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Öğe A rare cause of branch retinal vein occlusion with macular sparing: Idiopathic orbital myositis: Case report(Elsevier Masson s.r.l., 2021) Cevher, Selim[No abstract available]Öğe Comparison of Intravitreal Ranibizumab and Diod Laser Photocoagulation Treatment for Retinopathy of Prematurity; Effects on Axial Lenght and Refractive Status(2019) Sukgen, Emine Alyamac; Cevher, Selim; Kocluk, YusufObjective To evaluate the effects of diode laser photocoagulation and intravitreal ranibizumab (IVR) treatments on axial lenght and refractive status development in the treatment of retinopathy of premautrity (ROP). ( Sakarya Med J 2019, 9(1):141-147 ) Materials and Methods The study included 82 eyes of 41 patients who were 1 year adjusted age, underwent primarily diode laser photocoagulation or 0.25 mg/0.025 ml IVR. Axial lenght (AL) and spherical equivalent (SE) parameters were compared. Results Patients divided into two groups. Group 1 had 34 eyes of 17 patients who underwent IVR treatment and group 2 had 48 eyes of 24 patients who underwent diode laser photocoagulation treatment. In group 1, AL were detected 19,86 1,104mm in right eyes and 19,73 1,062mm in left eyes. In group 2, AL were detected 19,90 0,83mm in right eyes and 19,86 0,842mm in left eyes (p>0.05). In group1 and 2, SE values were detected 0.44 2.053D and -0.02 3.07D in right eyes and 0.59 2.063D and -0.17 2.8 in left eyesD, respectively ( p>0.05). There was no statistically significant differences between two groups about AL and SE values. Conclusion Myopia is seen higher in patients with ROP than healthy patients. Although using anti vascular growth factor in ROP has been increased last years, diode laser photocoagulation is the gold standart therapy. In our study we compared the effects of diode laser photocoagulation and IVR on AL and SE. We did not find any statistically significant difference. Further evaluation is needed.Öğe Disc–fovea distance and choroidal thickness: is there a relationship?(SAGE PUBLICATIONS LTD, 2022) Cevher, Selim; Üçer, Mehmet Barış; Şahin, TayfunBackground: The distance between the optic disc center and the fovea is a biometric parameter; however, it is unclear whether DFD (disc–fovea distance) affects the choroidal thickness. Objective: The aim of this study is to investigate the association between DFD and choroidal thickness. Design: This is a prospective, and cross-sectional study. Methods: Two hundred fifty eyes of 250 healthy participants were examined in terms of DFD, age, axial length, spherical equivalent, and choroidal thickness. Inclusion criteria included aged between 20–40 years, no posterior segment disorders, and participants with best-corrected visual acuity (10/10 according to Snellen’s chart). Participants with high hypermetropia (>4 diopter) or myopia (>6 diopter) or any systemic disease likely to affect choroidal thickness were excluded. Choroidal thickness measurements were performed at subfoveal, 1.0 mm temporal, and 1.0 mm nasal using the enhanced-depth imaging optical coherence tomography. Results: The mean age of all the participants was 26.21?±?5.73 years, mean DFD was 4634.29?±?274.70 µm, mean axial length was 23.62?±?0.83 mm, and mean spherical equivalent was ?0.61?±?1.06 diopter. The mean subfoveal, nasal, and temporal choroidal thicknesses were 388.73?±?90.15 µm, 351.26?±?88.09 µm, and 366.50?±?79.56 µm, respectively. A negative correlation was found between subfoveal, nasal, and temporal choroidal thicknesses and axial length (r?=??0.157, p?=?0.013; r?=??0.168, p?=?0.008; r?=??0.174, p?=?0.006, respectively). Insignificant correlation was found between choroidal thicknesses and spherical equivalent (p?>?0.05). There was not a statistically significant correlation between DFD and subfoveal, nasal, and temporal choroidal thicknesses (r?=??0.028, p?=?0.655; r?=?0.030, p?=?0.641; r?=??0.025, p?=?0.699, respectively). In addition, there was not a statistically significant correlation between age and choroidal thickness. Conclusion: This study shows that DFD and spherical equivalent do not affect choroidal thickness; axial length negatively affects choroidal thickness. In addition, age does not affect choroidal thickness between 20 and 40 years.Öğe Does anisometropia affect the ciliary muscle thickness? An ultrasound biomicroscopy study(Springer, 2020) Cevher, Selim; Sahin, TayfunPurpose To compare the ciliary muscle thickness (CMT) of the normal fellow eye to that of the amblyopic eye using ultrasound biomicroscopy (UBM) in patients with unilateral anisometropic amblyopia. Methods Thirty patients with unilateral anisometropic amblyopia were involved. The patients were divided into two groups: 19 hyperopic and 11 myopic. Axial length (AL) was measured with optic biometry and anterior chamber depth (ACD), iris area, and CMT were measured with UBM. Results The mean age was 34.10 +/- 6.61 years. The mean spherical difference between two eyes was 2.59 diopter (D) in hyperopic patients and 3.77D in myopic patients. In the hyperopic patients, nasal CMT1(nCMT), temporal CMT1(tCMT), tCMT2, and tCMT3 values were statistically thinner in amblyopic eyes than healthy eyes (p = 0.036,p = 0.003,p = 0.023,p = 0.005, respectively). ACD values were statistically lower in amblyopic eyes (2.78 +/- 0.26 mm) than healthy eyes (2.90 +/- 0.21 mm) (p < 0.001). In the myopic patients, nCMT1, nCMT2, nCMT3, tCMT1, tCMT2, and tCMT3 values were statistically thicker in amblyopic eyes than healthy eyes (p = 0.003,p = 0.003,p = 0.005,p = 0.003,p = 0.003,p = 0.019, respectively). ACD values were statistically higher in amblyopic eyes (3.20 +/- 0.30 mm) than healthy eyes (3.06 +/- 0.29 mm) (p = 0.004). Also, there was no significant difference in the iris area between the amblyopic and normal eyes of the myopic and hyperopic patients (p > 0.05). Conclusions Amblyopic eyes in patients with unilateral myopic anisometropia have thicker CMT and deeper ACD than healthy eyes. Conversely, amblyopic eyes in patients with unilateral hyperopic anisometropia have thinner CMT and shorter ACD than healthy eyes. There is a positive correlation between AL and CMT.Öğe Does Rosacea, a localized skin disease, affect the choroidal thickness?(Wiley, 2021) Sahin, Tayfun; Oztekin, Aynure; Cevher, SelimIntroduction This study aims to compare the choroidal thickness (CT) of patients with rosacea with healthy individuals. Methods This study was conducted with 42 patients with Papulopustular Rosacea (PPR), 38 patients with Erythematotelangiectatic Rosacea (ETR), and gender and age-matched 37 healthy individuals in the control group. CT measurements were done using the spectral-domain optical coherence tomography. Results Choroidal thickness means were measured as 352 +/- 78 mu m, 331 +/- 67 mu m, and 346 +/- 83 mu m at the subfoveal region; 323 +/- 72.3 mu m, 303.5 +/- 68.4 mu m, and 314 +/- 80.3 mu m at 1000 mu m nasal; and 325.2 +/- 71 mu m, 304.4 +/- 52.2 mu m, and 309 +/- 67 mu m at 1000 mu m temporal in the PPR, ETR, and control groups, respectively (p > 0.05). Conclusion Although rosacea is a common chronic skin disease that could have systemic findings, CT is not affected by this disease.Öğe How does anisometropia affect the choroidal vascularity index?(WOLTERS KLUWER MEDKNOW PUBLICATIONS, 2022) Cevher, Selim; Şahin, TayfunPurpose: To investigate the choroidal vascularity index (CVI) and morphological features of the choroid in anisometropic amblyopia. Methods: In this prospective cross sectional study, 39 patients with unilateral anisometropic amblyopic patients and 33 eyes of 33 healthy control participants were involved. These participants were examined in terms of axial length (AL), spherical equivalent (SE), central macular thickness (CMT), choroidal thickness (CT), total choroidal area (TCA), luminal area (LA), stromal area (SA), LA/SA ratio, and CVI. All parameters were compared between amblyopic eyes, healthy fellow eyes, and healthy control eyes. The Shapiro–Wilk tests, Chi square test, the paired t test, Wilcoxon signed rank test, Mann–Whitney U test, Kruskal–Wallis test, and Pearson/Spearman correlation tests were used. Results: In the hyperopic patients; SE, subfoveal CT, nasal CT, temporal CT, TCA, LA, SA, and CMT were greater in amblyopic eyes than in healthy fellow eyes and control eyes (P < 0.001, P < 0.001, P < 0.001, P < 0.001, P < 0.001, P < 0.001, and P < 0.001, respectively), and CVI, LA/SA ratio, and AL were smaller in amblyopic eyes than in healthy fellow eyes and control eyes ([P < 0.001, P = 0.006], P < 0.001, and P < 0.001, respectively). In the myopic patients, subfoveal CT, nasal CT, temporal CT, TCA, LA, SA values were statistically smaller in amblyopic eyes than in healthy eyes and control eyes ([P < 0.001, P = 0.002), [P = 0.004, P = 0.012], [P = 0.012, P = 0.032], [P < 0.001, P = 0.013], [P < 0.001, P = 0.024], and [P < 0.001, P = 0.047], respectively). The differences in the AL and choroidal parameters were due to myopia and hyperopia. Conclusion: The choroidal structural parameters of the amblyopic eyes were different from that of the healthy eyes.Öğe How does nepafenac affect the choroidal thickness after uneventful cataract surgery?(Sage Publications Ltd, 2020) Cevher, Selim; Aydogdu, GulcinPurpose: To investigate the effects of topical nepafenac on choroidal thickness (CT) following uneventful phacoemulsification surgery (UPS) using enhanced depth imaging optical coherence tomography (EDI-OCT). Methods: This prospective study included 45 randomly selected eyes (23 eyes of 23 patients used nepafenac (nepafenac group) and 22 eyes of 22 control patients did not use nepafenac (nepafenac-free group)) undergoing small-incision UPS. All participants underwent full ophthalmologic examination. CT measurements were performed at subfoveal, 1.0 mm temporal, and 1.0 mm nasal using the EDI-OCT preoperatively, 1 day, 1 week, and 1 month postoperatively. Results: The mean subfoveal, nasal, and temporal CT in the nepafenac-free group had changed from 268.95 +/- 63.59 mu m to 283.36 +/- 65.63 mu m, 237.22 +/- 64.09 mu m to 253.09 +/- 67.27 mu m, and 235.95 +/- 75.22 mu m to 259.09 +/- 63.66 mu m preoperatively to 1 month postoperatively, respectively (p < 0.001, p < 0.001, p < 0.001, respectively). The mean subfoveal, nasal, and temporal CT in the nepafenac group had changed from 259.65 +/- 55.99 mu m to 276.65 +/- 59.21 mu m, 236.34 +/- 55.40 mu m to 251.00 +/- 62.39 mu m, and 247.56 +/- 50.88 mu m to 261.13 +/- 53.73 mu m preoperatively to 1 month postoperatively, respectively (p < 0.001, p < 0.001, p < 0.001, respectively). The postoperative CT continued to increase significantly during the follow-up period in two groups. However, compared to the change from baseline to month 1, there was not a statistically significant difference between the groups at subfoveal, nasal, and temporal CT (p: 0.633, p: 0.865, and p: 0.328, respectively). Conclusion: UPS may cause a significant increase in CT. Although increasing in the CT was lower in the nepafenac group than the nepafenac-free group, there was not a statistically significant difference between the groups.Öğe Laser cutting machine-induced maculopathy and spontaneous recovery(CONSEL BRASIL OFTALMOLOGIA, 2022) Cevher, SelimThe thermal effects of laser cutting machines could damage the macula. A few studies in the literature have described macular injury induced by industrial laser burns. The aim of this study was to report the clinical, visual, and optical coherence tomography findings in a gold refinery worker with laser-induced maculopathy. A 21-year-old male gold refinery worker had vision loss in his right eye after using a laser cutting machine without wearing laser eye protection gear. At the first visit (24 h later), his best-corrected visual acuity was 7/10 in the right eye and 10/10 in the left eye. The anterior segment examination was normal. In fundus examination, focal, round, and yellowish lesion was detected within the fovea. The optical coherence tomography findings were foveal outer retinal disruptions and irregularities extending from the outer plexiform layer to the retina pigment epithelium. After 4 months, the best-corrected visual acuity had improved to 1.0, and the optical coherence tomography findings had resolvedÖğe Low Serum Magnesium Level Can be a Risk Factor for Retinopathy in Diabetic Patients: A Cross-Sectional Controlled Study(Galenos Yayincilik, 2021) Bankir, Mehmet; Keskek, Nedime Sahinoglu; Saler, Tayyibe; Keskek, Sakir Ozgur; Cevher, SelimAim: Uncontrolled diabetes can lead to complications which are related to high blood sugar and insulin resistance (IR). A decrease in serum magnesium (Mg) levels can cause an increase in IR and a worsening of glycaemic control. In this study, we aimed to investigate the relationship between diabetic retinopathy (DR) and serum Mg levels. Methods: The study was designed as a cross-sectional study in the internal medicine department of a tertiary referral center (Adana Numune Training and Research Hospital) in Turkey. A total of 554 subjects, including 176 patients with DR patients, 209 patients without DR, and 169 healthy individuals were included in this study. Serum fasting glucose levels, insulin levels, homeostasis model assessment of insulin resistance (HOMA-IR), HbA1c percentages, and Mg levels were measured for all subjects. Results: Serum Mg level was lower in patients with DR (p<0.001). Furthermore; HOMA-IR, HbA1c and fasting glucose levels were higher in patients with DR (p<0.001, respectively). Incidence of DR was associated with serum Mg levels (odds ratio: 2.1, confidence interval: 95% 1.2-3.6, p=0.005). Conclusion: Low Mg level can lead to retinopathy by impairing glucose homeostasis. In patients with diabetes, Mg levels should be checked since Mg may be a supporting treatment.Öğe Macular thickness and retinal nerve fiber thickness analysis in ocular dominance(Sociedade Brasileira de Oftalmologia, 2018) Cevher, Selim; Koçluk, Yusuf; Çetinkaya, Savaş; Alyamaç Sukgen, EmineObjective: To compare macular and peripapillary retinal nerve fiber layer thicknesses of dominant eye and non-dominant eye using optical coherence tomography (OCT). Methods: 104 eyes of 52 healthy young adults were included. Ophthalmological examinations; including measuring refraction, best corrected visual acuity, intraocular pressure (IOP) measurement, slit-lamb biomicroscopy, dilated fundus examination, measuring of central macular thickness (CMT), and peripapillary retinal nerve fiber layer (PRNFL) thickness were performed on each subject. Hole-in-the-card test was used to detect the ocular dominance.Results: There were 25 females (48%) and 27 males (52%) in the study. Eight participants had left eye dominance (15%), forty-four participants had right eye dominance (85%). Mean CMT was 192.5µm in dominant group and 191.9 µm in non-dominant group. There was no statistically significant difference between dominant eye group and non-dominant eye group in either macular thickness or peripapillary retinal nerve fiber layer thickness. Conclusions: No difference between macular and peripapillary retinal nerve fiber layer thicknesses were detected in dominant and non-dominant groups. Further evaluation is needed. © 2018 Sociedade Brasileira de OftalmologiaÖğe Unusual ocular manifestations of ethomoidal mucocele: a case report(CONSEL BRASIL OFTALMOLOGIA, 2024) Cevher, Selim; Elkıran, Serdar AliA 42-year-old female patient had vision loss and chronic epiphora in her left eye. Her best-corrected visual acuity was 10/10 in the right eye and 0.3/10 in the left eye. The anterior segment examination results were normal. In fundus examination, choroidal folds were detected. Optical coherence tomography showed elevation on the macula and choroidal folds. Ultrasonography revealed a T-sign. Magnetic resonance imaging revealed an ethmoidal mucocele that compresses the orbital tissues. Surgical treatment was performed in the otorhinolaryngology department. Postoperatively, choroidal folds recovered, and the best-corrected visual acuity improved, but subretinal fluid accumulated. During the follow-up period without any treatment, subretinal fluid totally disappeared.
