration between the onset of visual disturbances and the diagnosis of intracranial tumor was 9.8±18mo (range 3d-6y). Conclusion: The ophthalmologist is frequently the first physician to encounter a patient with clinical manifestations of intracranial tumors that may cause neurological and ocular complications. Neuro-ophthalmologic findings should be carefully evaluated to avoid a delay in the diagnosis of intracranial tumors. © 2015, International Journal of Ophthalmology (c/o Editorial Office). All rights reserved. Source


Yildirim Y.,Eastern Mediterranean University | Gunay S.,Izmir Ataturk Education and Research Hospital | Karadibak D.,Izmir University
Journal of Back and Musculoskeletal Rehabilitation | Year: 2014

Background: The purpose of this study was to identify factors associated with Low Back Pain (LBP) among employee working at a package producing industry. Methods: A sample of 111 male blue-collar workers, between the ages of 18 to 50 years old and 31 white-collar workers between the ages of 17 to 50 years old completed a questionnaire which included demographic data, educational level, participation in sports activities, activity, postural habits, smoking, work conditions lifting and bending activities during the workday strenuous arm position and questions related with low back pain (LBP). The isometric strength of back muscles were measured using a dynamometer. RESULT: The prevalence of LBP during the past 12 months was 55.9% for blue-collar workers and 51.6% for white-collar workers. The chi-square and t-test analysis showed statistically significant relations between LBP and smoking, number of years spent working in the last job, lifting activities between the ages of 30-34 years old. The incorrect standing and sitting posture of the blue-collar workers and the sitting posture with bending forward on the table of the white-collar workers were significantly related with LBP (p< 0.05). Conclusions: Our results identified the risk factors of LBP in a package producing company. The protective approaches aiming to avoid the risk factors could decrease the low back pain prevalence that increases each year passed worked at the company. © 2014 - IOS Press and the authors. All rights reserved. Source


Ozkan N.,Marmara University | Salva E.,Marmara University | Cakalagaoglu F.,Izmir Ataturk Education and Research Hospital | Tuzuner B.,Marmara University
Biotechnic and Histochemistry | Year: 2012

Formalin has long been the standard fixative for clinical routines worldwide. After the Formaldehyde Standard became law in the US in 1987, as a result of increasing concerns about the potential carcinogenicity of formaldehyde, attempts have been made to find safer alternatives. Alcoholic formalin is a useful fixative, because in addition to fixation, dehydration also is begun. For centuries, honey has been known to be an antibacterial agent with the potential to preserve compounds without harmful effects on its users. We compared the effects of honey fixation with other routine fixatives using conventional histochemical and immunohistochemical staining methods. Our results demonstrated that tissues fixed in either honey or alcoholic formalin and 10% neutral buffered formalin (NBF) have similar histomorphology. Honey fixation showed minor histomorphological differences among the various tissues; however, it did not influence affect correct diagnostic conclusions. Our results suggested that honey can be used as a safe alternative to formalin in histopathology. © 2012 The Biological Stain Commission. Source


Salva E.,Marmara University | Salva E.,Pathology Laboratory | Kabasakal L.,Marmara University | Eren F.,Marmara University | And 3 more authors.
Nucleic Acid Therapeutics | Year: 2012

Vascular endothelial growth factor (VEGF) is the important angiogenic factor associated with tumor growth and metastasis in a wide variety of solid tumors. The aim of this study is to investigate the tumor suppressive effect of chitosan/small interfering RNA (siRNA)-VEGF nanoplexes in the rat breast cancer model. Chitosan/siRNA nanoplexes (siVEGF-A, siVEGFR-1, siVEGFR-2) and NRP-1 were prepared in a 15 to1 ratio and injected (intratumorally) into the breast-tumor-bearing Sprague-Dawley rats. Tumor volumes were measured during 21 days. To investigate the effect of chitosan/siRNA nanoplexes on VEGF expression in tumors, VEGF was analyzed with immunohistochemistry and western blotting. The mRNA levels of VEGF in tumor samples were determined with real-time PCR (RT-PCR). After siRNA treatment, a marked reduction in tumor volumes was measured in complex-injected rats (97%). Free siRNA injection showed lower tumor inhibition. Reduction of VEGF protein was also shown with western blotting and immunohistochemistry. Similar results were obtained with RT-PCR also. These results indicate that the chitosan/siRNA targeting to VEGF nanoplexes have a remarkably suppressive effect on VEGF expression and tumor volume in breast cancer model of rats. © 2012 Mary Ann Liebert, Inc. Source

Discover hidden collaborations