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    Öğe
    Göz Küresinin Etmoid Sinüse Travmatik Dislokasyonu
    (2021) Onaran, Zafer; Şimşek, Gökce; Konuk, Onur
    Travmaya bağlı göz küresinin paranazal sinüslere dislokasyonu nadir bir durumdur. Göz küresinin bütünlüğünü koruyarak yer\rdeğiştirmesi hızlı ve uygun müdahale edildiği taktirde fonksiyonel ve kozmetik düzelme sağlanabilecek bir rahatsızlıktır. Bu yazıda 36\ryaşında düşme neticesinde görme kaybı şikayetiyle acil servise başvuran hastada saptanan göz küresinin etmoid sinüse dislokasyonu ve\rtedavi süreci tartışılmıştır.
  • Küçük Resim
    Öğe
    Intraocular pressure and superior ophthalmic vein blood flow velocity in Graves' orbitopathy: relation with the clinical features
    (Springer, 2009) Konuk, Onur; Onaran, Zafer; Oktar, Suna Özhan; Yücel, Cem; Ünal, Mehmet
    The aim of this study is to evaluate the association of intraocular pressure (IOP) and superior ophthalmic vein blood flow velocity (SOV-BFV) with the clinical features of Graves' orbitopathy. During the 2002-2007 period, 66 eyes of 34 Graves' orbitopathy cases were classified as mild, moderate and severe orbital disease, and evaluated according to their clinical features as: i)type 1 vs type 2 cases, and ii) cases with or without dysthyroid optic neuropathy. In all patients, a full ophthalmic examination including IOP and Hertel measurements was performed. SOV-BFV was analyzed with color Doppler sonography. The Hertel value, IOP in primary and upgaze position were higher, and SOV-BFV was lower in moderate and severe Graves' orbitopathy cases that showed statistical significance from mild cases, and controls (p = 0.001). Moderate and severe Graves' orbitopathy cases showed comparable Hertel measures and IOP in primary and upgaze position (p = 0.39); however, SOV-BFV was significantly lower in severe cases when compared to moderate cases (p = 0.001).This study demonstrated statistically significant negative correlation between IOP in both primary (r = 0.43,p = 0.008) and upgaze position (r = 0.51,p = 0.002), and SOV-BFV. Additionally, statistically significant positive correlation was detected between Hertel values and SOV-BFV(r = 0.402,p = 0.007).There was a statistical difference between type 1 and 2 cases in Hertel values(p = 0.006), IOP in upgaze position (p = 0.026) and SOV-BFV (p = 0.003). SOV-BFV of the eyes showing dysthyroid optic neuropathy was statistically lower than eyes without dysthyroid optic neuropathy (p = 0.006). IOP and SOV-BFV have significant association with the clinical features of Graves' orbitopathy. The decrease in SOV-BFV increases the severity of Graves' orbitopathy, and may have a role in the clinical course of dysthyroid optic neuropathy.
  • Küçük Resim
    Öğe
    Intraocular Pressure Lowering Effect of Orbital Decompression is Related to Increased Venous Outflow in Graves Orbitopathy
    (Informa Healthcare, 2014) Onaran, Zafer; Konuk, Onur; Oktar, Suna Ozhan; Yucel, Cem; Unal, Mehmet
    Purpose: To investigate the effects of combined orbital bone and fat decompression on intraocular pressure (IOP) and superior ophthalmic vein blood flow velocity (SOV-BFV), and their association with the clinical features of Graves orbitopathy (GO). Methods: During the 2002-2008 period, 72 eyes of 36 GO cases demonstrating moderate to severe orbitopathy were evaluated according to their clinical features as: cases with or without dysthyroid optic neuropathy (DON), and underwent orbital decompression. A control group comprised 40 eyes of 20 healthy subjects. In both groups, a full ophthalmic examination including IOP and Hertel measurements was performed, and SOV-BFV was analyzed with color Doppler imaging. Examinations were repeated after orbital decompression in GO patients. Results: All the cases demonstrated clinical features of inactive disease. Among the patients 24 of 72 eyes (33.3%) showed clinical features of DON. After surgery, the mean decrease in Hertel values was 6.2 +/- 1.8mm (p = 0.001). The mean decrease in IOP was 3.0 +/- 1.7mmHg (from 17.3 +/- 2.7 to 14.3 +/- 2.0mmHg) after orbital decompression where the post-operative values were comparable with the control group (12.9 +/- 1.4mmHg, p = 0.36). The mean increase in SOV-BFV achieved with decompression was 1.2 +/- 0.6 cm/s (from 4.8 +/- 1.7 to 6.0 +/- 1.8 cm/s) and post-operative SOV-BFV values were also comparable with the control group (6.6 +/- 1.3 cm/s, p = 0.26). The increase in SOV-BFV in cases with DON did not differ from cases without DON (p = 0.32), however, post-operative SOV-BFV of cases with DON was stil lower than cases without DON (p = 0.035). Conclusions: Combined orbital bone and fat decompression significantly reduced the IOP levels and increased the SOV-BFV in GO. This could be the confirmative finding of prediction that elevated IOP in GO is associated with increased episcleral venous pressure. The post-operative changes in IOP and SOV-BFV show differences regarding the clinical features of disease.
  • [ X ]
    Öğe
    Traumatic Dislocation of the Globe into the Ethmoid Sinus
    (Turkish Ophthalmological Soc, 2021) Onaran, Zafer; Simsek, Gokce; Konuk, Onur
    Traumatic globe dislocation into the paranasal sinuses is a rare condition. Globe displacement with preserved integrity can result in functional and cosmetic recovery with rapid and appropriate intervention. In this article, we discuss the presentation and treatment of globe dislocation into the ethmoid sinus in a 36-year-old patient who presented to the emergency department with the complaint of vision loss due to a fall.