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Öğe Comment on Early Results of Slanted Recession of the Lateral Rectus Muscle for Intermittent Exotropia with Convergence Insufficiency(Hindawi Ltd, 2016) Ceylan, Osman Melih; Ayyildiz, Onder; Gokce, Gokcen; Mutlu, Fatih Mehmet[Abstract Not Available]Öğe Comment on Exotropia Is the Main Pattern of Childhood Strabismus Surgery in the South of China: A Six-Year Clinical Review(Hindawi Ltd, 2016) Ayyildiz, Onder; Ceylan, Osman Melih; Mutlu, Fatih Mehmet[Abstract Not Available]Öğe Comment on: Learning curves for strabismus surgery in two ophthalmologists(Medknow Publications & Media Pvt Ltd, 2016) Ceylan, Osman Melih; Ayyildiz, Onder[Abstract Not Available]Öğe Comment on: The effect of anterior transposition of the inferior oblique muscle on eyelid configuration and function(Medknow Publications & Media Pvt Ltd, 2016) Ayyildiz, Onder; Ceylan, Osman Melih; Mutlu, Fatih Mehmet[Abstract Not Available]Öğe Comparison of intravitreal ranibizumab and bevacizumab treatment for retinopathy of prematurity(Consel Brasil Oftalmologia, 2016) Ceylan, Osman Melih; Dikci, Seyhan; Genc, Oguzhan; Yilmaz, Turgut[Abstract Not Available]Öğe Comparison of Nd:YAG laser (532 nm green) vs diode laser (810 nm) photocoagulation in the treatment of retinopathy of prematurity: an evaluation in terms of complications(Springer London Ltd, 2020) Dikci, Seyhan; Demirel, Soner; Firat, Penpe Gul; Yilmaz, Turgut; Ceylan, Osman Melih; Bag, Harika Gozde GozukaraPurpose To compare the anterior and posterior segment complications of diode (810 nm) laser photocoagulation (LPC) and Nd:YAG (532 nm green) LPC in the treatment of retinopathy of prematurity (ROP). Patients and methods The 84 eyes of 43 patients treated with diode LPC (group 1) and 58 eyes of 31 patients treated with Nd:YAG LPC (group 2) for ROP in our clinic were enrolled in the study. Medical records of all patients were investigated retrospectively. The patients in each group were examined in terms of birth weights, gestational weeks, stage of retinopathy, number of lasers pots, laser parameters, and anterior and posterior complications of LPC. Results The mean birth weeks of group 1 patients were postmenstrual 27.7 +/- 2.5 (23-33), while the mean birth weights were 1006.0 +/- 334.5 (540-1980) grams. The mean birth weeks of group 2 patients were postmenstrual 27.4 +/- 2.6 (23-33), while the mean birth weights were 1073.8 +/- 329.2 (480-1720) grams. The mean numbers of laser spots were 1036.0 +/- 515.2 (430-2410) in group 1 per eye, while the mean numbers of laser spots were 1085.4 +/- 526.0 (445-2530) in group 2 per eye (p >= 0.05). Additional laser application was performed in four eyes (4.8%) in group 1 and four eyes (6.9%) in group 2. Four eyes (4.8%) treated with diode LPC and one eye (1.7%) treated with Nd:YAG laser developed retinal detachment. Two eyes of a patient (3.4%) applied Nd:YAG LPC developed cataract. Conclusion Cataract may develop when Nd:YAG laser is used; however, posterior segment complications may be more likely to appear with the use of diode laser in these cases.Öğe Is contrast sensitivity a physiological marker in attention-deficit hyperactivity disorder?(Elsevier, 2020) Donmez, Yunus Emre; Ozcan, Ozlem Ozel; Cankaya, Cem; Berker, Merve; Atas, Pamuk Betul Ulucan; Gunturkun, Pelin Nazli; Ceylan, Osman MelihAttention-deficit hyperactivity disorder (ADHD) is one of the most common childhood-onset psychiatric disorders. Although the etiology is complex and has not yet been clarified, dopamine is thought to play a role in the etiology. Methylphenidate (MPH) is a psychostimulant drug used as first-line treatment for ADHD and it inhibits dopamine and norepinephrine reuptake transporters. Dopamine also has an effect on retina and contrast sensitivity. Despite evidence indicating the effects of dopamine on contrast sensitivity, the results of studies examining contrast sensitivity in ADHD patients are inconsistent. Also, no studies have been encountered examining the possible effect of MPH on contrast sensitivity. The hypotheses of this study are that children with ADHD who have not used MPH will have lower contrast sensitivity levels than the members of the control group, that contrast sensitivity levels increase after the use of MPH, and that contrast sensitivity is a potential physiological marker for ADHD. The study was conducted with 30 children with ADHD and 30 children without ADHD. Psychiatric evaluations of the participants were conducted with the Schedule for Affective Disorders and Schizophrenia for School Age Children-Present and Lifetime-Turkish version, Conner's Parent Rating Scale-Revised Short form and the Turgay DSM-IV-based Child and Adolescent Behavioral Disorders Screening and Rating Scale. Photopic contrast sensitivity was measured using the Functional Acuity Contrast Test (FACT). Results showed that FACT mean values of the control group were significantly higher than those of the ADHD group (pre-treatment) in all spatial frequencies. In four spatial frequencies (CPD 1.5, 3, 12 and 18), the FACT mean values of the control group were significantly higher than the ADHD group (during the OROS-MPH treatment). At all spatial frequencies, the mean values of the ADHD group during the OROS-MPH treatment were significantly higher than before the OROS-MPH treatment. In conclusion, the present study showed that contrast sensitivity is low in children with ADHD and increases significantly after OROS-MPH medication, but still did not reach the levels of the children without ADHD. Our findings suggest that contrast sensitivity may be a potential physiological marker in ADHD.Öğe Pre-, intra- and post-operative management in phacoemulsification surgery for completely monocular cases(2019) Dikci, Seyhan; Demirel, Soner; Fırat, Penpe Gül; Öztürk, Emrah; Türkoğlu, Elif Betül; Ceylan, Osman Melih; Yılmaz, Turgut; Gündüz, Abuzer; Gözükara Bağ, HarikaAbstract: Aim: To evaluate the results of phacoemulsification (PE) surgery in completely monocular cases and to emphasize the important points in the pre-, intra- and post-operative periods. Material and Methods: A total of 42 patients who had no light perception in one eye and had underwent PE surgery in the other eye at our clinic between January 2014 and March 2016 were included in the study. The charts of the patients were evaluated retrospectively. The age and gender of the cases, whether there was an additional pathology in the eye undergoing surgery, the reason of visual loss in the other eye, the type of anesthesia used, pre- and post-operative best corrected visual acuity (BCVA) with the Snellen chart, intraocular pressure and intra- and post-operative complications were investigated. Results: There were17 (40.5%) female and 25 (59.5%) male patients with a mean age of 74.2±10.5 (45-93) years. The most common causes of the monocular state were glaucoma, cataract and trauma, the most common accompanying pathologies in the eyes undergoing cataract surgery were glaucoma, zonular weakness and age-related macular degeneration. Mean BCVA was 0.07±0.1 (0.01-0.4) pre-operatively and 0.5±0.3 (0.01-1) post-operatively (p?0.001). The mean follow-up duration was 3.9±5.6 months (1 week to 24 months). The most common post-operative complication was corneal edema. Conclusion: The stress created by cataract surgery on the physician and patient is quite high in monocular cases. However, satisfactory results with PE are obtained in these cases by carefully using pre-, intra- and post-operative methods.Öğe Pre-, intra- and post-operative management in phacoemulsification surgery for completely monocular cases(2019) Demirel, Soner; Dikci, Seyhan; Firat, Penpe Gul; Ozturk, Emrah; Ceylan, Osman Melih; Turkoglu, Elif Betul; Yilmaz, Turgut; Gunduz, Abuzer; Gozukara Bag, Harika GozdeAim: To evaluate the results of phacoemulsification (PE) surgery in completely monocular cases and to emphasize the important points in the pre-, intra- and post-operative periods. Material and Methods: A total of 42 patients who had no light perception in one eye and had underwent PE surgery in the other eye at our clinic between January 2014 and March 2016 were included in the study. The charts of the patients were evaluated retrospectively. The age and gender of the cases, whether there was an additional pathology in the eye undergoing surgery, the reason of visual loss in the other eye, the type of anesthesia used, pre- and post-operative best corrected visual acuity (BCVA) with the Snellen chart, intraocular pressure and intra- and post-operative complications were investigated. Results: There were17 (40.5%) female and 25 (59.5%) male patients with a mean age of 74.2±10.5 (45-93) years. The most common causes of the monocular state were glaucoma, cataract and trauma, the most common accompanying pathologies in the eyes undergoing cataract surgery were glaucoma, zonular weakness and age-related macular degeneration. Mean BCVA was 0.07±0.1 (0.01-0.4) pre-operatively and 0.5±0.3 (0.01-1) post-operatively (p≤0.001). The mean follow-up duration was 3.9±5.6 months (1 week to 24 months). The most common post-operative complication was corneal edema. Conclusion: The stress created by cataract surgery on the physician and patient is quite high in monocular cases. However, satisfactory results with PE are obtained in these cases by carefully using pre-, intra- and post-operative methods.Öğe Which dose of bevacizumab is more effective for the treatment of aggressive posterior retinopathy of prematurity: lower or higher dose?(Consel brasıl oftalmologıa, alameda santos 1343, 11 andar cj 1110, cerqueıra cesar, sao paulo, sp 00000, brazıl, 2018) Dikci, Seyhan; Ceylan, Osman Melih; Demirel, Soner; Yılmaz, TurgutPurpose: To compare 0.5 mg and 0.625 mg of bevacizumab for treating aggressive posterior retinopathy of prematurity (AP-ROP). Methods: The medical records of patients with AP-ROP who were administered intravitreal bevacizumab (IVB) as a primary treatment at a university clinic were evaluated retrospectively. Five eyes of three patients (Group 1) who received 0.625 mg/0.025 ml IVB and 10 eyes of another five patients (Group 2) who received 0.5 mg/0.02 ml IVB were evaluated. Laser photocoagulation was used as additional treatment after relapses. Anatomic results and complications were evaluated in both groups. Results: We evaluated 15 eyes of eight patients (four girls and four boys) with a flat demarcation line at posterior zone 2 and plus disease or stage-3 disease in this study. The mean gestational age of the three babies in Group 1 was 26 +/- 1 weeks and the mean birth weight was 835.33 +/- 48.01 g. The corresponding values were 25.2 +/- 1.6 weeks and 724 +/- 139.03 g, respectively, for the five babies in Group 2. Retinal vascularization was completed at a mean postmenstrual duration of 53.6 +/- 1.5 weeks without additional treatment in the five eyes in Group 1. Laser photocoagulation for relapse was administered to five of the 10 eyes in Group 2. Retinal vascularization was completed at a mean postmenstrual duration of 47.6 +/- 1.5 weeks in the remaining five eyes. None of the patients developed complications such as cataract, glaucoma, retinal tear, retinal or vitreous hemorrhage, or retinal detachment. Conclusion: Although lower IVB doses in the treatment of AP-ROP are expected to be safer in terms of local and systemic side effects in premature infants, these patients may require additional treatment with IVB or laser photocoagulation.Öğe Which dose of bevacizumab is more effective for the treatment of aggressive posterior retinopathy of prematurity: lower or higher dose?(Consel Brasil Oftalmologia, 2018) Dikci, Seyhan; Ceylan, Osman Melih; Demirel, Soner; Yilmaz, TurgutPurpose: To compare 0.5 mg and 0.625 mg of bevacizumab for treating aggressive posterior retinopathy of prematurity (AP-ROP). Methods: The medical records of patients with AP-ROP who were administered intravitreal bevacizumab (IVB) as a primary treatment at a university clinic were evaluated retrospectively. Five eyes of three patients (Group 1) who received 0.625 mg/0.025 ml IVB and 10 eyes of another five patients (Group 2) who received 0.5 mg/0.02 ml IVB were evaluated. Laser photocoagulation was used as additional treatment after relapses. Anatomic results and complications were evaluated in both groups. Results: We evaluated 15 eyes of eight patients (four girls and four boys) with a flat demarcation line at posterior zone 2 and plus disease or stage-3 disease in this study. The mean gestational age of the three babies in Group 1 was 26 +/- 1 weeks and the mean birth weight was 835.33 +/- 48.01 g. The corresponding values were 25.2 +/- 1.6 weeks and 724 +/- 139.03 g, respectively, for the five babies in Group 2. Retinal vascularization was completed at a mean postmenstrual duration of 53.6 +/- 1.5 weeks without additional treatment in the five eyes in Group 1. Laser photocoagulation for relapse was administered to five of the 10 eyes in Group 2. Retinal vascularization was completed at a mean postmenstrual duration of 47.6 +/- 1.5 weeks in the remaining five eyes. None of the patients developed complications such as cataract, glaucoma, retinal tear, retinal or vitreous hemorrhage, or retinal detachment. Conclusion: Although lower IVB doses in the treatment of AP-ROP are expected to be safer in terms of local and systemic side effects in premature infants, these patients may require additional treatment with IVB or laser photocoagulation.
