Hypothalamic and optic chiasm gliomas may be indistinguishable clinically, radiographically, and pathologically. Ten children with giant gliomas of the hypothalamus and optic pathway, all under age 2 years, had masses greater than 3 cm in diameter. Pathologically all proven cases (seven) were cytologically benign fibrillary astrocytomas. Previous authors have recognized the difficulty in distin...

PURPOSE To compare optic nerve head parameters, the thicknesses of the peripapillary retinal nerve fiber layer (pRNFL), the macular retinal nerve fiber layer (mRNFL), the ganglion cell complex (GCC), and the ganglion cell-inner plexiform layer (GCIPL) in macrodisks and normal-sized healthy disks using spectral domain optical coherence tomography. PATIENTS AND METHODS A total of 88 healthy eye...

PURPOSE High-resolution magnetic resonance imaging (MRI) can now directly demonstrate innervation to extraocular muscles and quantify optic nerve size. A quantitative MRI technique was developed to study the oculomotor nerve (CN3) and applied to congenital fibrosis of extraocular muscles (CFEOM) and congenital oculomotor palsy. METHODS The subarachnoid portions of the CN3s were imaged with a ...

The preretinal blood vessels, that is, blood vessels lying on the inner surface of the retina, were observed by SEM examination using digestion methods, TEM examination and fluorescence histochemical examination using the Falck-Hillarp method. The nerve endings on the preretinal arterioles were distributed from the optic disc to the periphery. The longest nerve terminals from the optic disc to ...

Background: An objective assessment of factors for ocular inflammation and its sequelae diagnostic possible development the in early phases uveitis are essential effective treatment endogenous uveitis. Purpose: To determine whether it is to predict optic atrophy patients with anterior using computed tomography (CT)-based nerve diameter. Material Methods: Patients underwent a routine eye examina...

Optic nerve head drusen (ONHD) is an uncommon condition, resulting from intraand extracellular mucoproteinic deposits in the optic nerve. These deposits, called “drusen bodies”, gradually enlarge and tend to calcify. Other threatening ocular conditions seem to be associated including vascular occlusions, choroidal neovascular membrane (CNVM) and retinal hemorrhages. The prevalence of the diseas...

Non-arteritic anterior ischaemic optic neuropathy (NAION) is a widespread visually disabling disease in the middleaged and elderly population. Based on clinical observations by Hayreh, Beck, Savino and others, a low cup/disc diameter ratio and a small optic disc have been described to be structural factors associated with the disease. The physiological correlation between disc size and cup/disc...

introduction: timely diagnosis and treatment of post traumatic, elevated intracranial pressure (eicp), could reduce morbidity and mortality, as well as improve patients’ outcome. this study is trying to evaluate the diagnostic accuracy of sonographic optic nerve sheath diameter (onsd) in detection of eicp. methods: sonographic onsd of patients with head trauma or cerebrovascular accident suspic...

The neuroanatomical morphology of nerve fibers is an important description for understanding the pathological aspects of nerves. Different from the traditional automatic nerve morphometry methods, a molecular hyperspectral imaging system based on an acousto-optic tunable filter (AOTF) was developed and used to identify unstained nerve histological sections. The hardware, software, and system pe...

purpose : to report two patients with spontaneous scleral perforation and bleb formation associated with marfan syndrome (mfs) which one of them also showed bilateral optic nerve dural ectasia. case reports : an 11-year-old girl was referred with progressive myopia. past medical history was negative. slit-lamp examination revealed bilateral scleral thinning and perforation with bleb formation, ...