Browsing by Author "Ulusoy, MO"

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    Anatomical determination of a safe entry point for occipital condyle screw using three-dimensional landmarks
    Ozer, MA; Celik, S; Govsa, F; Ulusoy, MO
    The occipital condyle (OC) is an important area in craniovertebral surgery, but neither its anatomical features nor the procedures concerning the OC have been detailed yet. The morphological analysis of the structures were made in totally 704 sides of the occipital bones of adult skulls by 3D-Doctor Demo version. The length and width of the OC were found to be 23.9 +/- A 3.4 (right), 24 +/- A 3.3 (left) and 11.9 +/- A 2.3 (right), 10.7 +/- A 2.3 mm (left), respectively. The mean anterior intercondylar distance and the posterior intercondylar distance were measured as 20.9 +/- A 3.6 and 43.1 +/- A 4 mm, respectively. The sagittal intercondylar angle was observed as 68.7 +/- A 10.6A(0). The sagittal condylar angle was observed to be 32.9 +/- A 7.6A(0) and 38.2 +/- A 7.3A(0) in the right and left, respectively. The head circumference was observed to be 65.6 +/- A 7.8 and 64.4 +/- A 7.2 mm in the right and left, respectively. The head area was measured as 231.9 +/- A 53.3 and 214.9 +/- A 45.1 mmA(2) in the right and left, respectively. The most common type was oval-like (59.67%), whereas the most unusual one was two-portioned condyle (0.32%). In Pearson correlation analysis, it was significant that a statistically strong relation was noticed between the length and area, and the circumference and area. The findings suggest that the oval type was more successful to work with, while the triangular, circular and two-portioned types were highly risky for the fixation resonance as the surface got quite smaller. As a result, we suggest that by resecting nearly half of the OC, the border of the hypoglossal canal can be involved.
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    Ciliary body cysts in neurofibromatosis: A new coexistence?
    Emre, S; Palamar, M; Ulusoy, MO; Gençoglan, G
    Neurofibromatosis 1 (NF1) is an autosomal dominant, multisystem disorder that also effects the eye. Herein, we aimed to investigate the posterior iris surface and ciliary body morphology of NF1 patients by ultrasonic biomicroscopy (UB). Nine consecutive unrelated subjects with NF1, and as a control group 25 healthy subjects, were included in the study. All patients underwent ophthalmic examination including visual acuity testing, slit-lamp biomicroscopy, tonometry, gonioscopy (Schaffer classification), and dilated ophthalmoscopy, UB. Mean age was 35.1 +/- 16.2 (range, 11-57) and 34.5 +/- 15.6 (range, 9-60) for NF1 and control groups respectively ( > 0.05). Lisch nodules were present in 16 of 18 eyes (88.8%) in NF1 group. Fundoscopic examination of the control group and 15 eyes of NF1 (83.3%) patients was normal, whereas hypoplastic and tilted optic nerve were present in three eyes, and temporally-located bone-spicule-like lesions was present in one eye of the NF1 group. UB revealed ciliary body cyst in 77.7% (14/18) of the eyes among NF1 group, and 8% (4/50) among control group ( < 0.05). The mean size of the cysts were 520 +/- 191 mu (range, 220-860 mu) and 495 +/- 231 mu (range, 300-830 mu) at NF1 and control groups, respectively. Gonioscopic evaluation revealed that 55% of the NF1 patients have an unoccludable anterior chamber angle (Grade 3 or 4), 45% occludable angle (Grade 1 or 2), and 78% irregular pigment patches. However, occludable angle rate was just 4% in the control group, and none of the patients had irregular pigment patches. The coexistence of ciliary body cysts and NF1, and the effect of these cysts in the eye should be enlightened with further studies.
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    Safety and efficacy of panretinal photocoagulation in patients with high-risk proliferative diabetic retinopathy using pattern scan laser versus conventional YAG laser
    Seymenoglu, RG; Ulusoy, MO; Baser, EF
    The purpose of the study was to compare the results of panretinal photocoagulation (PRP) using the pattern scan laser (PASCAL) in a single setting versus multiple sessions of standard YAG laser in patients with proliferative diabetic retinopathy. Charts of 35 eyes that were treated with the PASCAL and an equal number of eyes that were treated with conventional laser were retrospectively reviewed. The whole PRP treatment was performed in one session in the PASCAL group, whereas all the patients in the conventional-laser group completed the entire PRP treatment in two or three sessions. Persistence and/or recurrence of neovascularization, complications encountered, total number of laser spots, and mean power used were compared. Patients treated with the PASCAL received significantly higher number of laser spots than those treated with conventional laser (2885 vs. 1642, p < 0.001). The PASCAL and conventional-laser systems required an average power of 650 mW and 330 mW, respectively (p < 0.001). Patients treated with the PASCAL showed similar rates of treatment failure within 12 months of follow-up compared with patients treated with conventional laser (14% vs. 11%, p > 0.05). In the PASCAL group, vitreous hemorrhage, neovascular glaucoma, retinal hemorrhage, and choroidal detachment were reported in two, two, one, and two patients, respectively, whereas only one each vitreous hemorrhage and neovascular glaucoma were encountered in the conventional-laser group. Our study reports that single-session PRP with the PASCAL has similar efficacy compared with conventional laser, and has a favorable side-effect profile. Copyright (C) 2015, Kaohsiung Medical University. Published by Elsevier Taiwan LLC.
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    Comparison of Diagnostic Accuracy of MRA and GPS Algorithms Using HR III Device in Glaucoma Patients
    Ulusoy, MO; Baser, EF; Seymenoglu, RG; Kayikçioglu, RO
    Objectives: The aim of this study is to evaluate the diagnostic accuracy of Moorfields regression analysis (MRA) and glaucoma probability score (GPS) and to measure the agreement between these two programs in classifying eyes as normal or abnormal. Materials and Methods: The study included 150 glaucoma patients followed in our glaucoma unit and 120 control subjects without glaucoma. All subjects underwent total ophthalmological examination, standard achromatic perimetry, and imaging of the optic nerve head with the Heidelberg Retina Tomograph II (HRT), using HRT III software, Version 3.0. The HRT parameters were compared between the two groups. The diagnostic accuracies of the two classifications were measured when the borderline was taken as either normal (highest specificity criteria) or abnormal (highest sensitivity criteria). The agreement between them was calculated using the kappa (kappa) coefficient. Results: All HRT parameters except height variation contour in our study showed statistically differences between the control and glaucoma groups (p=0.000). The parameters with the highest area under curves were GPS global score (0.817), vertical cup/disc ratio (0.816), cup/disc area (0.808), and cup area (0.783). According to the highest specificity criteria, MRA had a sensitivity of 66% and specificity of 89.1% and GPS had a sensitivity of 62.7% and specificity of 81.6%. According to the highest sensitivity criteria, MRA had a sensitivity of 85.3% and specificity of 68.3% and GPS had a sensitivity of 90% and specificity of 60.8%. A moderate agreement of 65.9% (178 eyes) with a. coefficient of 0.47 was found between MRA and GPS. Conclusion: In conclusion, GPS and MRA had a similar sensitivity, but the specificity of MRA was found to be higher than that of GPS. A moderate agreement was found between these analysis programs.
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    Post-thyroidectomy iatrogenic Horner's syndrome with heterochromia
    Ulusoy, MO; Kivanç, SA; Atakan, M; Mayali, H
    Purpose: To present a case of iatrogenic Horner's syndrome seen together with the heterochromia in the post-thyroidectomy period. Methods: A 23-year-old female patient was admitted to our clinic with complaints of low vision in the eye and difference in eye color that developed over the past two years. In the left eye, myosis and minimal ptosis (similar to 1 mm) was detected, and the color of the iris was lighter than the right eye. Results: The pre-diagnosis of left iatrogenic Horner's syndrome was finalized after 0.5% topical apraclonidine test. Conclusion: Heterochromia can be observed in iatrogenic Horner's syndrome. Copyright (c) 2016, Iranian Society of Ophthalmology. Production and hosting by Elsevier B.V.