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Öğe Bilateral multiple retinal hyperfluorescent dots in a presumed Rickettsia conorii infection(Lippincott Williams & Wilkins, 2001) Esgin, H; Akata, F[Abstract Not Available]Öğe Clinical comparison of the ocular blood flow tonograph and the Goldmann applanation tonometer(Wichtig Editore, 1998) Esgin, H; Alimgil, ML; Erda, SPurpose. To compare the IOP readings of an ocular blood flow (OBF) tonograph (OBF Labs UK Ltd) with Goldmann applanation tonometry. Methods. 194 patients were studied. In group 1, the software version 8.2 of the OBF tonograph was used in 214 eyes of 107 patients and in group 2, the 11.2 version of the tonograph was used in 174 eyes of 87 patients. Results. We found 63% of the OBF tonograph readings to be within +/-2 mm Hg of the Goldmann applanation tonometry readings in group 1 and 60% in group 2. In group I the correlation coefficient between the readings of the two instruments was 0.71 and 0.82 in group 2. The mean value for the paired differences in group 1 was -1.34+/-2.75 mm Hg overall and -1.04+/-2.91 mm Hg overall in group 2. There was a significant difference between the Goldmann applanation tonometer and OBF tonograph readings in the 8-10 mm Hg interval (p<0.001) in group I, but not in group 2 (p>0.1). Conclusions. The 11.2 version of the OBF tonograph is more accurate than the 8.2 version and measures IOP in a manner that corresponds well to the Goldmann applanation tonometer in the 8-10 mm Hg and 21-29 mm Hg intervals. It corresponds fairly well in the 11-20 mm Hg interval.Öğe The effect of systemic hypertension on pulsatile ocular blood flow in diabetic patients(Wiley, 2001) Esgin, H; Alimgil, ML; Erda, SPurpose: To determine the haemodynamics of the ciliary choroidal system in diabetics with or without systemic hypertension, Methods: 90 eyes of 45 diabetic patients were included into the study. Patients were divided into two groups based on the presence of systemic hypertension, The pulsatile component of the total ocular blood flow in diabetics with or without hypertension was analyzed using ocular blood flow tonograph (OBF Labs, UK), The control group was comprised of 40 age-matched eyes of 20 volunteers with no ocular or systemic disease. Results were compared with the control group. Results: Pulse amplitude (PA), pulse volume (PV) and pulsatile ocular blood flow (POBP) were significantly lower (p<0.05) in diabetics without systemic hypertension than the controls. In diabetics with hypertension, although the systolic and diastolic blood pressures were significantly higher than the control group, there was not any statistically significant difference (p>0.05) between PA, PV and POBF results, Conclusion: POBP was found to be lower in diabetics without hypertension compared to the controls. Such a presence of systemic hypertension may increase the choroidal blood flow in diabetics.Öğe Long-term macular function in eyes with central serous chorioretinopathy(Wiley, 2005) Baran, NV; Gürlü, VP; Esgin, HPurpose: This study aimed to investigate the long-term effects of central serous chorioretinopathy (CSCR) on macular function. Methods: Sixty-two eyes of 31 patients were included in this study All patients were diagnosed with unilateral CSCR at the Retina Unit of the Ophthalmology Department, Trakya University Medical Faculty, and had a post-attack bilateral visual acuity of 6/6 and a follow-up period of a minimum of 6 months. Visual function was assessed using the Amsler grid, 40-hue colour discrimination test, visual field examination by means of Octopus automatic perimeter and Cambridge contrast sensitivity tests. Results: Of the 31 patients, 71% were men and 29% were women, with a mean age of 39.3 +/- 7.6 years. The patients had a mean follow-up period of 50.6 +/- 40.5 months after the acute attack. Metamorphopsia was observed in 67.7% of the cases with CSCR. A colour discrimination defect was found in 48.4% of the CSCR eyes and in 54.8% of the fellow eyes. As compared with the fellow eyes, the mean deviation in the central 10 degrees of visual field was significantly higher (t = 2.9, P = 0.007) and the mean contrast sensitivity score was significantly lower (t = -3.2, P = 0.004) in the CSCR eyes. Discussion: Patients with unilateral CSCR were observed to have long-term bilateral colour discrimination defects, and eyes with clinical CSCR were determined to have central relative scotoma and loss of contrast sensitivity.Öğe Ocular pulse amplitude in patients with Graves' disease(Scriptor Publisher, 1999) Alimgil, ML; Benian, Ö; Esgin, H; Erda, SPurpose: The purpose of this study was to evaluate the ocular pulse amplitude changes in patients with Graves' disease. Methods: The pulse amplitudes of 31 patients with Graves' disease were measured with the OBF-Tonograph (OBF Labs UK). Ail patients were in the euthyroid phase of the disease. 17 patients (Group I) had no ocular involvement or only mild lid retraction. 14 patients (Group II) had either proptosis and/or extraocular muscle involvement. Only the worst involved eye of each patient was included into the study. Results: There was no statistically significant difference between the two groups among the parameters which might influence the pulse amplitude measurement. The pulse amplitude was statistically significantly lower in Group II than in Group I(2.34+/-0.79 and 3.22+/-0.94 mmHg respectively p<0.013). Conclusion: Pulse amplitude measurements may be an important discrimination and classification parameter for patients with ophthalmic Graves' disease.Öğe The relationship between the levels of plasma total homocysteine and insulin resistance in uncomplicated mild-to-moderate primary hypertension(Nature Publishing Group, 2006) Ustundag, S; Arikan, E; Sen, S; Esgin, H; Ciftci, SPrimary hypertension ( HT) is the most frequent independent risk factor for cardiovascular disease. It was demonstrated that plasma total homocysteine ( tHcy) is an important and modifiable cardiovascular risk factor, which correlates with the severity of atherosclerotic disease, 1 despite some discordant results. 2 Although data supporting the cause-effect relationship between HT and tHcy are limited, tHcy may play a role in the pathogenesis of HT.Öğe Tc99m-HMPAO brain SPECT in children with visual impairment(Springer Verlag, 1999) Kaya, M; Esgin, H; Karasalihoglu, S; Altun-Durmus, G; Sarikaya, A; Salan, A; Saliboglu, YS[Abstract Not Available]
