• axons
  • The optic nerve is a central tract of many axons of ganglion cells connecting primarily to the lateral geniculate body, a visual relay station in the diencephalon (the rear of the forebrain). (wikipedia.org)
  • Their information is sent to the SCN (suprachiasmatic nuclei), not to the visual center, through the retinohypothalamic tract which is formed as melanopsin-sensitive axons exit the optic nerve. (wikipedia.org)
  • fundus
  • At 1 and 3 postoperative months, IR fundus photography showed an intensely fluorescent optic nerve disk in all cases. (arvojournals.org)
  • M. Niemeijer, M. D. Abramoff and B. V. Ginneken, "Fast detection of the optic disc and fovea in color fundus photographs", Medical Image Analysis, vol. 13, no. 6, pp. 859-870, 2009. (aece.ro)
  • tamponade
  • The application of platelet-rich plasma (PRP) on the optic disk pit (ODP) followed by gas tamponade leads to resolution of persistent or recurrent ODP-maculopathy in previously vitrectomized eyes. (lww.com)
  • occurs
  • Absence of the septum pellucidum occurs in septo-optic dysplasia, a rare developmental disorder also characterized by abnormal development of the optic disk and pituitary deficiencies. (wikipedia.org)
  • magnetic
  • Heat-assisted magnetic recording (HAMR) is a magnetic storage technology for greatly increasing the amount of data that can be stored on a magnetic device such as a hard disk drive. (wikipedia.org)
  • Traditional disk drive designs are limited in the amount of data that can be stored, because there is a minimum size for a magnetic field that is used to write data. (wikipedia.org)
  • As data is stored in smaller regions on a disk, it becomes technically impossible or impractical to create a magnetic field small yet strong enough to write to a region of that size. (wikipedia.org)
  • HAMR is a technique for overcoming this limit by temporarily heating the disk material during writing, for under 1 nanosecond, which makes it much more receptive to magnetic effects and allows writing to much smaller regions (and much higher levels of data on a disk). (wikipedia.org)
  • He received the National Medal of Technology in 1995 for the development of amorphous magnetic materials used for magneto-optic disk media, and in 2005 was elected to the National Academy of Engineering. (wikipedia.org)
  • vision
  • Symptoms of septo-optic dysplasia are highly variable and may include vision difficulties, low muscle tone, hormonal problems, seizures, intellectual problems, and jaundice at birth. (wikipedia.org)
  • cause
  • Optic nerve head edema may cause the cessation of spontaneous venous pulsations in the absence of elevated intracranial pressure. (arvojournals.org)
  • Systemic lupus erythematosus Periarteritis nodosa Eosinophilic vasculitis Hyperviscosity syndromePolycythemia HypercoagulabilityProtein C deficiency Antiphospholipid antibodiesAnticardiolipin antibodies Lupus anticoagulant Thrombocytosis Subclavian steal syndrome Malignant hypertension can cause ischemia of the optic nerve head leading to transient monocular visual loss. (wikipedia.org)
  • development
  • As of 2018, no hard disks using HAMR are currently on the market, but HAMR is in an advanced state of pre-release development and customer testing. (wikipedia.org)
  • area
  • 87 images of OCT Stratus and HRT measurements of optic disk area, rim area, cup area and cup to disk area ratio were taken. (arvojournals.org)
  • Delta optic disk area (Delta ODA) was defined as HRT - OCT disk area (agreement between the two devices). (arvojournals.org)
  • Since only two-thirds of the eye can receive light, the receptor cells do not need to cover the entire interior of the eye, and line only the area from pupil to the optic disk. (wikipedia.org)
  • central
  • Along a line through the nodal (central) point of the eye is the optic axis, which is slightly five degrees toward the nose from the visual axis (i.e., that going towards the focused point to the fovea. (wikipedia.org)
  • normal
  • Pseudopapilledema is a normal variant of the optic disk, in which the disk appears elevated, with indistinct margins and a normal vascular pattern. (wikipedia.org)
  • cells
  • These can be simplified into 4 main processing stages: photoreception, transmission to bipolar cells, transmission to ganglion cells which also contain photoreceptors, the photosensitive ganglion cells, and transmission along the optic nerve. (wikipedia.org)