Person: ŞAHİN, ÖZLEM
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ŞAHİN
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ÖZLEM
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Publication Open Access Comparison of Efficacy and Side Effects of Multispot Lasers and Conventional Lasers for Diabetic Retinopathy Treatment(TURKISH OPHTHALMOLOGICAL SOC, 2017-01-17) ÇELİKER ATABERK, HANDE; Celiker, Hande; Bulut, Azer Erdagi; Sahin, OzlemPanretinal photocoagulation (PRP) is a standard treatment for proliferative diabetic retinopathy. Conventional laser (CL) therapy is performed in one or more sessions in single spot mode. Visual disabilities have been reported after treatment with CL, including central vision loss due to macular edema and peripheral visual field loss resulting from extensive inner retinal scarring. Multispot laser (MSL) photocoagulation has recently been introduced to clinical practice. Studies comparing PRP conducted with MSL and CL have reported that MSLs resulted in less retinal tissue damage and pain, and greater patient comfort compared to CL. The aim of this review was to compare the efficacy and side effects of MSLs and CLs for diabetic retinopathy treatment.Publication Metadata only Increased serum sialic acid in diabetic retinopathy of type 1 diabetes(2013) YAVUZ, DİLEK; Eraslan M., Yenice O., Kazokoglu H., Yavuz D.G., Cerman E., Celiker H.AIM: To investigate the potential association between serum sialic acid and diabetic retinopathy and its several grades. METHODS: We studied the level of serum sialic acid in 70 patients. Thirty control vs 40 type 1 diabetics and with different levels of diabetic retinopathy as well. RESULTS: We found higher levels of serum sialic acid level in diabetics compared to control subjects (95.95±9.5 vs 45.05±19.91 mmoL/L, P=0.0001). We also observed a progressive rise in its concentration as the level of diabetic retinopathy increased (P<0.05) but the correlation was weak. Serum sialic acid level correlated positively with blood glucose level (r=0.67, P=0.0001). CONCLUSION: Increase in serum sialic acid levels seems to be related to the stage of the retinopathy and may help us to determine the extent of retinopathy in type 1 diabetic patients. But we think that we need more detailed studies to get a more precise conclusion.Publication Open Access Decreased subfoveal choroidal thickness and failure of emmetropisation in patients with oculocutaneous albinism(BMJ PUBLISHING GROUP, 2014-08) ÇERMAN, EREN; Karabas, Levent; Esen, Fehim; Celiker, Hande; Elcioglu, Nursel; Cerman, Eren; Eraslan, Muhsin; Kazokoglu, Haluk; Sahin, OzlemPurpose The purpose of this work was to describe the choroidal structure in patients with oculocutaneous albinism (OCA). Methods 20 eyes of 10 patients with OCA and 14 eyes of 7 healthy controls were recruited for the study. Enhanced depth imaging optical coherence tomography (OCT) images of the subjects were taken. The choroidal thickness (CT) was measured from the outer boarder of the retinal pigment epithelium to the inner boarder of sclera at 500 mm intervals of a horizontal section from the optic disc. Statistical analysis was performed to evaluate variations in CT at subfoveal and peripapillary areas. Results In the fundoscopic examination and OCT imaging, the foveal light reflex was absent and the foveal pit could not be observed in all of the patients with OCA. The mean subfoveal CT of the patients with OCA was significantly thinner (242 +/- 56 mu m) compared with healthy controls (349 +/- 70 mu m) (p<0.001); while there was no statistically significant difference in the peripapillary CTs of the patients with OCA and controls (157 +/- 42 mu m vs 151 +/- 31 mu m respectively, p=0.77), indicating a localised abnormality of choroidal anatomy. Conclusions This study for the first time demonstrated that CT is decreased in patients with OCA at the subfoveal region. These data combined with the underdevelopment of the foveal pit indicate that there is a generalised developmental or genetic abnormality in the posterior pole of patients with OCA. This choroidal structural abnormality might be related to the previously reported failure of emmetropisation in these children. Further research is needed to understand choroidal metabolism and its relationship with these anatomical changes in albinism.Publication Open Access The choroid and lamina cribrosa is affected in patients with Parkinson's disease: enhanced depth imaging optical coherence tomography study(WILEY, 2016-02) ÇERMAN, EREN; Eraslan, Muhsin; Cerman, Eren; Balci, Sevcan Yildiz; Celiker, Hande; Sahin, Ozlem; Temel, Ahmet; Suer, Devran; Elmaci, Nese TuncerPurpose: To compare lamina cribrosa (LC) and choroidal thicknesses using enhanced depth imaging optical coherence tomography (EDI-OCT) in patients with Parkinson's disease (PD) and healthy controls. Methods: A total number of 44 eyes of 22 patients with PD and 50 eyes of 25 healthy subjects were utilized in this institutional cross-sectional study. After a complete ophthalmic examination, all eyes were imaged with OCT (RTVue-100 version 5.1 Fourier-domain optical coherence tomography; Optovue Inc., Fremont, CA, USA); LC and choroidal thickness were assessed. Results: The mean LC thicknesses were 209.4 +/- 40.2 mu m in patients with PD and 292.5 +/- 33.7 mu m in control subjects. There was a significant difference in the mean LC thickness between the groups (p < 0.0001). The choroidal thickness measurements of the PD group at the subfoveal region and 1.5 mm temporal and 1.5 mm nasal to the fovea were 228.1 +/- 44.3, 193.2 +/- 41.4 and 188.4 +/- 49.0 lm, respectively, whereas measurements for the controls were, respectively, 246.5 +/- 38.2, 227.3 +/- 34.7 and 216.7 +/- 51.4 lm. The choroid was significantly thinner in eyes of the PD group compared to that of the controls (p = 0.001, p < 0.001, and p = 0.006). There was no significant correlation between the disease severity and OCT parameters. The duration of the disease showed a statistically significant negative correlation with LC (rs[94] = -0.700, p < 0.001), and average subfoveal and temporal and nasal choroid thicknesses (rs[94] = -0.282, p = 0.006; rs[94] = -0.324, p = 0.001, rs[94] = -0.240, and p = 0.020, respectively). Conclusions: Regardless of the disease severity, PD may cause atrophy and volume loss in the lamina cribrosa, and choroid. An enhanced depth imaging technique may be used as an additional modality in the diagnosis and follow-up of patients with PD.Publication Metadata only Çocukluk çağı vitreoretinal patolojilerinde cerrahi yaklaşım(Anadolu Yayınları, 2021-01-01) ÇELİKER ATABERK, HANDE; ŞAHİN, ÖZLEM; Çeliker H., Şahin Ö.Publication Open Access A Comparison of Topical or Retrobulbar Anesthesia for 23-Gauge Posterior Vitrectomy(HINDAWI LTD, 2014) ÇELİKER ATABERK, HANDE; Celiker, Hande; Karabas, Levent; Sahin, OzlemBackground. To compare the efficacy and safety of topical anesthesia versus retrobulbar anesthesia in 23-gauge vitreoretinal surgery. Materials and Methods. A total of 63 patients scheduled for 23G posterior vitrectomy without scleral buckling procedures were included in the study. The patients were randomly assigned to receive either topical (Group 1, n = 31) or retrobulbar anesthesia (Group 2, n = 32). Postoperatively, patients were shown a visual analogue pain scale (VAPS) from 1 (no pain or discomfort) to 4 (severe pain or discomfort) to rate the levels of pain. Results. There was more discomfort in patients in Group 2 while anesthetic was administered (Group 1: 1.0 +/- 0, Group 2: 2.3 +/- 0.7, n = 0.0001). Between the two groups the level of pain during surgery (Group 1: 1.4 +/- 0.5, Group 2: 1.5 +/- 0.5; n = 0.85) was noted. There was also no significant difference between two groups postoperatively (Group 1: 1.2 +/- 0.4, Group 2: 1.3 +/- 0.4; n = 0.28). There were no complications in either group related to the anesthetic technique. No patient needed sedation or anesthesia supplement during the surgery or postoperative period. Conclusion. Topical anesthesia in posterior vitrectomy procedures is an effective and safe method that is alternative to retrobulbar anesthesia.Publication Open Access Ophthalmological Complications Developing After Cardiac Transplantation(2015-05-05) ÇELİKER ATABERK, HANDE; Çeliker, Hande; Şahin, ÖzlemPublication Open Access Angiographic findings in cases with a history of severe retinopathy of prematurity treated with anti-VEGFs: Follow-up to age 6 years(SPRINGER, 2021-11-02) ÇELİKER ATABERK, HANDE; Celiker, Hande; Sahin, OzlemPurpose To report the effects of anti-vascular endothelial growth factor (VEGF) treatment in vascular development for cases of acute retinopathy of prematurity (ROP) using fluorescent angiography (FA) and to present the results of our observational approach to retinal sequelae. Methods A total of 31 eyes in 19 patients with a history of treatment with anti-VEGF agents for classic type 1 ROP and aggressive posterior ROP who underwent FA between March 2014 to February 2020 were reviewed. Angiograms of retinal developmental features of patients aged 4 months to 6 years were examined. Results The patients mean gestational age were 26.06 +/- 1.90 weeks and the mean birth weight were 837.68 +/- 236.79 g. All cases showed various abnormalities at the vascular and avascular retina, and the posterior pole. All but one case showed a peripheral avascular area on FA evaluation during the follow-up period. We did not apply prophylactic laser treatment to these avascular retina. On the final examination, except one case, we did not observe any late reactivation in any patients. Conclusion FA is an important tool for assessing vascular maturation in infants. Every leakage should not be assumed to be evidence of late activation, as some leaks may be related to vascular immaturity. Retinal vascularization may not be completed in all patients, however this does not mean that all these patients need prophylactic laser application. Our observational approach may be more daring than the reports frequently encountered in the literature, but it should be noted that unnecessary laser treatment will also eliminate all the advantages of anti-VEGF treatment.Publication Metadata only Screening for Retinopathy of Prematurity in a Tertiary Ophthalmology Department in Turkey: Incidence, Outcomes, and Risk Factors(SLACK INC, 2014) ÇERMAN, EREN; Cerman, Eren; Balci, Sevcan Yildiz; Yenice, Ozlem Sahin; Kazokoglu, Haluk; Celiker, Hande; Eraslan, MuhsinBACKGROUND AND OBJECTIVE: The aim of this study is to determine the incidence of retinopathy of prematurity (ROP), the number of preterm infants requiring treatment for ROP, and the factors influencing the development of ROP requiring treatment in a Turkish population. PATIENTS AND METHODS: Data on 1,252 infants who were screened for ROP in an ophthalmology department were retrospectively reviewed. Infants with a gestational age (GA) of no more than 28 weeks (n = 157) were designated group 1, those between 29 and 32 weeks (n = 572) were assigned to group 2, and those between 33 and 37 weeks (n = 523) were assigned to group 3. RESULTS: In group 1, ROP was detected in 70.0% of infants, 17.8% of whom required therapy. In group 2, ROP was detected in 41.4%, and 4.0% of those required therapy. In group 3, 18.1% were diagnosed with ROP, with 0.8% requiring treatment. CONCLUSION: Retinopathy of prematurity occurs, even among more mature infants, at a frequency that merits astute screening within parameters that reflect socioeconomic differences that appear to have an effect on the incidence.Publication Metadata only Authors' response: evaluation of choroidal thickness among patients with oculocutaneous albinism(2014) ÇERMAN, EREN; Karabas, Levent; Esen, Fehim; Celiker, Hande; Elcioglu, Nursel; Cerman, Eren; Eraslan, Muhsin; Kazokoglu, Haluk; Sahin, Ozlem