Tıp Fakültesi / Faculty of Medicine
Permanent URI for this collectionhttps://hdl.handle.net/11727/1403
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Item Assessment of Tear Meniscus with Optical Coherence Tomography in Thyroid-Associated Ophtalmopathy(2014) Sizmaz, Selcuk; Altan-Yaycioglu, Rana; Bakiner, Okan Sefa; Bozkirli, Emre; Coban-Karatas, Muge; Ulas, Burak; https://orcid.org/0000-0002-9139-8848; 24215623; AAG-3306-2019; AAK-5525-2021; E-9887-2014; AEP-4897-2022Purpose: To evaluate the tear-film meniscus with optical coherence tomography (OCT) in patients with Graves' disease (GD). Materials and methods: Patients with GD without clinical features of thyroid-associated ophthalmopathy (TAO) (Group 1, n = 35), patients with signs of TAO (Group 2, n = 31) and healthy participants (Group 3, n = 31) were enrolled. Palpebral fissure width, Schirmer test, tear break-up time (TBUT) test and tear-film meniscus height and area obtained with Fourier-domain-OCT were analyzed. Results: TBUT test scores were 8 s (2-25) in Group 1, 8 s (2-15) in Group 2 (p = 0.380); and10 s (5-17) in Group 3 (p = 0.000 Group 1 versus 3, and 0.000 for Group 2 versus 3). Tear-film meniscus height did not significantly differ between Groups 1 and 2 (257.5 mm (86-962) and 258 mm (99-1340), respectively, p = 0.980). In Group 3, tear-film meniscus height was 316 mm (122-720) (p = 0.005 Group 1 versus 3 and 0.004 for Group 2 versus 3). Tear-film meniscus area did not significantly differ between Groups 1 and 2 (0.025mm(2) (0.004-0.250) and 0.024mm(2) (0.003-0.316), respectively, p = 0.850). In Group 3, tear-film meniscus area was 0.048mm(2) (0.006-0.75) (p = 0.000 Group 1 versus 3 and 0.000 for Group 2 versus 3). Conclusion: Tear function is significantly disturbed in GD. OCT is an effective way to assess the tearing function also in patients with GD.Item Interexaminer Reproducibility of Optical Coherence Tomography for Measuring the Tear Film Meniscus(2014) Canan, Handan; Altan-Yaycioglu, Rana; Ulas, Burak; Sizmaz, Selcuk; Coban-Karatas, Muge; https://orcid.org/0000-0002-5877-6536; https://orcid.org/0000-0002-9139-8848; 24749829; AAB-6394-2021; AAG-3306-2019Purpose: New optical coherence tomography (OCT) devices with anterior segment module are able to measure the tear meniscus height (TMH) and tear meniscus area (TMA). Since the borders of the area and the height are to be marked by an examiner, the measurements are prone to be subjective. Herein, we aimed to evaluate the interexaminer reproducibility of the tear meniscus measurements with OCT. Materials and Methods: In this prospective cross-sectional study, both eyes of 300 consecutive patients with and without dry eye were studied. Following routine ophthalmologic examination, tear-film OCT images were obtained. Two examiners, who were unaware of the other examiner's results, measured the TMH (i. e. the line connecting the intersection of the meniscus with the cornea/sclera and eyelid) and cross-sectional TMA. The reliability and correlation of the two examiners' results were assessed. Results: Four right and six left eyes were excluded from the final analysis, so a total of 590 eyes were evaluated. The mean difference of the two examiners' measurements of both eyes was - 0.001 +/- 0.027mm(2) in TMA, and - 21.29 +/- 39.95 mm in TMH. An agreement between the two examiners was found regarding TMA and TMH measurements for right and left, as well as both eyes (Cronbach's alpha > 0.900, for all). Also, the correlation between both variables was high (inter item correlation matrix > 0.840, for all). Conclusions: We showed a strong statistical agreement for both TMA and TMH measurements. According to our results, we believe that FD-OCT device is dependable in measuring the TMA and TMH values, given that its results are reproducible.Item Efficacy of Topical 0.05% Cyclosporine Treatment in Children with Severe Vernal Keratoconjunctivitis(2014) Coban-Karatas, Muge; Ozkale, Yasemin; Altan-Yaycioglu, Rana; Sizmaz, Selcuk; Pelit, Aysel; Metindogan, Sevda; Canturk-Ugurbas, Silay; Aydin-Akova, Yonca; https://orcid.org/0000-0003-3009-336X; https://orcid.org/0000-0002-9139-8848; https://orcid.org/0000-0002-0662-2033; 25818961; AAL-6136-2021; AAL-4440-2020; F-2809-2015We aimed to determine the efficacy of topical cyclosporine in children with vernal keratoconjunctivitis refractory to topical mast cell stabilizer and antihistamine therapy. Thirty-one patients, 24 boys and 7 girls younger than 16 years of age, were included in the study. All patients were scored on a four-point scale from 0 to 3 for symptoms and signs. Each patient received topical cyclosporine 0.05% emulsion (Restasis, Allergan Inc., Irvine, CA, USA) four times daily in addition to preservative-free artificial tears and was followed for 6 months. The data was recorded before the initiation of treatment (day 0) and at the 1st, 3rd, and 6th months following treatment. After six months of treatment, severity of all symptoms and signs showed a statistically significant decrease (p<0.05). Patients did not report any serious adverse effects. Topical cyclosporine 0.05% emulsion treatment is a safe and effective treatment option for controlling the symptoms and signs of vernal keratoconjunctivitis in children.Item Influence of Glycosylated Hemoglobin on The Choroidal Thickness(2018) Sahinoglu-Keskek, Nedime; Altan-Yaycioglu, Rana; Canan, Handan; Coban-Karatas, Muge; https://orcid.org/0000-0001-8544-103X; https://orcid.org/0000-0002-9139-8848; https://orcid.org/0000-0002-5877-6536; https://orcid.org/0000-0002-5877-6536; 28766280; T-4258-2017; AAG-3306-2019; AAB-6394-2021; AAB-6394-2021PurposeThe aim of the study reported here was to assess the influence of serum HbA1c levels on foveal choroidal thickness in diabetic patients.MethodsA total of 122 eyes from 122 patients who had type 2 DM were studied in this prospective, cross-sectional study. Patients were divided into three groups: 43 patients (43 eyes) without diabetic retinopathy (NDR), 39 patients (39 eyes) with diabetic retinopathy and no macular edema (DR/ME-), 40 patients (40 eyes) with diabetic retinopathy and macular edema (DR/ME+). Central foveal thicknesses and subfoveal choroidal thicknesses were noted. Subfoveal choroidal thickness measurement was taken perpendicularly from the outer part of the retinal pigment epithelial layer to the line corresponding to the choroidal-scleral junction. Serum glycosylated hemoglobin (HbA1c) levels were evaluated.ResultsNo significant differences in age, gender, pseudophakia were observed between the groups. There was no significant difference in HbA1c value among the three diabetic groups. Mean foveal choroidal thickness was 270.0942.41 in NDR group, 243.18 +/- 30.21 in DR/ME- group and 250.90 +/- 40.06 in DR/ME+ group. Mean foveal choroidal thickness in NDR group was significantly different from DR/ME- group. There was no statistically significant difference between the other groups among foveal choroidal thicknesses. There was no correlation between HbA1c and foveal choroidal thickness. Multiple regression analyses of two diabetic retinopathy groups showed no significant correlation between foveal choroidal thickness and HbA1c and also no significant correlation between foveal choroidal thickness and duration of diabetes.Conclusions p id="Par4Serum HbA1c levels were not correlated with foveal choroidal thickness. Choroidal thickness is effected by several factors as axial length, age and systemic diseases.Item Measurements of Retinal Nerve Fiber Thickness and Ganglion Cell Complex in Neurofibromatosis Type 1, with and Without Optic Pathway Gliomas: A Case Series(2018) Sahinoglu-Keskek, Nedime; Altan-Yaycioglu, Rana; Canan, Handan; Coban-Karatas, Muge; Erbay, Ayse; Yazici, Nalan; Alkan, Ozlem; https://orcid.org/0000-0001-8544-103X; https://orcid.org/0000-0002-9139-8848; https://orcid.org/0000-0002-5877-6536; https://orcid.org/0000-0001-7526-3460; 29185816; T-4258-2017; AAG-3306-2019; AAB-6394-2021; AAM-5138-2021; AAM-4169-2021Purpose: The aim of this study was to investigate differences in retinal nerve fiber layer (RNFL) and ganglion cell complex (GCC) thicknesses in neurofibromatosis 1 (NF1) cases, with and without optic pathway gliomas (OPGs). Materials and Methods: In total, 33 eyes of 33 subjects were evaluated in this prospective observational case series. Twenty-one patients with a diagnosis of NF1 were enrolled. Patients with NF1 and OPGs were included in Group 1 (n=9), and patients with NF1 without OPGs were included in Group 2 (n=12). The control group (Group 3) was comprised of 12 age- and sex-matched subjects with no history of ophthalmic or systemic diseases. All of the subjects underwent complete ophthalmic examinations, including best-corrected visual acuity (BCVA), slit lamp microscopy, and indirect ophthalmoscopy. Additionally, optical coherence tomography (OCT) measurements were obtained. Results: There were no statistically significant between-group differences in age and sex (p=0.227 and 0.986, respectively). The average RNFL thickness in Group 1 (NF1 patients with OPGs) was significantly lower than in Groups 2 and 3 (86.6 +/- 22.5, 107.4 +/- 6.65, and 108.4 +/- 5.05 mu m, respectively; p=0.001). Furthermore, the average GCC thickness in Group 1 was significantly lower than in Groups 2 and 3 (78.6 +/- 16.3, 94.8 +/- 3.55, and 94.9 +/- 3.82 mu m, respectively; p<0.001). Conclusions: Both RNFL and GCC thicknesses were significantly lower in NF1 patients with OPGs. The use of OCT to quantify damage to the visual pathway may enable earlier detection of OPGs in NF1 patients.Item An Unusual Case with Unilateral Epithelial Basement Membrane Detachment(2019) Altan-Yaycioglu, Rana; 30303747; AAL-4440-2020; AAG-3306-2019Purpose: To present a case with unusual epithelial basement membrane detachment.Methods: A 29-year-old female presented with blurred-vision and pain in left-eye for 2 months. Slit-lamp showed almost total bullous epithelial detachment with subepithelial fluid, and intraocular pressure rise. Recurrences were observed, despite repeated epithelial debridement and topical medication.Results: Decrease in corneal endothelial cell density and changes resembling cytomegalovirus (CMV) keratitis were noted on specular microscopy. PCR for CMV came negative; however, we had success with topical gancyclovir and steroids, in addition to topical antiglaucomatous agents and artificial tears. During the following 12 months, no recurrence was observed.Conclusion: According to her clinic and response to medication, we believe that this case represents an atypical form of CMV endotheliitis.