3 optic nerve head pits

... Journal of Medical Case Reports 2008, 2:182 Figure nerve Photo exophytic haemangioblastoma adjacent to the right optic Fundalhead – Two years after presentation showing an Fundal Photo ... years after presentation showing an exophytic haemangioblastoma adjacent to the right optic nerve head burns Treatment was carried out on five occasions at 3month intervals resulting in a gradual ... either tumour size or exudation in this patient with a capillary haemangioblastoma of the optic nerve head Two previously documented cases treated with the systemic VEGF inhibitor SU5416 have reported...

Ngày tải lên: 11/08/2014, 23:21

... ……………………………….63 4.1.2 The Optic Nerve Head cupping in Highly Myopic Patients with Early Open Angle Glaucoma……………….……………………………………………………………………….68 4.2 How Does Optic Nerve Head Tilt in Highly Myopic ... Disc area.…………………………………………………………………………….77 Figure 4.4 Optic nerve head in without highly myopic eye………………………………… 78 Figure 4.5 Optic nerve head in highly myopic eye………….…………………………………78 Figure 4.6 ... study for following purposes: • To investigate the morphology of optic nerve head in high myope • To investigate how optic nerve head tilt in highly myopic eyes influences the HRT-II • To improve...

Ngày tải lên: 05/10/2015, 21:32

... lesion at the optic nerve head Increased ICP is translated along the subarachnoid space of the optic nerve sheath, which causes an increased pressure gradient across the optic nerve head This pressure ... subarachnoid space and optic nerve head through the optic canal.28 In a report by Krishna et al.,29 a young obese woman presented with headache and a left sixth nerve palsy without optic disc ... specific headache disorders, such as episodic tension headache in 30% and migraine without aura in 20% These patients with IIH often had headaches unrelated to increased ICP, and these headaches...

Ngày tải lên: 10/08/2014, 00:20

... space surrounding the optic nerves An ultrasound study of optic nerve sheath Surg Radiol Anat 1996, 18, 323-328 Hansen, H C and Helmke, K Validation of the optic nerve sheath response to changing ... M: extraocular muscle, N: optic nerve) considered normal based on complete ophthalmic and physical examinations prior to be used in the study Biometry of optic nerve sheath diameter (ONSD) All ... RUOLQHDUUHJUHVVLRQDQDO\VLVZHUHDSSOLHGWRGDWDDQDO\VLV Results Ultrasonographic measurement of optic nerve sheath diameter (ONSD) Comparison between left and right eye The mean ONSD value, standard...

Ngày tải lên: 07/08/2014, 17:22

... McNab AA, McDonald WI: Primary optic nerve sheath meningioma Br J Ophthalmol 1989, 73:960-6 Sibony PA, Krauss HR, Kennerdell JS, Maroon JC, Slamovits TL: Optic nerve sheath meningiomas Clinical ... Patients with Optic Nerve Sheath Meningioma Int J Radiat Oncol Biol Phys 2011 Saeed P, Blank L, Selva D, Wolbers JG, Nowak PJ, Geskus RB, et al: Primary radiotherapy in progressive optic nerve sheath ... Fractionated stereotactic radiotherapy for the treatment of optic nerve sheath meningiomas: preliminary observations of 33 optic nerves in 30 patients with historical comparison to observation...

Ngày tải lên: 09/08/2014, 09:21

... hypoperfusion of the optic nerve head These endogenous vasoactive agents, such as endothelin-1 and calcium ions, have been shown to cause hypoperfusion in the optic nerve head, as measured by laser ... regions of the optic nerve head to reduce constriction of underperfused nerve fibers This scleral outlet compartment syndrome is thought to lead to necrosis of edematous nerve fibers.61 In a report ... repetitive prolonged apneas may impair optic nerve head blood flow autoregulation.134 Impairment of vascular 42 autoregulation in the optic nerve head may be a result of sleep apnea-related arterial...

Ngày tải lên: 10/08/2014, 00:20

... infiltration or other inflammatory infiltration of the optic nerve, 16 metastases to the optic nerve, 17 malignant optic nerve glioma of adulthood, optic nerve glioma in childhood, orbital schwannoma, cavernous ... high-resolution CT, an optic nerve glioma appears as a well-demarcated fusiform enlargement of the optic nerve1 93 and increased tortuosity of the nerve, representing elongation of the optic nerve from secondary ... blood supply to the nerve They constitute 1% to 2% of all meningiomas and account for one-third of all primary optic nerve tumors They are also the second most common optic nerve tumor after glioma.1...

Ngày tải lên: 10/08/2014, 00:20

... the optic nerve head comes from choroidal branches of the posterior ciliary arteries that extend to the optic nerve head. 10 The central retinal vein drains most of the optic nerve head During ... affect the optic nerve In a retrospective study of 13 patients with toxoplasmosis affecting the optic nerve head, 308 patients with primary toxoplasmic involvement of the optic nerve head who were ... Optic Nerve Meningeal metastasis can infiltrate the optic nerve to cause visual loss.241 Malignant cells invade the subarachnoid space of the optic nerve with minimal invasion of the optic nerve...

Ngày tải lên: 10/08/2014, 00:20

... unmyelinated, prelaminar portion of the optic nerve, including the retinal nerve fiber layer and the portion of the nerve crossing the lamina cribrosa at the optic nerve head, has a high number of mitochondria, ... enhancement of the optic nerves and chiasmal enlargement on MRI.13 MRI of the orbits in some patients can also show increased T2 signal in the affected optic nerve. 14 The optic nerve is affected in ... astrocytes expressing NOS-2 can cause retinal ganglion cell damage in LHON optic nerve heads.74 Neuronal regeneration after optic nerve damage may be promising, but it is limited by inhibitory factors...

Ngày tải lên: 10/08/2014, 00:20

... JS, et al Effect of optic nerve head drusen on nerve fiber layer thickness Ophthalmology 1998;105:878–85 Roh S, Noecker RJ, Schuman JS Evaluation of coexistent optic nerve head drusen and glaucoma ... show a lacy pattern of cavitation in the anterior portion of the optic nerve head. 19 Myelinated nerve fibers appear as thickened nerve fiber layer on OCT in affected areas of the retina.19 In superior ... optic nerve- retinal junction where subretinal fluid may accumulate in disorders such as optic nerve pits with subretinal fluid and central serous chorioretinopathy Although the prelaminar optic nerve...

Ngày tải lên: 10/08/2014, 00:20

... tumors of retina, 223–227 Optic nerve anatomy of, 130–132 intracanalicular optic nerve, 132 intracranial optic nerve, 132 optic nerve head, 130–131 orbital optic nerve, 131–132 avulsion of, 133 ... Bearse MA Jr The optic nerve head component of the human ERG Vision Res 1999;39(3):419–36 Hood DC, Bearse MA Jr, Sutter EE, Viswanathan S, Frishman LJ The optic nerve head component of the monkey’s ... generated at the optic nerve head that appears to reflect local ganglion cell activity Sutter and Bearse23 first identified this component in the human mfERG and called it the optic nerve head component...

Ngày tải lên: 10/08/2014, 00:20

... nerve, and a physical impact to the head which hit against the window of the vehicle Similar but more dramatic scenarios have been described indicating that refractory evulsion of the optic nerve, ... optic nerve diameter in patients who have experienced head trauma that could Page of (page number not for citation purposes) Journal of Medical Case Reports 2008, 2:50 involve the optic nerve ... The role of early reduction ArchOtolaryngol HeadNeck Surg 1987, 113(1):81-83 Anderson Rl, Panje WR, Gross CE: Optic nerve blindness following blunt forehead trauma Ophthalmology 1982, 89:445-455...

Ngày tải lên: 11/08/2014, 10:23

... transmission of the raised intracranial pressure to the optic nerve head This is important to bear in mind when examining children with optic nerve hypoplasia Competing interests The author(s) declare ... nerve hypoplasia British Journal of Ophthalmology 1978, 62:7-15 Massey EW, Schoenberg B: Foster Kennedy Syndrome Archives of Neurology 1984, 41:658-659 Watnick RL, Trobe JD: Bilateral optic nerve ... optic disc in the left Fundal photograph showing a hypoplastic optic disc in the left eye optic nerve on one side with papilloedema contralaterally [2] In the absence of an intracranial mass these...

Ngày tải lên: 11/08/2014, 23:21

... and around the optic nerve complex, and hydrops from extrinsic tumour [38] Additionally, orbital fractures and optic nerve injury may occur in up to 10% of patients with head trauma [39] The ... the optic nerve and on the ONSD remains unclear [21] • The optic nerve sheath has a baseline diameter that remains constant as long as ICP is maintained within normal limits • Optic nerve sonography ... care unit (ICU), all patients who had suffered head trauma underwent clinical evaluation (Glasgow Coma Scale [GCS]) by neurosurgeons, and consequently head CT scans were performed to evaluate possible...

Ngày tải lên: 13/08/2014, 11:22

... to optic nerve dilatation (as during optic nerve oedema) but also, and predominantly, to its optic nerve sheath distension, probably caused by increased CSF pressure around the optic nerve In ... pressure; OND, optic nerve diameter; ONSD, optic nerve sheath diameter; ROC, receiver operating characteristic OND) is strongly related to ICP, a finding that reflects distension of the nerve sheath ... = 0.0003) Because optic Table Inter-observer variability for optic nerve (and sheath) diameters Optic nerve diameter Optic nerve sheath diameter Mean standard deviation (mm) 0.25 0.17 Mean difference...

Ngày tải lên: 13/08/2014, 11:22

... optic nerve sheath to detect raised intracranial pressure Crit Care 2008, 12:R114 Hansen HC, Helmke K: The subarachnoid space surrounding the optic nerves An ultrasound study of the optic nerve ... of the optic nerve in benign intracranial hypertension Neuroradiology 1996, 38:769-773 Watanabe A, Horikoshi T, Uchida M, Ishigame K, Kinouchi H: Decreased diameter of the optic nerve sheath ... intracranial pressure on the diameter of the optic nerve sheath J Neurosurg 2008, 109:255-258 Hansen HC, Helmke K: Validation of the optic nerve sheath response to changing cerebrospinal fluid...

Ngày tải lên: 13/08/2014, 11:22

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