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Öğe Anthrax in upper eyelid [Üst göz kapa?inda şarbon](2013) Köktekir B.E.; Sümer Ş.; Gedik Ş.; Okudan S.Anthrax is an acute infection caused by Bacillus anthracis. Although it is a zoonotic disease that mainly affects herbivorous animals, it might also be contagious to humans by infected animals. The most common type is skin anthrax. When eyelid is involved; echymosis, bulla formation and necrosis can be observed. We report a 75 years old woman presenting with bilateral extensive lid echymosis and edema and diagnosed as anthrax. The clinical findings resolved with appropriate systemic and topical antibiotic treatment, and the lesions on the eyelid resulted with scatrizating ectropion. In failure of early diagnosis and treatment, there is a high risk of mortality and sequela with this particular disease which rarely involves eyelids.Öğe Comparison of central corneal thickness measurements in normal and keratoconic eyes using ultrasonic pachymetry and OCULUS pentacam [Normal ve keratokonuslu gölerde ultrasonik pakimetri ve OCULUS pentacam ile ölçülen santral kornea kalınlıklarının karşılaştırılması](Turkish Ophthalmology Society, 2011) Büyük K.; Bozkurt B.; Kamiş Ü.; Özka?nici A.; Okudan S.Purpose: To compare the central corneal thickness (CCT) measurements in normal and keratoconic eyes using ultrasonic pachymetry (Ocuscan® RxP) and OCULUS Pentacam Scheimpflug camera. Material and Method: In this prospective study, CCT measurements were done in 57 keratoconic eyes and 62 healthy eyes by OCULUS Pentacam and ultrasonic pachymetry, consecutively. The measurements taken by the 2 instruments were compared with paired-samples t-test. A p value <0.05 was considered as statistically significant. The correlation between the measurements was evaluated using the Pearson test. Results: The mean CCT of keratoconic eyes was 480.18±33.6 ±m with Pentacam and 465.67±34.5 ±m with ultrasonic pachymetry, which demonstrates a statistically significant difference (t=-5.87; p585 ±m (t=-3.3; p=0.005). There was a high correlation between the CCT readings done by the two methods (r=0.95, p<0.001). Discussion: The CCT measurements obtained by Pentacam in both keratoconic and healthy eyes highly correlated with the ultrasonic measurements. However, the CCT measurements taken by Pentacam were higher compared to the ultrasonic measurements; therefore, one and the same imaging technique should be used in follow-up measurements.Öğe Evaluation of the effect of diabetes mellitus type 1 and its metabolic control on retinal nerve fiber layer thickness [Tip 1 diabetes mellitus ve metabolik kontrolünün retina sinir lifi tabakasi kalinli?ina etkisinin de?erlendirilmesi](2010) Gönül Ş.; Turgut Öztürk B.; Şahin A.; Özka?nici A.; Okudan S.Purpose: To evaluate the retinal nerve fiber layer (RNFL) thickness changes in type 1 Diabetes Mellitus (DM) patients without diabetic retinopathy (DR) and the effect of blood glucose regulation. Materials and Methods: The RNFL thickness measured by optical coherens tomography (OCT) of type 1 DM patients without DR according to ophthalmological examination (n=98) are compared with age-sex matched healthy subjects (n=49). Fasting blood glucose and HbA1c levels measured via analysis of venous blood samples obtained after 12 hours of starvation period are evaluated for the assessment of the metabolic regulation. Results: The mean RNFL thickness was 100.00±11.93 ? in diabetic patients and 103.79±6.45 ? in the control group, however this difference was not statistically significant. The comparison of RNFL thickness in superior, nasal, inferior and temporal quadrants revealed also no statistically significant change. The mean duration of DM was 60.76±50.41 months and analysis according to duration demonstrated no statistically significant difference of RNFL thickness among patients with duration of DM for 1-60 months, 61-120 months and those with duration of DM for >120 months (p>0.05). The mean fasting blood glucose was 237.46±119.22 mg/dl and the mean HbA1c was 8.77±1.94%. The HbA1c levels showed a negative correlation with RNFL thickness (koeff= - 0.49 p<0.001) Conclusion: The RNFL thickness did not show a statistically significant difference between healthy subjects and patients with type 1 DM without DR. However the negative correlation with HbA1c suggests that poor metabolic control may cause a progressive defect in RNFL.Öğe Spectral domain optical coherence tomography findings in posterior microphthalmia [Posterior mikroftalmide spektral domain optik koherens tomografi bulgulari{dotless}](Turkish Ophthalmology Society, 2014) Kayitmazbatir E.T.; Öztürk B.T.; Kerimo?lu H.; Özka?nici A.; Okudan S.The retinal spectral domain optical coherence tomography (SD-OCT) findings of two posterior microphthalmia cases are presented in this case report. For this purpose, the findings of two siblings aged five and seven years who presented to our clinic with the complain of far-sightedness and high hypermetropia were evaluated. Both cases diagnosed to have posterior microphthalmia demonstrated normal biomicroscopic anterior segment examination and gonioscopy findings and the axial lengths were measured to be shorter than 17mm. The SD-OCT analysis of papillomacular folds detected in fundus examination revealed contribution of only neurosensorial retina. Beneath the retinal fold, we observed bilateral cysts in the intraretinal area in one of the cases and a triangle-shaped hyporefective space with an apex corresponding to that of the retinal fold in the subretinal area in both cases. SD-OCT is an adjunctive imaging tool for diagnosis and follow-up of degenerative changes in posterior microphthalmia. These changes may be also important for visual prognosis.
