Browsing by Author "Akova-Budak, Berna"

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Comparison of central corneal thickness estimated by an ultrasonic pachymeter and non-contact specular microscopy
(Consel Brasil Oftalmologia, 2016-05-20) Çevik, Sadık Görkem; Duman, Rahmi; Çevik, Mediha Tok; Kıvanç, Serta Argun; Akova-Budak, Berna; Perente, İrfan; Duman, Reşat; Kıvanç, Serta Argun; Akova-Budak, Berna; Uludağ Üniversitesi/Tıp Fakültesi/Göz Hastalıkları Anabilim Dalı.; 0000-0003-0995-5260; AAH-6518-2021; ABE-3033-2020
Purpose: To compare central corneal thickness (CCT) measurements of healthy individuals obtained with ultrasonic pachymetry (UP) and non-contact specular microscopy (NCSM).Method: In total, 148 eyes of 74 subjects with no ocular or systemic diseases were included in the study. Central corneal thickness measurements of all patients performed with UP and NCCM were compared.Results: A total of 74 subjects (38 females) were included in this study. The mean age was 45.2 +/- 18.4 (range 12-85) years. The mean central corneal thickness of all 148 eyes was 546.9 +/- 40 mu m with UP and 510.8 +/- 42 mu m with NCSM. The mean central corneal thickness measured with NCSM was 35 mu m thinner than that measured with UP (p < 0.001). A high degree of agreement was found between the two methods (r = 0.942, p < 0.001).Conclusions: Our results suggest that NCSM measures thinner corneas than UP and that the correction formula we identified should be applied when comparing between these two devices.
Does corneal hysteresis correlate with endothelial cell density?
(Int Scientific Literature, 2015-04-29) Akova-Budak, Berna; Kıvanç, Sertaç Argün; AKOVA, BERNA; KIVANÇ, SERTAÇ ARGUN; Uludağ Üniversitesi/Tıp Fakültesi/Göz Hastalıkları Anabilim Dalı.; 0000-0003-0995-5260; AAH-6518-2021; ABE-3033-2020
Background: Our aim was to determine if there is a correlation between corneal biomechanical properties, endothelial cell count, and corneal pachymetry in healthy corneas.Material/Methods: Ninety-two eyes of all subjects underwent complete ocular examination, including intraocular pressure measurement by Goldmann applanation tonometer, objective refraction, and slit-lamp biomicroscopy. Topographic measurements and corneal pachymetry were performed using a Scheimpflug-based (Pentacam, Oculus, Germany) corneal topographer. Corneal hysteresis (CH) and corneal resistance factor (CRF) were measured with an Ocular Response Analyzer (ORA, Reichert Ophthalmic Instruments, Buffalo, NY). Endothelial cell count measurement was done using a specular microscope (CellChek, Konan, USA).Results: Right eye values of the subjects were taken for the study. The mean CH was 11.5 +/- 1.7 mmHg and the mean CRF was 11.2 +/- 1.4 mmHg. Mean intraocular pressure was 15.3 +/- 2.3 mmHg. The mean endothelial cell count was 2754 +/- 205 cells/mm(2). No correlation was found between biomechanical properties of cornea and endothelial cell count. There was a significant positive correlation between CH, CRF, and corneal thickness (p<0.001; r=0.79).Conclusions: The corneal biomechanical properties significantly correlated with corneal thickness. We found no correlation between CH and CRF with the endothelial cell density in normal subjects.
Does smartphone exposure time and smartphone sar value affect ocular surface and refractive error of the dominant eye?
(Assoc Research Vision Ophthalmology Inc, 2018-07-01) Kıvanç, Sertaç Argün; Akova-Budak, Berna; Ulusoy, Mahmut Ouz; Karatepe, Arzu Seyhan; Olcaysu, Osman Okan; KIVANÇ, SERTAÇ ARGUN; AKOVA, BERNA; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Cerrahi Tıp Bilimleri/Göz Hastalıkları; 0000-0003-0995-5260; AAH-6518-2021; ABE-3033-2020
Is ciliary muscle affected in migraine patients with aura and without aura?
(Int Scientific Information, 2015-01-02) Kıvanç, Sertaç Argün; Ulusoy, Mahmut Oğuz; Akova-Budak, Berna; Olcaysu, Osman Okan; Özcan, Muhammed Emin; KIVANÇ, SERTAÇ ARGUN; AKOVA, BERNA; Uludağ Üniversitesi/Tıp Fakültesi/Göz Hastalıkları Anabilim Dalı.; 0000-0003-0995-5260; AAH-6518-2021; ABE-3033-2020
Background: The aim of this study was to compare spherical equivalents (SE) and spherical equivalents with cycloplegic (CSE) values of migraine patients with and without visual aura, with those patients without migraine complaints.Material/Methods: We included patients over the age of 18 years, who had 20/20 uncorrected vision, and who did not have ocular pathology in their examination. The patients were divided into 3 groups: Group 1: 86 eyes of 43 migraine patients without aura, Group 2: 38 eyes of 19 migraine patients with aura, and Group 3: 60 eyes of 30 patients without migraine. Spherical equivalents and spherical equivalents with cycloplegic from the auto-refractometrical values of the patients were compared.Results: The mean age of the migraine and control patients was 34.2 +/- 8.3 and 33.6 +/- 10.8 years, respectively. Forty-three (69%) of 62 migraine patients had migraine without aura and 19 (31%) had migraine with aura. The right and left eyes of the patients were evaluated together and a significant correlation was found between the groups. To evaluate the impact of cycloplegia in patients, SE and CSE values were obtained and differences between these values were evaluated. It was found that the change in Group 2 patients was significantly lower than the change in Group 3 patients (p=0.024).Conclusions: We found that the cycloplegic spherical equivalents values of our patients with aura were lower than control patients. We need further studies to reveal whether migraine with aura is the trigger or the result of those attacks.
S100b protein levels in subretinal fluid in rhegmatogenous retinal detachment
(Taylor & Francis Inc, 2012-11) Yalçınbayır, Özgür; Büyükuysal, Rıfat Levent; Akova-Budak, Berna; Gelişken, Öner; Uludağ Üniversitesi/Tıp Fakültesi/Göz Hastalıkları Anabilim Dalı.; Uludağ Üniversitesi/Tıp Fakültesi/Farmakoloji Anabilim Dalı.; 0000-0003-0995-5260; ABE-3033-2020; AAH-6625-2021; AAH-1657-2021; 8702056700; 6602686612; 55370489800; 6602526353
Purpose: To investigate the relevance of the concentration of S100B in subretinal fluid (SRF) with the postoperative anatomical and functional success and proliferative vitreoretinopathy (PVR) formation parameters in rhegmatogenous retinal detachment (RRD). Methods: Fifty-three patients (34 male, 19 female) were included in this prospective study. Study group consisted of 46 patients who had scleral buckling (SB) surgery with the diagnosis of RRD. Control group consisted of six patients who had pars plana vitrectomy (PPV) for either full-thickness macular hole or subluxated intraocular lens. SRFs were obtained during SB surgery. Study cases were divided into three groups, corresponding to the duration of retinal detachment (DRD). Clinical characteristics including best-corrected visual acuity (BCVA), anatomical status at 6 months, the presence of postoperative PVR that resulted in recurrent detachment and any possible re-operations were recorded. The concentration of S100B was quantified by using an enzyme immunoassay test kit. Results: The concentration of S100B in SRF increased significantly after RRD. And, S100B levels were evidently elevated in concordance with DRD. There was no correlation between the concentration of SRF - S100B with preoperative or postoperative BCVA. Again, S100B levels were not related to the extent of RRD or postoperative PVR formation. Conclusion: Concentration of S100B in SRF is good marker of retinal stress and increases in concordance with DRD. However it would not help to predict the possible anatomical and functional success or postoperative PVR formation.