WebJan 26, 2024 · This is the second case report of RION in a patient with a history of brain radiotherapy and concurrent chemotherapy with pemetrexed. History of chiasmal compression, concurrent use of chemotherapeutic agents, and high fraction size (despite the safety of total radiation dose) were possible contributing risk factors to develop RION … WebBackground: The relationship between the optic apparatus and the skull base is important during approaches near the sella turcica. One relationship that dictates which approach is taken is whether the optic chiasm is prefixed or postfixed or in a "normal" location, (centered over the diaphragma sella).
Chiasma opticum – Wikipedia
WebFeb 19, 2024 · stage 1: optic nerves only stage 2: chiasm involved (with or without optic nerve involvement) stage 3: hypothalamic involvement and/or other adjacent structures A more recent modification of the Dodge … WebMar 13, 2024 · Chiasmal disorders classically present with gradual onset of vision loss, bitemporal hemianopsia, and occasionally, endocrinopathy if the pituitary gland and/or … convert 12.7 psia to inches of hg
The Optic Chiasm and How It Affects Vision - Verywell Health
WebMay 25, 2024 · To biologists, the optic chiasm is thought to be a turning point in evolution. 1 It is thought that the crossing and uncrossing optic nerve fibers that travel through the … WebMar 31, 2024 · Anatomy. The optic nerve is mainly made up of the axons (nerve fibers) of the retinal ganglion cells from the retina. The optic disc or nerve head is the point where the axons from the retinal ganglion cells leave the eye. The nerve head appears as a white circular structure in the back of the eye. There are no photoreceptors on this structure. WebMay 7, 2024 · National Center for Biotechnology Information fallout 76 cant walk