Browsing by Author "Olcaysu, Osman Okan"

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Acquired capillary hemangioma of the eyelid in a 49-year-old woman from Turkey
(Wolters Kluwer Medknow Publications, 2014-09) Olcaysu, Osman Okan; Gelincik, İbrahim; Kıvanç, Sertaç Argun; Uludağ Üniversitesi/Tıp Fakültesi/Oftalmol Anabilim Dalı.; AAH-6518-2021; 47861204900
A 49-year-old woman developed a dark brown nodular mass in the lower eyelid. The lesion had grown fast for 2 months and then had remained stable in size. Excisional biopsy was performed. Histopathological examination of an excisional biopsy specimen pointed to proliferative vessels lined by increased endothelial cells without nuclear atypism. The nodular mass evaluated as a capillary hemangioma.
Are diabetic patients aware of the danger in Turkey?
(Carbone Editore, 2016-06-02) Ulusoy, Mahmut Oğuz; Atakan, Mehmet; Uzun, Özgür; Şahin, Bilge Öztürk; Olcaysu, Osman Okan; Karatepe, Arzu Seyhan; Zorlu, Sibel Özturk; Türker, İbrahim; Kıvanç, Sertaç Argun; Uludağ Üniversitesi/Tıp Fakültesi/Göz Hastalıkları Anabilim Dalı.; 0000-0002-0932-6977; AAH-6518-2021; 47861204900
Purpose: The aim of this study is to assess the awareness of the diabetic retinopathy and the level of the diabetic retinopathy in the diabetic patients, which consulted to the state hospitals in Turkey. Methods: A total of 1071 patients, admitted to 8 different state hospitals' ophthalmology clinics around the country, were included to this cross sectional multicentred study. All diabetic patients were asked to respond specifically prepared questionnaire including diabetic retinopathy and diabetes mellitus and underwent fundus examination to assess the diabetic retinopathy level. Results: The mean age of the study population was 57.5 years and the 57.4 % of the patients were women. 34.7% of the patients' were responded "NO" to the question of "Are you aware of the eye complications of diabetes mellitus?". The study also showed that 200 of 699 patients (28.6%) who aware of the diabetic retinopathy, despite having this information do not have regular eye examination for the diabetic retinopathy. It was seen that even 40.62% (26/64) of the college graduates don't go regular checks. The majority of the aware patients (40.5 %) pointed out that they took information from internal medicine or endocrinologists and the 28.1% of the patients were informed from elsewhere (family, neighbor, TV, etc.). Conclusion: One third of the subjects monitored were not aware of diabetic retinopathy. It is noteworthy to emphasize the importance of the routine eye examination for preventing vision loss, regardless of the educational level. The warning of the physicians through written and visual media is thought to be effective in preventing irreversible condition of this disease.
Association of birth parameters with corneal thickness in prematurely born and full-term school-aged children
(Lippincott Williams & Wilkins, 2016-01-05) Olcaysu, Osman Okan; Kıvanç, Sertaç Argün; Budak, Berna Akova; Uludağ Üniversitesi/Tıp Fakültesi/Göz Hastalıkları Anabilim Dalı.; 0000-0003-0995-5260; 0000-0002-0932-6977; AAH-6518-2021; ABE-3033-2020; 47861204900; 57188831894
Purpose:The objective of this study was to investigate and compare corneal thicknesses of prematurely born and full-term early school-aged children, who were grouped into birth weight categories according to gestational age.Methods:This cross-sectional study included 136 school-aged white children. They were grouped as premature (born before 37 weeks of gestation) and full term (born at or after 37 weeks of gestation). These 2 groups were further divided into birth weight groups according to gestational age as small, appropriate, and large for gestational age. Central corneal thickness (CCT) was measured by ultrasound pachymetry. The intraocular pressures of both groups were measured by a Goldmann applanation tonometer.Results:The study included right eyes of 136 children. There were 53 girls and 83 boys whose mean age was 6.5 0.9 years (range: 5-8 yrs). Mean pachymetry of the small for gestational age group (526.8 +/- 37.9 m) in prematurely born children was significantly lower than that of appropriate for gestational age (554.6 +/- 34.2 m) (P = 0.039, mean difference 27.8, 95% confidence interval, 1.1-54.5). When prematurely born and full-term children are compared, the mean pachymetric values of the term children (574.5 +/- 37.8 m) were found to be significantly higher than those of the prematurely born children (545.4 +/- 35.6 m) (P 0.001).Conclusions:Birth parameters affect CCT in early school-aged children. Prematurely born, small for gestational age children have lesser CCT. This should be kept in mind at their follow-ups.
Association of birth parameters with refractive status in a sample of caucasian children aged 4-17 years
(Hindawi, 2015-01-01) Akova Budak, Berna; Kıvanç, Sertaç Argün; Olcaysu, Osman Okan; AKOVA, BERNA; KIVANÇ, SERTAÇ ARGUN; Uludağ Üniversitesi/Tıp Fakültesi/Göz Hastalıkları Anabilim Dalı; 0000-0003-0995-5260; ABE-3033-2020; AAH-6518-2021
Purpose. To investigate the association of birth parameters with refractive status in different age groups of Caucasian children. Materials and Methods. This cross-sectional study included 564 eyes of 282 children aged 4 to 17 years. All children underwent complete ophthalmologic examination. The children were divided into three groups according to their refractive status (emmetropia, myopia, and hyperopia), ages (4-7, 8-9, 10-12, and 13-17), and appropriateness for gestational age, respectively. Results. The mean age of the children was 9.2 +/- 2.8 (age range 4-17 years). The mean spheric equivalent was +0.3 +/- 1.7 (range: (-10.0)(+10.0) diopters). The mean birth weight and gestational age were 2681.1 +/- 930.8 grams (750-5000 grams) and 37.2 +/- 3.7 weeks (25-42 weeks). According to multinominal logistic regression analysis, children with myopia were more likely to have higher birth weights than emmetropic children (OR: 1.0, 95% CI: 1.000-1.001, and P = 0.028). The hypermetropes were found to be significantly small for gestational age between 13 and 17 years of age. Conclusion. Birth weight and appropriateness for gestational age as birth parameters may have an impact on development of all types of refractive errors. The hypermetropic children tended to be small for gestational age.
Comparison of retinal nerve fiber layer thickness in terms of birth weight in prematurely born children
(Taylor & Francis, 2015-06-18) Olcaysu, Osman Okan; Olcaysu, Elif; Kıvanç, Sertaç Argün; Akova, Berna Budak; Yıldız, Meral; Uludağ Üniversitesi/Tıp Fakültesi/Göz Hastalıkları Anabilim Dalı.; 0000-0002-0932-6977; 0000-0003-0995-5260; AAH-6518-2021; ABE-3033-2020; AAH-1885-2021; 47861204900; 55370489800; 35791194600
Purpose: To study the potential effects of both prematurity and the sub-groups of low birth weight on thickness of RNFL. Methods: Prospective case series of 26 preterm school-aged children with low birth weight whose retinal nerve fiber layer analyses with RTVue-100 Fourier-domain optic coherence tomography were performed in 2013 at the Department of Ophthalmology, Erzurum Region Education and Training Hospital. Results: The mean retinal nerve fiber layer thicknesses were 100.6 +/- 13.3 microns in extremely low birth weight, 103.9 +/- 8.4 microns in very low birth weight, and 104.1 +/- 10.8 microns in low birth weight groups. There was no significant difference in RNFL among the groups. Conclusions: No significant relationship was found between birth weights and retinal nerve fiber layer thickness of preterm children who were appropriate for gestational age.
Diabetic macular edema and ocular medical treatment options
(Derman Medical Publ, 2015-04-01) Olcaysu, Osman Okan; Kıvanç, Sertaç Argün; KIVANÇ, SERTAÇ ARGUN; Budak, Berna Akova; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Göz Hastalıkları Anabilim Dalı.; 0000-0003-0995-5260; AAH-6518-2021; ABE-3033-2020
Diabetes mellitus (DM) is one of the most common endocrine diseases which causes serious morbidity. Damage occurs in many end organs in diabetic patients. Eyes are also among the end organs and DM causes morbidity related to diabetic retinopathy. It is estimated that 10 % of the diabetic patients have visual impairment and 2 % have blindness. Diabetic macular edema is the main cause for visual impairment in patients with diabetic retinopathy. Treatment of the DME gains importance with new treatment modalities in last decade. Ocular medical treatment modalities were discussed with the review of recent literature.
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
Effectiveness of pyridoxine and pyridostigmine in the treatment of vincristine-induced bilateral ptosis and external ophthalmoplegia: A case report
(Türk Oftalmoloji Derneği, 2014-08-01) Olcaysu, Osman Okan; Altun, Ahmet; Olcaysu, Elif; Kıvanc, Sertac Argün; Yıldırım, Zuhal Keskin; Olcaysu, Elif; Uludağ Üniversitesi/Tıp Fakültesi/Göz Hastalıkları Anabilim Dalı; DJR-1952-2022
In this manuscript, we present the case of a patient with acute lymphoblastic leukemia who developed vincristine-induced bilateral ptosis and external ophthalmoplegia and who was treated successfully with pyridoxine and pyridostigmine. Pyridostigmine and pyridoxine are promising treatment option in cases of vincristine-induced neuropathy.
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.
Sociodemographic status of severely disabled and visually impaired elderly people in Turkey
(Consel Brasil Oftalmologia, 2015-10-20) Olcaysu, Osman Okan; Çevik, Sadık Görkem; Kıvanç, Sertaç Argun; Akova, Budak Berna; Uludağ Üniversitesi/Tıp Fakültesi/Göz Hastalıkları Anabilim Dalı.; 0000-0003-0995-5260; 0000-0002-0932-6977; ABE-3033-2020; AAH-6518-2021; 47861204900; 55370489800
Purpose: To identify the prevalence of ophthalmologic diseases in elderly patients who had been classified as severely disabled and to identify the ophthalmologic conditions leading to visual impairment and blindness. Methods: The medical records of 2806 patients who had applied to the Health Board of the Erzurum Region Training and Research Hospital between January 2011 and December 2012 were reviewed. One hundred ninety-nine patients aged >64 years who were classified as severely disabled with disability rates of over 50%, and who were unable to care for themselves or to move and/or communicate without help were included in the study. Results: The most frequently seen disabilities were neurological (47.2%) and those resulting from eye diseases (17.1%). The most common ophthalmologic diseases were cataract, glaucoma, and age-related macular degeneration. The mean right and left eye visual acuities were 1.17 +/- 1.10 logMAR and 1.13 +/- 1.0 logMAR, respectively. Of the 60 patients with ophthalmologic diseases or conditions, 33 were blind (visual acuity worse than 20/400) and 10 were visually impaired (visual acuity worse than 20/70 but better than 20/400). Cataracts were the main cause of blindness. The mean age of the patients who were still being followed up at the time of application to the disability board was significantly lower than that of the others (p=0.015). Seventy-nine percent of the blind patients were from rural areas, and 88% of these had no regular follow-up. Among the blind and visually impaired, significantly more patients from urban areas had social security insurance (SSI) than those from rural areas (p-0.043). Nearly 64% of the blind patients were women. The follow-up rate was significantly lower in women (p=0.025). According to multinomial logistic regression analysis, the visually impaired and blind patients were more likely to have lower follow-up rates than the other types of severely disabled patients (OR: 0.231, 95% CI: 0.077-0.688, p=0.009). Conclusions: Blindness gives rise to severe disability, and the most common ophthalmologic diseases that cause severe disabilities in elderly patients are cataract, glaucoma, and age-related macular degeneration. Sociodemographic factors that may affect the accessibility of visually impaired and blind people to health services include their place of residence and gender.
The newborn conjunctival flora at the post delivery 24 hours
(Wolters Kluwer Medknow Publications, 2018-12-01) Kara, Mustafa; Kıvanç, Sertaç Argun; Olcaysu, Osman Okan; Budak, Berna Akova; Özmen, Ahmet Tuncer; Kıvanç, Merih; Öz, Hatice Tuna Hormet; KIVANÇ, SERTAÇ ARGUN; Budak, Berna Akova; ÖZMEN, AHMET TUNCER; Uludağ Üniversitesi/Tıp Fakültesi/Göz Hastalıkları Anabilim Dalı.; 0000-0003-0995-5260 ; AAH-6518-2021; ABE-3033-2020; AAH-6550-2021
Purpose: The aim of this study was to investigate the aerobic conjunctival flora of neonates and the effects of delivery type on conjunctival flora development in neonates who were born with normal spontaneous vaginal delivery (SVD) or elective caesarean section (C/S) and who were not given prophylactic antibiotic eye drops after birth.Methods: This cross-sectional study included 95 healthy newborns. One day after the delivery, conjunctival samples were taken from newborns who were born with normal SVD or elective C/S, and not given prophylactic antibiotic eye drops after birth. Newborns with conjunctival hyperemia and discharge were excluded from study. Samples were plated in blood agar, EMB, and chocolate agar. These cultures were incubated at 37 degrees C for 24-48 h. Antibiotic sensitivity was evaluated using Kirby-Bauer disc diffusion method.Results: Staphylococcus aureus (S.aureus) growth was observed in 7 (70%) and coagulase negative staphylococcus (CNS) growth in 2 (20%) out of 10 eyes with bacterial growth in 9 culture positive newborns born with C/S. Two S. aureus strains were resistant to methicillin. On the other hand, CNS growth was observed in the conjunctival cultures of 17 out of 19 eyes with bacterial growth in 16 culture positive newborns born with SVD. In 2 eyes with CNS growth, there was also S. aureus growth. The positive cultures for S. aureus were significantly higher in the conjunctival cultures of neonates born with C/S compared to neonates born with SVD, where CNS growth was significantly lower (P = 0.002). All isolates were susceptible to vancomycin, teicoplanin, and gatifloxacin. Two isolates were resistant to methicillin.Conclusions: In deliveries with C/S, the newborn does not contact the vagina. This may result in changes of bacterial characteristic of the flora. Culture positivity for S. aureus was higher in C/S compared to SVD, which may be important in case neonatal conjunctivitis develops. Copyright (C) 2018, Iranian Society of Ophthalmology. Production and hosting by Elsevier B.V.