Neuroanatomy, Visual Pathway - StatPearls - NCBI Bookshelf
Dec 19, 2022 · Several separate and parallel pathways code its processing at multiple sites in the nervous system. Disruption in these pathways and their clinical manifestations offers crucial diagnostics for an underlying disease. [1] The visual system consists of 2 primary parallel pathways: optic and pupillary reflex pathways. [2] [3] Optic Pathway.
The visual pathway: Anatomy, components and histology - Kenhub
Jul 27, 2023 · The visual pathway refers to the anatomical structures responsible for the conversion of light energy into electrical action potentials that can be interpreted by the brain. It begins at the retina and terminates at the primary visual cortex (with several intercortical tracts).
Disorders of the anterior visual pathways | Journal of Neurology ...
Metamorphopsia and micropsia (distortion and minification of the visual image) most commonly indicate retinal disease, respectively caused by retinal distortion and separation of photoreceptors by oedema. (Particularly photopsia but also metamorphopsia can occur in posterior visual pathway disease.)
Neuroanatomy, Optic Tract - StatPearls - NCBI Bookshelf
Jul 24, 2023 · The visual pathway refers to the series of cells and synapses that transmit visual signals from the environment to the brain for processing. This pathway begins with light striking the specialized nerve cells of the retina, which convert photons of …
Neuroanatomy, Pupillary Light Reflexes and Pathway
Aug 8, 2023 · The cornea is the first anterior part of the eye that refracts light and helps transfer neural signals to the brain via the visual pathway. While the air-cornea interface is responsible for approximately 65% of the total refractive power of the eye, the corneal power has a fixed focus.
To reach the retina, light must pass through the ocular media, consist-ing of the tear film, cornea, anterior chamber, lens, and the posterior-chamber vitreous (Fig. 1.1). The corneal epi-thelium and stroma are transparent to permit passage of light without distortion (Maurice, 1970).
Visual Pathway - an overview | ScienceDirect Topics
The anterior perforated substance is an important lateral relation. The anterior communicating artery passes between the two anterior cerebral arteries, and lies above the chiasma. The partial crossing of optic nerve fibres in the optic chiasma is an essential requirement for binocular vision.
The Visual Pathway—Functional Anatomy and Pathology
Oct 1, 2014 · Monocular deficits should concentrate the search to the anterior (prechiasmatic) visual pathway. Bitemporal hemianopia suggests a chiasmatic cause, whereas retrochiasmatic lesions characteristically cause homonymous hemianopic defects.
Chapter 3 - Anatomy of the anterior visual pathway
Anatomy of the anterior visual pathway; By Devin D. Mackay, Steven L. Galetta, Sashank Prasad; Edited by Peter A. Calabresi, Laura J. Balcer, Elliot M. Frohman; Book: Optical Coherence Tomography in Neurologic Diseases; Online publication: 05 May 2015; Chapter DOI: https://doi.org/10.1017/CBO9781139649506.004
Decoding Visual Pathway Lesions - American Academy of Ophthalmology
Sep 1, 2023 · Lesions can affect any portion of the visual pathway, and they may have a characteristic presentation. A complete ophthalmic exam, with emphasis on disc appearance, visual field defects, and pattern of nerve fiber loss on OCT helps in localizing the lesion.