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Öğe Anatomic and functional results of macular hole surgery with silicone oil tamponade(2013) Bakbak B.; Öztürk B.T.; Gönül S.; Gedik S.Purpose: To review the anatomical and visual outcomes in patients who underwent macular hole surgery with silicone oil tamponade. Materials and Methods: A retrospective review of 21 patients who had undergone macular holes surgery with silicone oil tamponade was conducted The primary outcome variables include best-corrected visual acuity (BCVA) in Early Treatment of Diabetic Retinopathy Study (ETDRS) letters and optical coherence tomography changes in eyes with a macular hole after the surgery. Results: The median age of 21 patients was 58.32 years. Thirteen patients had Stage 3 macular holes and eight patients had Stage 4 macular holes. Anatomical closure rate was achieved in 90.4% (19/21) of all patients. The median preoperative BCVA was 31.2 ETDRS letters (range: 13-52 letters), which increased to 42.9 ETDRS letters (range: 27-74 letters), six weeks following the removal of the silicone oil. Conclusion: Our study with 21 patients indicates that the use of silicone oil tamponade in macular hole surgery showed satisfactory anatomical and functional outcomes. As an alternative to gas tamponade, silicone oil can be used for primary macular hole surgery in patients that are unable to position themselves in a face-down posture after surgery.Öğe The effects of smoking on anterior segment parameters, retinal nerve fiber layer, and pupillary functions [Sigarani{dotless}n ön segment parametreleri, retinal sinir lifi tabakasi{dotless} ve pupil fonksiyonlari{dotless} üzerine etkileri](Turkish Ophthalmology Society, 2014) Köktekir B.E.; Gönül S.; Bakbak B.; Gedik S.; Marako?lu K.Objectives: To evaluate the alterations in the anterior segment parameters, retinal nerve fber layer, and pupillary functions in smokers. Materials and Methods: In this case-control study, 45 eyes of 45 smokers and 45 eyes of 45 non-smoker control subjects were evaluated. All patients underwent measurement of anterior segment parameters with optical low coherence refectometry (OLCR), mesopic and photopic pupillary diameter with an aberrometer device, retinal nerve fber layer thickness with optical coherence tomography, and dry-eye assessment with Schirmer's test. The results were compared with independent t-test by SPSS 16.0 Inc., and a p-value lower than 0.05 was determined as signifcant. Results: There was a signifcant difference between both groups in terms of mesopic pupil diameters that were measured with both OLCR and aberrometer device (p=0.03 and 0.02, respectively). Schirmer scores were also signifcantly decreased in smokers (p=0.001). The other measured parameters demonstrated no difference between smokers and non-smokers (p>0.05 for all). Conclusion: Smoking may affect pupillary functions, especially the mesopic pupillary diameter, and may cause a defciency in pupil response under dark circumstances.Öğe Is it possible to replace automated keratometry with current devices: Comparison with lenstar and OPD II [Yeni cihazlar otomatize keratometre yerine kullanılabilir mi? Lenstar ve OPD ile karşılaştırılması](Turkish Ophthalmology Society, 2013) Köktekir B.E.; Gedik S.; Bakbak B.; Gönül S.; Do?an O.K.Purpose: To compare the keratometry results obtained with optical low-oherence reflectometer, corneal topography, and automated keratometry readings and to assess the interexaminer reproducibility of each device. Ma te ri al and Met hod: This comparative study examined 65 eyes of 65 healthy subjects. Detailed ophthalmic examination was performed in all cases following keratometry measurements with a KR 8100A (Topcon, Japan), an OPD Scan II (Nidek, Japan), and a LenStar LS900 (Haag-Streit, Switzerland). Patients with spheric values over ±3.0D or cylindric values over ±1.0D and with history of chronic ocular/systemic disease or contact lens usage were excluded from the study. The keratometry readings were compared by using ANOVA test (SPSS 16.0). A p-value lower than 0.05 was taken as statistically significant. Bland-Altmann analysis was used to demonstrate agreement between methods, and Spearman rank correlation coefficient (r) was calculated for the correlation. To assess the interexaminer reproducibility, intraclass correlation coefficient was calculated in 30 eyes for each device. Re sults: The mean age of the 65 patients enrolled in the study was 21.9±3.25 years. The mean keratometric values obtained with the autorefractokeratometer, OPD Scan II, and LenStar LS 900 were 43.30±1.47, 43.42±1.44, and 43.29±1.42 respectively. No statistically significant difference was observed among the three groups (p=0.840). Interexaminer intraclass correlation was found as 78.9%, 99.9%, and 99.7% for ARK, OPD, and LenStar, respectively. Dis cus si on: LenStar has provided comparable and well-correlated keratometry measurements in comparison with automated keratometer and corneal topography.Öğe Tonic pupil following traumatic hyphema: Case report [Travmatik hifema sonrası gelişen tonik pupilla: Olgu sunumu](Turkish Ophthalmology Society, 2013) Gönül S.; Köktekir B.E.; Bakbak B.; Gedik S.; Beyo?lu A.A 7-year-old girl was admitted to our clinic after crash injury with air gun pellet in her right eye. There was an intense anterior chamber reaction and hyphema on the biomicroscopic examination. During the control examination after treatment of hyphema including cyclopentolate 1%, prednisolone acetate 1% and lomefloxacin 0.3%, anisocoria and mydriasis in the right eye were observed and the difference between both pupils was less in darkness. The case was diagnosed as tonic pupil following trauma, and diluted pilocarpine 0.125% test was performed. On diluted pilocarpine test, right pupil responded excessively to pilocarpine compared with the other pupil. As in our case, in cases with anisocoria following blunt trauma to orbit, tonic pupil should be keep in mind.
